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Lin H.,Chongqing Industry Polytechnic College
Jinshu Rechuli/Heat Treatment of Metals | Year: 2014

True stress-strain data of 3Cr20Ni10W2 alloy at elevated temperatures were obtained through isothermal compression experiment. By the diverse linear regression for hyperbolic sine equation in Arrhenius type, deformation activation energy Q, materials constants n, α and A under different deforming conditions were calculated. And then the constitutive equation of the 3Cr20Ni10W2 alloy for description of the relationships among flow stress, strain, strain rate and temperature were constructed. The results show that the flow stress predicated by the proposed model agrees well with the experimental results, and the maximum relative tolerance is only 7.45% and correlation coefficient is 0.995.

Wang L.-F.,ChongQing Industry Polytechnic College
2010 The 2nd International Conference on Computer and Automation Engineering, ICCAE 2010 | Year: 2010

This paper designs a powerful Web-based gateway for the on-site monitoring equipment network composed by RS-485, CAN and other communication protocols, thus to bridge between them and the Internet, allowing remote users can browse and manage these on-site monitoring equipments through browser anytime and anywhere. It also describes a method to optimize the network module based on applications, introduces the serial communication protocol integration of two types of industrial digital monitoring equipment, and finally presents the establishment of Web server. ©2010 IEEE.

Yan B.,Chongqing Industry Polytechnic College
Electronic Journal of Geotechnical Engineering | Year: 2016

With a certain large-scale rock slope with weak structural plane in three gorges reservoir region as research object, several typical instability criterions of strength reduction method are discussed through numerical stimulation based on FLAC3D, to determine the convergence of displacement time history curve is used for instability criterion of the slope under the earthquake. Safety factor of slope is obtained by strength reduction method and dynamic response and failure mechanism of it under the earthquake are respectively studied. Besides, risk analysis for the slope is evaluated through analytic hierarchy process (AHP) and compared with the results of numerical stimulation to analyze the stability of rock slope under the earthquake. It is proved that the safety factor of the slope under the earthquake has exceeded safety margin. © 2016 ejge.

Liu D.-K.,ChongQing Industry Polytechnic College
Applied Mechanics and Materials | Year: 2014

Having been constructed for the last 17 years, the world-famous Three Gorges Project is expected to complete this year. The article explores the circular competence indicator of establishing industrial system based on the characteristics of ecological economy of Three Gorges Reservoir Region. And the results show that the development of Three Gorges Reservoir Region is at the initial stage of the development of circular economy. The article also constructs an "early warning system for the development of circular economy" so that decision-making departments can keep on track the development situations of circular economy at any time. Through constructing a reasonable operating mechanism, the development of circular economy will be the significant carrier for achieving sustainable development and enhancing the competitiveness of Three Gorges Reservoir Region. Meanwhile, we should also establish the support and protection system of the circular economy system at all posts. Developing circular economy can resolve the issues of circular system of the industry during the process of development, and achieve the virtuous circle of nature, ecology, economy and society. © (2014) Trans Tech Publications, Switzerland.

Shen Y.,Chongqing Industry Polytechnic College
Energy Conversion and Management | Year: 2010

This paper presents a novel approach using adaptive artificial neural network based model and neuro-controller for online cell State of Charge (SOC) determination. Taking cell SOC as model's predictive control input unit, radial basis function neural network, which can adjust its structure to prediction error with recursive least square algorithm, is used to simulate battery system. Besides that, neuro-controller based on Back-Propagation Neural Network (BPNN) and modified PID controller is used to decide the control input of battery system, i.e., cell SOC. Finally this algorithm is applied for the SOC determination of lead-acid batteries, and results of lab tests on physical cells, compared with model prediction, are presented. Results show that the ANN based battery system model adaptively simulates battery system with great accuracy, and the predicted SOC simultaneously converges to the real value quickly within the error of ±1 as time goes on. © 2009 Elsevier Ltd. All rights reserved.

Yi L.,Chongqing Industry Polytechnic College
Proceedings - 2015 7th International Conference on Measuring Technology and Mechatronics Automation, ICMTMA 2015 | Year: 2015

The development of science technology and productivity makes great changes in the electronic manufacturing industry structure. Corresponding mathematical model of electronic manufacturing industry supply chain is proposed, which can make total cost of enterprise minimum. Finally, we prove the feasibility of supply chain by an example about M enterprise. © 2015 IEEE.

Li K.,Chongqing Industry Polytechnic College
2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011 - Proceedings | Year: 2011

the pedal is one of the most important parts assuring the safety and comfort of automotive. This paper adopts FEM (Finite Element Method) analysis the brake pedal assembly according to the industry standard. In order to obtain the strength of the brake pedal and on the base of the strength result of FEM the fatigue analysis is carried out to verify the strength whether meet the industry standard. At last, some experiments are conducted on the product designed by this method and the experimental results show that no fatigue failure happens. © 2011 IEEE.

Shen Y.,Chongqing Industry Polytechnic College
Energy | Year: 2014

Accurate prediction of cell SOC (state of charge) is important for the safety and functional capabilities of the battery energy storage application system. This paper presents a hybrid UPF (unscented particle filter) based SOC determination combined model for batteries. To simulate the entire dynamic electrical characteristics of batteries, a novel combined state space model, which takes current as a control input and let SOC and two constructed parameters as state variables, is advanced to represent cell behavior. Besides that, an improved UPF method is used to evaluate cell SOC. Taking lead-acid batteries for example, we apply the established model for test. Results show that the evolved combined state space cell model simulates battery dynamics robustly with high accuracy and the prediction value based on the improved UPF method converges to the real SOC very quickly within the error of±2%. © 2014 Elsevier Ltd.

Bing Y.,Chongqing Industry Polytechnic College
Electronic Journal of Geotechnical Engineering | Year: 2016

In order to accurately control the stability of reservoir bedding rock slope under seismic action, by simulation of FLAC3D, safety factor of Reservoir bedding rock slope under the influence of different factors (frequency of seismic wave, slope angle, strata dip, slope height and discontinuity spacing) were studied. The study found: Dynamic safety factor of reservoir bedding rock slope increases as the seismic wave frequency increases; Dynamic safety factor of reservoir bedding rock slope reduces significantly as the slope angle increases; Dynamic safety factor of reservoir bedding rock slope reduces gradually as the slope height increases; Effect of slope angle on dynamic safety factor of reservoir bedding rock slope by the presence of sharp slow transformation process. When the discontinuity spacing less than 10m, dynamic safety factor of slope rapidly rises with the spacing increases; when bed thickness exceeds 10m, the safety factor remained stable. © 2016 ejge.

Huang H.,Chongqing Industry Polytechnic College
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | Year: 2010

Aiming at the mistake switch and misinformation resulted from electromagnetism interference, the paper proposes an improved design thought of electromagnetic anti-jamming in hardware platform system. The electromagnetism environment located by microcomputer relay protection system, sources of electromagnetic interference, mechanism of electromagnetic anti-jamming, and behavior of digital circuits under the interference are analyzed in detail. Also the design compatibility of electromagnetic anti-jamming is studied, and the measures of electromagnetic anti-jamming should be taken in the hardware design of microcomputer relay protection system are summarized. The experiment result shows that the above summarized measures of reasonable composition and cabling as well as better grounded are feasible and effective.

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