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News Article | October 31, 2016
Site: en.prnasia.com

WUXI, China, Oct. 31, 2016 /PRNewswire/ -- The World IoT Expo is held from October 30th to November 1st, 2016 in Wuxi. The expo is jointly hosted by the Chinese Ministry of Industry and Information Technology, the Chinese Ministry of Science and Technology and Jiangsu Provincial People's Government. Jointly supported by the Chinese Academy of Sciences (CAS), International Telecommunication Union (ITU), Institute of Electrical and Electronics Engineers (IEEE), Global Standard 1 (GS1) and Auto-ID Labs, it is the largest and highest scale national-level exposition of the Internet of Things sector in China. The China International IoT Expo has been held annually since 2010, and has become widely known over the past six years. This October, approved by the CPC Central Committee and State Council, it was renamed as the World Internet of Things Exposition. Compared with previous years, this year's event will boast a larger scale, higher-level participants and more advanced technologies. With numerous exhibits and upgraded technologies, the event fosters a new beginning for the Internet of Things Exposition. With the theme of "Create IoT Era, Share Global Intelligence", this expo consists of various activities including the IoT Wuxi Summit, the main exhibition of IoT applications and products, the China National College Innovation Competition of IoT Applications and the 4th Meeting of the Governing Group of Wuxi National Sensor Network Innovation Demonstration Zone. The IoT Wuxi Summit invited guests from home and abroad, such as the president of the International Organization for Standardization (ISO) Zhang Xiaogang and deputy secretary-general of ITU Malcolm Johnson, to deliver keynote speeches. The speakers also includes Khalil Najafi, professor of the Electrical and Computer Engineering Division at the University of Michigan; Nadia Magnenat Thalmann, founder and head of the MIRALab Research Laboratory at the University of Geneva; Alain Crozier, head and chief executive of Microsoft Greater China Region; Wu Hequan, academician of the Chinese Academy of Engineering; Wang Jian, chief technology officer at Alibaba; Zhang Shunmao, the president of Huawei Marketing and Solutions and Liu Haitao, chairman of World Sensing Net Group (WSN Group). In addition to an IoT competition for college students and a job fair, the event also includes a press conference for releasing the construction plan for a world-class "Internet of Things town" to promote the development of Wuxi's IoT industry. The IoT Wuxi Summit has the following features: More than 3,000 guests from 23 countries and regions attended the exhibition, including 10 ministerial leaders, and 24 academicians of the Chinese Academy of Sciences and Chinese Academy of Engineering, directors of international associations, the inventor of the COMS integrated circuit and the founder of MEMS Research Center in Singapore. Participants also include senior managers from State-owned companies such as China Railway, State Grid, Sinopec, PetroChina, Aviation Industry Corporation of China. In addition, professors from MIT, University of Colorado, University of Michigan, University of Cincinnati, University of Washington, University of Geneva of Switzerland, Tsinghua University are also in attendance. Managers in charge of technology at overseas companies including IBM, Siemens, Microsoft, Bosch, GE, Nokia, NTT, SK Telecom, ARM, Kaspersky, Honeywell and Tesla Motors, as well as domestic ones, including China Mobile, China Telecom, China Unicom, Huawei, Lenovo, Inspur, Haier, Midea, Foxconn, Alibaba, Baidu, Tencent, JD.com, Qihoo 360 and Neusoft will also take part in the event. With its exhibition area expanded to 50,000 m2 from 32,000 m2, the expo accommodates 489 exhibitors who will demonstrate technology applications and practical cases to visitors with interactive displays. Companies participating in the Expo include IBM, Siemens, OMRON, ARM, Infineon Technologies, China Telecom, China Mobile, China Unicom, XCMG, China North Industries Group Corporation, Aisino Corporation, Huawei, ZTE, Alibaba, Tencent, JD.com, AsiaInfo, Hikvision and Lenovo.


