Abstract：Ripple thrust disturbances, load disturbances, friction disturbance and other uncertainty disturbances severely deteriorate performance of permanent magnet linear synchronous motor (PMLSM) control system, and the control system put forward higher requirements on disturbance rejection. In this paper, active disturbance rejection control (ADRC) is applied, using the extended state observer (ESO) to observe and compensate the action of the entire unknown disturbance, and thus inhibit the unknown disturbances to achieve “self-resistance interference” control, while giving estimated speed and its differential. The tracking differentiator (TD) offers an effective method of calculating differential, and arranges transition of speed command according to the capacity of PMLSM. Control variable is obtained by more suitable non-linear PD feedback control law. The test bench is build using xPC Target tool of Matlab/Simulink, and experiment results show that the PMLSM ADRC control system has good performance of disturbance rejection and dynamics.
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2011, Vol. 26 
