http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Robust Repetitive Control Design and Its Application on Linear Servo Systems
Zeyuan Li,Wennong Zhang,Yihuang Zhang,Xiang Xu 한국정밀공학회 2015 International Journal of Precision Engineering and Vol. No.
A robust design method of the discrete-time plug-in repetitive control system is proposed. By modifying the stabilizing compensator,the robustness of the repetitive control system can be well ensured together with the zero-following error performance. The designmethod is simple and straightforward. Meanwhile, a novel robustness criterion for the discrete-time repetitive control system isintroduced, and theoretical analysis is taken to compare the robustness of the proposed controller with the widely used zero phaseerror tracking controller (ZPETC). The proposed repetitive controller is implemented in a linear servo system. Simulation isperformed to verify the theoretical analysis, and the experimental results show the effectiveness of the proposed controller.
Kewang Qu,Guoqing Xu,차석원,Yanhui Zhang,Wei Feng,Junci Cao,Weili Li,Yihuang Zhang,Zhigang Wu 한국정밀공학회 2018 International Journal of Precision Engineering and Vol.19 No.9
An innovative permanent magnet synchronous motor rotor position detection method using d-q reference-frames derived from PWM inverter switching is presented based on carrier phase-shift PWM method. It also gives the development the polarity identification at standstill for permanent magnet synchronies motor in the rotary frame with position detected of the neutral voltage. The new technique detects the motor position from simple measurements of the neutral point voltage of the motor influenced by the variation of inductances with respect to rotor position. The transfer is derived with constant element and 2nd harmonic element of selfinductance and mutual-inductance between three phase inductances and the inductance of d-axis and q-axis. Theoretical studies are carried out and verified using experiment results with variation rotor position over one electrical cycle at standstill. Rotor position estimation from stator inductance variation with rotor position is effective in zero speed and low speed.