News Article | October 31, 2016
Site: www.prnewswire.co.uk

WUXI, China, Oct. 31, 2016 /PRNewswire/ -- The World IoT Expo is held from October 30th to November 1st, 2016 in Wuxi. The expo is jointly hosted by the Chinese Ministry of Industry and Information Technology, the Chinese Ministry of Science and Technology and Jiangsu Provincial People's Government. Jointly supported by the Chinese Academy of Sciences (CAS), International Telecommunication Union (ITU), Institute of Electrical and Electronics Engineers (IEEE), Global Standard 1 (GS1) and Auto-ID Labs, it is the largest and highest scale national-level exposition of the Internet of Things sector in China. The China International IoT Expo has been held annually since 2010, and has become widely known over the past six years. This October, approved by the CPC Central Committee and State Council, it was renamed as the World Internet of Things Exposition. Compared with previous years, this year's event will boast a larger scale, higher-level participants and more advanced technologies. With numerous exhibits and upgraded technologies, the event fosters a new beginning for the Internet of Things Exposition. With the theme of "Create IoT Era, Share Global Intelligence", this expo consists of various activities including the IoT Wuxi Summit, the main exhibition of IoT applications and products, the China National College Innovation Competition of IoT Applications and the 4th Meeting of the Governing Group of Wuxi National Sensor Network Innovation Demonstration Zone. The IoT Wuxi Summit invited guests from home and abroad, such as the president of the International Organization for Standardization (ISO) Zhang Xiaogang and deputy secretary-general of ITU Malcolm Johnson, to deliver keynote speeches. The speakers also includes Khalil Najafi, professor of the Electrical and Computer Engineering Division at the University of Michigan; Nadia Magnenat Thalmann, founder and head of the MIRALab Research Laboratory at the University of Geneva; Alain Crozier, head and chief executive of Microsoft Greater China Region; Wu Hequan, academician of the Chinese Academy of Engineering; Wang Jian, chief technology officer at Alibaba; Zhang Shunmao, the president of Huawei Marketing and Solutions and Liu Haitao, chairman of World Sensing Net Group (WSN Group). In addition to an IoT competition for college students and a job fair, the event also includes a press conference for releasing the construction plan for a world-class "Internet of Things town" to promote the development of Wuxi's IoT industry. The IoT Wuxi Summit has the following features: More than 3,000 guests from 23 countries and regions attended the exhibition, including 10 ministerial leaders, and 24 academicians of the Chinese Academy of Sciences and Chinese Academy of Engineering, directors of international associations, the inventor of the COMS integrated circuit and the founder of MEMS Research Center in Singapore. Participants also include senior managers from State-owned companies such as China Railway, State Grid, Sinopec, PetroChina, Aviation Industry Corporation of China. In addition, professors from MIT, University of Colorado, University of Michigan, University of Cincinnati, University of Washington, University of Geneva of Switzerland, Tsinghua University are also in attendance. Managers in charge of technology at overseas companies including IBM, Siemens, Microsoft, Bosch, GE, Nokia, NTT, SK Telecom, ARM, Kaspersky, Honeywell and Tesla Motors, as well as domestic ones, including China Mobile, China Telecom, China Unicom, Huawei, Lenovo, Inspur, Haier, Midea, Foxconn, Alibaba, Baidu, Tencent, JD.com, Qihoo 360 and Neusoft will also take part in the event. With its exhibition area expanded to 50,000 m2 from 32,000 m2, the expo accommodates 489 exhibitors who will demonstrate technology applications and practical cases to visitors with interactive displays. Companies participating in the Expo include IBM, Siemens, OMRON, ARM, Infineon Technologies, China Telecom, China Mobile, China Unicom, XCMG, China North Industries Group Corporation, Aisino Corporation, Huawei, ZTE, Alibaba, Tencent, JD.com, AsiaInfo, Hikvision and Lenovo.


