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Yu R.,Changzhou Vocational Institute of Engineering
Chemical Engineering Transactions

Storage battery's thin energy density has directly restricted the industrial development of electric vehicles, the pivotal parameters have been matching based on the theoretical analysis of circulating operation, and combined with genetic algorithm's superior ability, the peak power of motor and ratio of transmission have been optimized with the consideration of dynamic restriction. The results show that the optimized parameter can lead the automobile' driving mileage to increase 18.78% on the basic dynamic requirement of national standard. Copyright © 2015, AIDIC Servizi S.r.l. Source

Yu R.,Changzhou Vocational Institute of Engineering
Chemical Engineering Transactions

Considering the parameters of the traditional PID control algorithm are not capable of online adjustment and do not have adaptive capability once they are determined, which can not satisfied the precision control requirement of servo system with complex nonlinear friction, a PID controller based on radial basis function neural network (RBFNN) is designed, the advantages of RBFNN such as infinity approaching nonlinear system, little operation quantity and speedy constringency are combined with PID control technology organically to obtain high position tracking accuracy. The simulate results show that compared with common PID control, the RBFNN PID controller can adaptively adjust the controller parameters, greatly improving the control precision of the system. Copyright © 2015, AIDIC Servizi S.r.l. Source

Hao Y.,Xian Jiaotong - Liverpool University | Chong W.,Xian Jiaotong - Liverpool University | Man K.L.,Xian Jiaotong - Liverpool University | Liu O.,Xian Jiaotong - Liverpool University | Shi X.,Changzhou Vocational Institute of Engineering
Lecture Notes in Engineering and Computer Science

With the Increasing popularity of Information communication technologies, crowdsowcing has become a significant method for companies to involve customers in various enterprises' activities. Also, since user experience (UX) emerges as an important element in the design of interactive products, it is essential to indentify the main detcnninants that can improve UX. Based on recent siudics, this paper provides a conceptual framework indicating key factors that influence the LJX of mobile crowdsourcing applications. These factors range from easiness of tasks in crowdsourcing applications, users' attitudes towards crowdsourcisg companies, social influences to economic reward in crowdsourcing activities. Source

Chen X.,Kochi University | Chen X.,Changzhou Vocational Institute of Engineering | Chen Z.,Changzhou University | Hojo M.,Kochi University
Journal of Molecular Liquids

In binary mixed solvents, acetonitrile-water (MeCN-H2O) and acetonitrile-methanol (MeCN-MeOH), specific interactions between alkali metal (M+ = Li+, Na+) or alkaline earth metal ions (Mg2 +, Ca2 +, Ba2 +) and the 1,4- or 2,3-naphthalenedicarboxylate ion [(n-Bu4N+)2L2 -] have been thoroughly examined by UV-visible spectroscopy. With increasing LiClO4 concentration, tetrabutylammonium 1,4-naphthalenedicarboxylate (1.0 × 10- 4 mol dm- 3) causes the precipitation of Li2L in 2.0-15% (v/v) MeOH-MeCN, however, the precipitates are apt to re-dissolve completely to form the "reverse-coordinated" species, Li3L+, with the further addition of an excess amount of LiClO4. NaClO4 causes similar precipitation and re-dissolution of the precipitates in similar conditions. The formation of ML and M2L2 + species of Mg2 +, Ca2 +, and Ba2 + have been observed up to15 or 20% (v/v) H2O-MeCN. Even in sole EtOH, the ML and M2L2 + species have been clearly observed for Mg2 + and Ba2 + but not for Ca2 +. Contrastingly, the precipitates of Li2L and Na2L of 2,3-naphthalenedicarboxylate (1.0 × 10- 4 mol dm- 3) would not re-dissolve in the presence of 1.0 mol dm- 3 LiClO4 or NaClO4 in 2.0 or 5.0% (v/v) H2O-MeCN. Because of the higher solubility of MgL in H2O-MeCN solvents, the Mg2L+ species can be observed only in 2.0 or 5.0% (v/v) H2O-MeCN. Between the L2 - ion and Ca2 + or Ba2 +, the precipitation and the successive re-dissolution of precipitates have been observed obviously in a narrow range around 25 or 30% (v/v) H2O. The precipitates of BaL and "reverse-coordinated" species of Ba2L2 + of the 2,3-derivative have been observed in sole MeOH or EtOH. Generally speaking, the solubility products (pKsp) and the "reverse" coordination constants (log K3 or log K2) both for 1,4- and 2,3-derivatives decrease with increasing contents of H2O or MeOH in MeCN; where, 3 M+ + L2 - ⇄ M3L+, K3 = [M3 L+] / ([M+]3 [L2 -]) or 2 M2 + + L2 - ⇄ M2L2 +, K2 = [M2 L2 +] / ([M2 +]2 [L2 -]). © 2016 Elsevier B.V. All rights reserved. Source

Yu R.,Changzhou Vocational Institute of Engineering
International Journal of Control and Automation

Aiming at the market shares of automatic mechanical transmission, the driving smoothness was studied. Based on the dynamical model of automatic mechanical transmission, the numerical model of automatic mechanical transmission had been established and a shifting strategy was analyzed. The result shows that the impact of automatic mechanical transmission on the condition of shifting fast can meet the national legislation. © 2016 SERSC. Source

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