| With high efficiency, small size, and superior control performance, permanent magnet synchronous motor (PMSM) gradually become the mainstream of new elevator traction machine. The drive and control technology of permanent magnet synchronous motor for elevator has gained much attention at home and abroad.First of all, working principal and architecture of this PMSM drive and control system is analyzed. What's more, based on detailed introduction of the mathematical model and related vector control, modeling of the whole servo system is completed. In order to meet the requirements for elevator speed control system with permanent magnet synchronous motor, the advanced PID control and fuzzy self-tuning PID control are brought up. The result is verified through simulation by MATLAB. In order to improve the robustness of permanent magnet synchronous motor position servo system, anti-buffet sliding mode control and adaptive robust control are introduced. For a class of second order nonlinear systems with parameter perturbation and external perturbation, sliding mode controller and adaptive robust controller are developed. The sliding mode control law ensures asymptotic tracking stability of the position servo system. But the violent chatting limits its application in practice. The adaptive robust control ensures the tracking within a desired precision, and all control signals are bounded. Simulation results confirmed the validity of the robust controllers.Software and related algorithm of this PMSM servo system based on DSP are accomplished. Modularized design is used for speed controller, current controller, SVPWM, communication and so on.A combination debugging of hardware and software has been carried out, main problems occurring during the process are analyzed and solutions to them are proposed. The experimental results show that this PMSM servo system has excellent speed performance to meet the requirements of elevator drive system. |
PDF Full Text Request