News Article | October 31, 2016
Site: www.prnewswire.co.uk

WUXI, China, 31. Oktober 2016 /PRNewswire/ -- Die IoT-Weltmesse findet vom 30. Oktober bis zum 1. November 2016 in Wuxi statt. Die Messe ist eine Gemeinschaftsinitiative des chinesischen Ministeriums für Industrie und Informationstechnologie, des chinesischen Ministeriums für Wissenschaft und Technik und der Volksregierung der Provinz Jiangsu. Sie wird von der Chinesischen Akademie der Wissenschaften (CAS), der Internationalen Fernmeldeunion (ITU), dem Institute of Electrical and Electronics Engineers (IEEE), dem Global Standard 1 (GS1) und Auto-ID Labs unterstützt und ist die größte und renommierteste landesweite Messe des Internet-der-Dinge-Sektors in China. Die Internationale Chinesische IoT-Messe findet seit 2010 im Jahresrhythmus statt und hat seither einen hohen Bekanntheitsgrad erlangt. Im Oktober dieses Jahres hat sie sich mit Genehmigung des Zentralkomitees der Kommunistischen Partei Chinas und des Staatsrats der Volksrepublik China zur Weltmesse für das Internet der Dinge umbenannt. Im Vergleich zu früheren Jahren ist die Messe größer mit renommierteren Teilnehmern und fortschrittlicheren Technologien. Verschiedene Ausstellungen und aufgewertete Technologien machen die Veranstaltung zu einem Neubeginn für die Internet-der-Dinge-Messe. Die Messe mit dem Motto „IoT-Ära einläuten, globale Intelligenz teilen" umfasst verschiedene Aktivitäten wie beispielsweise den IoT-Wuxi-Gipfel, die zentrale Ausstellung für IoT-Anwendungen und -Produkte, den nationalen chinesischen Hochschul-Innovationswettbewerb für IoT-Anwendungen und das 4. Treffen der Lenkungsgruppe der Wuxi National Sensor Network Innovation Demonstration Zone. Am IoT-Wuxi-Gipfel nahmen einheimische und internationale Gäste teil. Grundsatzreden gab es von Zhang Xiaogang, Präsident der Internationalen Organisation für Normung (ISO), und Malcolm Johnson, stellvertretender Generalsekretär der Internationalen Fernmeldeunion (ITU). Zu den Rednern zählten außerdem Khalil Najafi, Professor am Fachbereich Electrical and Computer Engineering an der University of Michigan, Nadia Magnenat Thalmann, Gründerin und Leiterin des MIRALab-Forschungslabors an der Universität Genf, Alain Crozier, Leiter und CEO von Microsoft Greater China Region, Wu Hequan, Mitglied der Chinesischen Akademie der Ingenieurwissenschaften, Wang Jian, Chief Technology Officer bei Alibaba, Zhang Shunmao, Präsident von Huawei Marketing and Solutions, und Liu Haitao, Vorsitzender der World Sensing Net Group (WSN Group). Neben einem IoT-Wettbewerb für Hochschulstudenten und einer Jobbörse gab es eine Pressekonferenz, bei der der Bauplan für eine zukunftsweisende „Internet-der-Dinge-Stadt" enthüllt wurde, um die Entwicklung der IoT-Branche in Wuxi voranzubringen. Die Messe zählte über 3.000 Gäste aus 23 Ländern und Regionen, darunter 10 Ministeriumsleiter und 24 Mitglieder der Chinesischen Akademie der Wissenschaften und der Chinesischen Akademie der Ingenieurwissenschaften, Vorsitzende internationaler Gesellschaften, der Erfinder des integrierten CMOS-Schaltkreises und der Gründer des MEMS-Forschungszentrums in Singapur. Zu den Gästen gehörten darüber hinaus Führungskräfte von Staatsbetrieben wie China Railway, State Grid, Sinopec, PetroChina und Aviation Industry Corporation of China. Anwesend waren zudem Professoren des MIT, der University of Colorado, University of Michigan, University of Cincinnati, University of Washington, Universität Genf und Tsinghua-Universität. Dem Event beiwohnen werden außerdem Technologieleiter von internationalen Unternehmen wie IBM, Siemens, Microsoft, Bosch, GE, Nokia, NTT, SK Telecom, ARM, Kaspersky, Honeywell und Tesla Motors und einheimischen Unternehmen wie China Mobile, China Telecom, China Unicom, Huawei, Lenovo, Inspur, Haier, Midea, Foxconn, Alibaba, Baidu, Tencent, JD.com, Qihoo 360 und Neusoft. Mit einer von 32.000 m2 auf 50.000 m2 vergrößerten Ausstellungsfläche finden auf der Messe 489 Aussteller Platz, die den Besuchern über interaktive Displays interessante Technologieanwendungen und Praxisbeispiele präsentieren werden. Unter den Messeteilnehmern finden sich Namen wie IBM, Siemens, OMRON, ARM, Infineon Technologies, China Telecom, China Mobile, China Unicom, XCMG, China North Industries Group Corporation, Aisino Corporation, Huawei, ZTE, Alibaba, Tencent, JD.com, AsiaInfo, Hikvision und Lenovo.


