Sinking-hoists synchronous balance control system in vertical shaft

In order to solve the problems existing in traditional shaft sinking-hoists, the variable-frequency adjustable-speed system was designed for the sinking-hoists firstly. Then, taking four platform sinking-hoists as the research object, we studied strategy of synchronous controls of the sinking-hoists based on PID and model-reference adaptive control, simulated the performances of the synchronous strategy, and performed the field test. The results show that, after the reconstruction of controls parameters, the ability of anti-disturbance of the controls system have been enhanced and the motor speeds and sinking depths of the sinking-hoists have a great synchronous effect, greatly improved the predictability of the system.