Tianjin Key Laboratory of Advanced Mechatronic Equipment Technology

Tianjin, China

Tianjin Key Laboratory of Advanced Mechatronic Equipment Technology

Tianjin, China
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Xu Y.-X.,Tianjin Polytechnic University | Xu Y.-X.,Tianjin Key Laboratory of Advanced Mechatronic Equipment Technology | Yang W.-P.,Tianjin University of Technology and Education | Lu X.,Tianjin Polytechnic University | And 5 more authors.
Zhendong yu Chongji/Journal of Vibration and Shock | Year: 2013

The study was to obtain vibration signals and BDC signals on cylinder head surfaces without disassembling a car engine, then the energy of vibration signals in time domain was divided in to segments reasonably according to the crankshaft rotating period, and the energy in time domain of each segment was extracted as the state characteristic values of the engine cylinders. The training sets of the engine cylinders with different fault states were established. The support vector machine method was adopted to realize engine fault diagnosis and recognition. The results showed that the proposed method is helpful for diagnosis of engine fault type and fault location.


Cui L.,Tianjin Polytechnic University | Cui L.,Tianjin Key Laboratory of Advanced Mechatronic Equipment Technology | Zhao S.,Tianjin Polytechnic University | Zhao S.,Tianjin Key Laboratory of Advanced Mechatronic Equipment Technology | And 2 more authors.
Advanced Materials Research | Year: 2013

Electroless nickel has been used to prepare composite coatings with embedded nanoparticles. Surfactants and agitation methods have marginal effects on the deposition behavior of electroless composite coatings. Many researchers have investigated the influences of nanoparticles including WC, SiC, Al2O3 and diamond on the tribological properties of composite coatings. The present article reviewed mainly the advancement of electroless Ni-P nanocomposite coatings in recent years. The existing problems and the suggestions for the further study of composite coatings were indicated. © (2013) Trans Tech Publications, Switzerland.


Huang L.,Tianjin Polytechnic University | Huang L.,Tianjin Key Laboratory of Advanced Mechatronic Equipment Technology | Zhao S.,Tianjin Polytechnic University | Zhao S.,Tianjin Key Laboratory of Advanced Mechatronic Equipment Technology | And 2 more authors.
Advanced Materials Research | Year: 2013

For the requirements of the lye concentration in the mercerizing process, this article is designed for the control of the lye concentration in the integral separation PID controller, the controller is based on conventional PID control, Integral separation, and further improve the performance of the PID controller, improve the accuracy of the lye concentration control system. Simulation results show that: precise characteristics of the controller's existing conventional PID controller, and integral separation PID control system overshoot, improve the dynamic performance of the control system, enables the system to achieve satisfactory control performance. © (2013) Trans Tech Publications, Switzerland.

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