News Article | November 2, 2016
Site: www.prnewswire.co.uk

WUXI, China, 2 de noviembre de 2016 /PRNewswire/ -- La exposición mundial de la IdC se celebra del 30 de octubre al 1 de noviembre de 2016 en Wuxi. La exposición está organizada conjuntamente por el Ministerio Chino de Industria y Tecnología de la Información, el Ministerio Chino de Ciencia y Tecnología y el Gobierno Popular Provincial de Jiangsu. También patrocinada por la Academia China de las Ciencias (ACC), la  Unión Internacional de Telecomunicaciones (UIT), el Instituto de Ingenieros Electricistas y Electrónicos (IIEE), Global Standard 1 (GS1) y Auto-ID Labses la mayor exposición a nivel nacional y la de mayor escala del sector de la Internet de las Cosas en China. La exposición internacional china de la IdC se ha celebrado anualmente desde 2010, y se ha hecho ampliamente conocida en los últimos seis años. Este octubre, aprobada por el Comité Central del CPC y el Consejo de Estado, fue renombrada como la Exposición mundial de la Internet de las Cosas. En comparación con años anteriores, el evento de este año incluirá a participantes de mayor escala y nivel y tecnologías más avanzadas. Con numerosas exhibiciones y tecnologías actualizadas, el evento impulsa un nuevo comienzo para la Exposición de la Internet de las Cosas. Con el tema de "Crear la era IdC, compartir la inteligencia global", esta exposición consiste en varias actividades que incluyen la Cumbre IdC de Wuxi, la principal exposición de aplicaciones y productos IdC, el concurso de innovación en aplicaciones IdC de las universidades nacionales chinas y la cuarta reunión del grupo de gobierno de la Wuxi National Sensor Network Innovation Demonstration Zone. La Cumbre IdC de Wuxi invitó a personalidades nacionales e internacionales, como el presidente de la Organización Internacional de Estandarización (ISO) Zhang Xiaogang y el subsecretario general de ITU Malcolm Johnson, para ofrecer los discursos de apertura. Entre los ponentes también se incluyen:  Khalil Najafi, profesor del departamento de ingeniería de electricidad y computacional en la Universidad de Michigan; Nadia Magnenat Thalmann, fundadora y directora del Laboratorio de investigación MIRALab de la Universidad de Ginebra; Alain Crozier, director y consejero delegado de Microsoft para la región de China continental; Wu Hequan, académico de la Academia China de Ingeniería; Wang Jian, director de Tecnología en Alibaba; Zhang Shunmao, el director general de Huawei Marketing and Solutions y Liu Haitao, presidente de World Sensing Net Group (WSN Group). Además de un concurso sobre IdC para estudiantes universitarios y una feria de empleo, el evento también incluye una rueda de prensa para lanzar el plan de construcción de una "ciudad de Internet de las Cosas" de clase mundial para promover el desarrollo de la industria de la IdC de Wuxi. La Cumbre IdC de Wuxi tiene las siguientes características: Más de 3.000 invitados de 23 países y regiones asistieron a la exposición, incluyendo 10 líderes ministeriales y 24 académicos de la Academia China de las Ciencias y la Academia China de Ingeniería, directores de asociaciones internacionales, el inventor del circuito integrado de COMS y el fundador del Centro de Investigación MEMS en Singapur. Los participantes también incluyen altos directivos de compañías estatales como  China Railway, State Grid, Sinopec, PetroChina, Aviation Industry Corporation of China. Además, los profesores de MIT, Universidad de Colorado, Universidad de Michigan, Universidad de Cincinnati, Universidad de Washington, Universidad de Ginebra de Suiza, Universidad Tsinghua también asistieron. Los gestores a cargo de tecnología en compañías internacionales como IBM, Siemens, Microsoft, Bosch, GE, Nokia, NTT, SK Telecom, ARM, Kaspersky, Honeywell y Tesla Motors, así como naionales, como China Mobile, China Telecom, China Unicom, Huawei, Lenovo, Inspur, Haier, Midea, Foxconn, Alibaba, Baidu, Tencent, JD.com, Qihoo 360 y Neusoft también participaron en el evento. Con su área de exposición ampliada a 50.000 m2 desde 32.000 m2, la exposición aloja 489 expositores que demuestran aplicaciones tecnológicas y casos prácticos a los visitantes con pantallas interactivas. Las compañías participantes en la exposición son IBM, Siemens, OMRON, ARM, Infineon Technologies, China Telecom, China Mobile, China Unicom, XCMG, China North Industries Group Corporation, Aisino Corporation, Huawei, ZTE, Alibaba, Tencent, JD.com, AsiaInfo, Hikvision y Lenovo.


