Design of the Induction Motor Control System and Study of DSP- Based Controller Implementation

• Main Authors: Yen, Fu-Tsu, 嚴賦簇
• Other Authors: Tel-Lu Liao
• Format: Others
• Language: zh-TW
• Published: 1996
• Online Access: http://ndltd.ncl.edu.tw/handle/66008346272386262425

碩士 === 國立成功大學 === 工程科學系 === 84 === In this thesis, we propose a fully digitalized vector control scheme to achieve the tracking control of the speed and flux of the induction motor. The high-performance current control is employed such that the induction motor can satisfactorily operate even when the saturation of supplied voltage occurs. To estimate the rotor flux vector, we use stator current information by passing through a low-pass filter such that the actual system does not require additional sensors. The proposed scheme combines a high-speed digital signal processor(TMS320 C31) and the driver we designed to establish the digital implementation. Experimental results are given to demonstrate the stability and robustness of the proposed control system. Finally, based on the input-output linearization technique we present the nonlinear control scheme for the induction motor servo system to achieve the tracking goal of speed and flux. Without direct mearsurement of rotor flux, we derive a discrete Kalman filter to estimate the rotor flux only using the stator current. The nonlinear controller is implemented by using digital method through the samplerand holder. Numerical simulation results are also presented to show the feasibility and robustness of the proposed nonlinear controller.