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For the purpose of synchronization of three independent DC motors which were used to drive the supporting poles of a table-lift, a “master-servant” structured control scheme is introduced. By taking the master pole's output as reference signal and the servant pole's output as feedback signal, servant poles become the followers of the master pole. Hall sensors are employed to transmit the rotations...
The real-time torque calculation and dynamic modeling have been the difficulties in the motion control of the permanent magnet spherical stepper motor. Based on the presented continuous trajectory tracking control mode, a simplified torque calculation method and the non-linear system dynamic model have been proposed. The perturbation of the system parameters, the model error and the external disturbance...
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