News Article | November 1, 2016
Site: www.prnewswire.co.uk

WUXI, Chine, 1 novembre 2016 /PRNewswire/ - L'Expo mondiale de l'internet des objets (IdO) se tient du 30 octobre au 1er novembre 2016 à Wuxi. Elle est organisée conjointement par le ministère chinois de l'industrie et des technologies de l'information, le ministère chinois des sciences et de la technologie et le gouvernement du Jiangsu populaire provincial. À la fois soutenue par l'Académie chinoise des sciences (ACS), l'Union internationale des télécommunications (UIT), l'Institut des ingénieurs électriciens et électroniciens (IEEE), Global Standard 1 (GS1) et Auto-ID Labs, elle constitue la plus grande exposition nationale consacrée au secteur de l'internet des objets en Chine. L'Expo internationale chinoise de l'internet des objets a lieu chaque année depuis 2010 et s'est fait connaître plus largement au cours des six dernières années. En ce mois d'octobre, avec l'accord du Comité central du PCC et du Conseil d'État, elle a été rebaptisée « Exposition mondiale de l'internet des objets ». Cette année, l'événement se déroulera à plus grande échelle, accueillera des participants de plus haut niveau et exposera des technologies plus avancées. L'événement constitue un nouveau départ pour l'Exposition de l'internet des objets grâce à des expositions multiples et des technologies améliorées. Autour du thème « Créer l'ère de l'IdO et partager l'intelligence mondiale » l'exposition propose diverses activités, y compris le Sommet mondial de l'IdO de Wuxi, l'exposition principale consacrée aux produits et applications de l'IdO, le concours d'innovation en matière d'applications de l'IdO opposant les universités chinoises et la 4e réunion de la Wuxi National Sensor Network Innovation Demonstration Zone. Le Sommet mondial de l'IdO de Wuxi a convié des personnalités nationales et internationales, telles que Zhang Xiaogang, le président de l'Organisation internationale de normalisation (ISO) et Malcolm Johnson, le secrétaire général adjoint de l'UIT à prendre la parole. Parmi les orateurs figurent également Khalil Najafi, professeur du département du génie électrique et informatique de l'Université du Michigan ; Nadia Magnenat-Thalmann, fondatrice et directrice du Laboratoire de recherche MIRALab de l'Université de Genève ; Alain Crozier, président-directeur général de Microsoft pour la région Grande Chine ; Wu Hequan, académicien de l'Académie chinoise d'ingénierie ; Wang Jian, directeur de la technologie chez Alibaba ; Zhang Shunmao, président de Huawei Marketing and Solutions et Liu Haitao, président de World Sensing Net Group (WSN Group). En plus d'un concours de l'IdO destiné aux étudiants et d'un salon de l'emploi, l'événement prévoit également une conférence de presse qui dévoilera le plan de construction d'une « ville de l'IdO » de classe mondiale visant à promouvoir le développement de l'industrie de l'IdO à Wuxi. Le Sommet mondial de l'IdO de Wuxi présente les caractéristiques suivantes : Plus de 3 000 personnes de 23 pays et régions ont participé à l'exposition, dont 10 dirigeants ministériels et 24 académiciens de l'Académie chinoise des sciences et de l'Académie chinoise d'ingénierie, des directeurs d'associations internationales, l'inventeur du circuit intégré COMS et le fondateur du centre de recherche sur les microsystèmes électromécaniques de Singapour. Les participants comprennent également les cadres supérieurs d'entreprises publiques telles que China Railway, State Grid, Sinopec, PetroChina, Aviation Industry Corporation of China. En outre, les professeurs du MIT, de l'Université du Colorado, de l'Université du Michigan, de l'Université de Cincinnati, de l'Université de Washington, de l'Université de Genève en Suisse, de l'Université de Tsinghua sont également présents. Les gestionnaires en charge de la technologie dans des entreprises étrangères, y compris IBM, Siemens, Microsoft, Bosch, GE, Nokia, NTT, SK Telecom, ARM, Kaspersky, Honeywell et Tesla Motors, ainsi que des entreprises nationales, y compris China Mobile, China Telecom, China Unicom, Huawei, Lenovo, Inspur, Haier, Midea, Foxconn, Alibaba, Baidu, Tencent, JD.com, Qihoo 360 et Neusoft prendront également part à l'événement. En passant d'un espace d'exposition de 32 000 à 50 000 m2, le salon peut désormais accueillir quelque 489 exposants qui proposeront aux visiteurs des démonstrations d'applications technologiques et des cas pratiques par l'intermédiaire d'expositions interactives. Les entreprises participant à l'Expo comprennent IBM, Siemens, OMRON, ARM, Infineon Technologies, China Telecom, China Mobile, China Unicom, XCMG, China North Industries Group Corporation, Aisino Corporation, Huawei, ZTE, Alibaba, Tencent, JD.com, AsiaInfo, Hikvision et Lenovo.


