Induction Motor Parameter Identification And Adaptive Control Strategy

In this paper, asynchronous motor of such a multi-variable, strong coupling, the parameters of the complex time-varying nonlinear systems, studied the induction motor parameter identification and state estimation methods Systematically, presented a high-performance induction motor control scheme of the all-digital, designed hardware and software of digital control system.This paper summarized the high-performance induction motor control strategy of the development process and parameter identification of induction motor current development status. From the theoretical analyzed the affect of induction motor parameters on the performance of motor control in theory, and introduce vector control and a more in-depth, pointing out the advantages and disadvantages that it applies to motor control systems. After the introduction of the induction motor equivalent circuit and mathematical models, studied the vector control, speed sensorless vector control, as well as the flux estimates based on low-pass filter, studied an online rotor time constant estimation methods and discussed the rotor time constant on the impact of field-oriented control at the same time, This paper presents a directional angle of the rotor based on the adaptive correction technology program, theory showed that the system has good dynamic characteristics and robustness. For the problem of speed estimated in speed sensorless vector control system, studied the induction motor speed estimator and compared a number of advantages and disadvantages of the speed estimation methods; this paper presented a scheme which based on induction motor digital control system of DSP28x digital signal processor. This paper applied C and assembly language programming to design the software of system control, and self-developed a platform-wide achieved the induction motor digital control.This paper given the simulation results of induction motor parameter identification and state estimation; Adopted TMS320F28x DSP to achieve the closed-loop vector induction motor speed control and speed sensorless vector control, and given the preliminary experimental results.