Peng X.-L.,Northwestern Polytechnical University | Fang Z.-D.,Northwestern Polytechnical University | Su J.-Z.,Northwestern Polytechnical University | Pei S.-S.,China North Industries Group Corporation
Hangkong Dongli Xuebao/Journal of Aerospace Power | Year: 2012

A method of tooth grinding for face gear machining by using grinding disk was proposed with the purpose to manufacture hardened face gear with high precision and obtain parabolic transmission errors and increase transmission stability. The generation theory and grinding disk motion of face gear abraded by grinding disk were analyzed, the surface equation of grinding disk was deduced according to the generation theory, and the double crowned tooth surface equation of face gear was derived based on using grinding disk with mismatch involute and modified movement of grinding disk. The model of tooth contact analysis of double crowned face gear meshing with traditional involute pinion was established. Instances of tooth surface calculation and tooth contact analysis indicate that the method of gear grinding applied to manufacture double crowned face gear through grinding disk is feasible, parabolic transmission errors of face gear can be obtained, edge contact is avoided and is enhanced the stability of transmission.


Bao N.,Shandong University | Li Y.,Shandong University | Wei Z.,China North Industries Group Corporation | Yin G.,Shandong University | Niu J.,Shandong University
Journal of Physical Chemistry C | Year: 2011

In this Article, the surface characteristics of acid-modified continuous TiO2 fibers, the adsorption of dyes, and the photocatalytic degradation of dye pollutants under UV and visible light irradiation were investigated. After HF extraction of silicon, a hierarchical mesoporous structure is produced. The ?OH groups located on the surface were more resistant to exchange with F? because of the inductive effect on surface Ti4+ centers originating from adjoining electronegative F? ions. After protonation of the HF-modified fibers by HNO3 treatment, the photodegradation percentage of X-3B on the TiO2 fibers reached 98% in 45 min under visible light irradiation, and the first-order rate constant increased by a factor of 163.4. The high visible light activity was mainly attributed to a synergetic effect of the hierarchical mesoporous structure and the strong adsorption of X-3B upon the protonated surface. The adsorption isotherms showed that the adsorption of X-3B on acid-modified TiO2 followed the Langmuir model with a maximum adsorption capacity of 19.03 mg/g, 6-fold higher than the unmodified TiO2. The nature of the X-3B sorption was spontaneous and thermodynamically favorable. The sorption kinetics was best described by the pseudo-second-order model. © 2011 American Chemical Society.


Wang J.-X.,Beijing Institute of Technology | Lin D.-F.,Beijing Institute of Technology | Qi Z.-K.,Beijing Institute of Technology | Cheng Z.-X.,China North Industries Group Corporation
Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology | Year: 2013

For issues of the disturbance rejection rate parasitical loop (DRRPL) of strapdown phased array radar seeker, the reasons for the problem were discussed. The normalized model of DRRPL was established, and the stability and the frequency response of DRRPL were analyzed. The effect of DRRPL on PN guidance system was studied with the method of adjoints. The results demonstrate that the imperfect decoupling and the error of angle measure are main reasons for the above problem of DRRPL. Compared with the feedback, the parasitical loop with the feedforward is more sensitive to disturbance rejection rate, and the open-loop crossover frequency gets lower when DRRPL is marginally stable. Important parameters and miss distance (MD) of PNG will be affected seriously by DRRPL.


Wang T.,Beijing Institute of Technology | Xie L.J.,Beijing Institute of Technology | Wang X.B.,Beijing Institute of Technology | Jiao L.,Beijing Institute of Technology | And 3 more authors.
Procedia CIRP | Year: 2013

The surface quality of components produced through milling of particle reinforced aluminum matrix composites (PRAMCs) is one of the most important factors influencing their practical performance. Therefore, the increasing applications of PRAMCs necessitate an in-depth understanding of the variation law of surface integrity. This paper presents a systematic experimental research of high speed milling of Al/SiC/65p (65% volume fraction) by polycrystalline diamond tools (PCD). The influences of cutting parameters on surface roughness (Ra), surface residual stress (RS) and morphology of PRAMCs were investigated. In addition, the experiments on corresponding unreinforced matrix alloy Al 6063 were also carried out to analyze the influence of the present reinforcements on surface integrity. The results of full factorial experiment revealed that the most significant milling parameter for surface roughness was milling speed, followed by the interaction between feed rate and milling speed, then the feed rate. In terms of residual stress on the machined surface, axial depth of cut had the highest influences on surface residual stress, followed by milling speed and feed rate. The results of single-factor experiment demonstrated that surface roughness improved slightly with the decrease in the feed rate, while the effect of milling speed was negligible. Residual stress measured in feed direction by X-ray diffraction (XRD) indicated that the conditions of machined Al6063 surface were all tensile, while the conditions of Al/SiC/65p were compressive. Copyright © 2013 Elsevier B.V.


Wang H.,Beijing Institute of Technology | Lin D.-F.,Beijing Institute of Technology | Cheng Z.-X.,China North Industries Group Corporation
Journal of Beijing Institute of Technology (English Edition) | Year: 2011

For maneuvering target, the optimal trajectory shaping guidance law which can simultaneously achieve the designed specifications on miss distance and final impact angle was deduced using optimal control theory based on the time-to-go weighted function. Based on the same cost function, the closed-form solutions of the guidance law were derived when the initial displacement of missile, final impact angle, heading error and target maneuver was introduced into the lag-free guidance system. To validate the closed-form solutions, the simulation of the lag-free system was done and the simulation results exactly matched the closed-form solutions and only when the exponent is greater than zero, the final acceleration approaches to zero. © Copyright.

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