SWING CONTROL DEVICE FOR CONSTRUCTION MACHINE

摘要

PROBLEM TO BE SOLVED: To realize a swing control system harmonizing speed control and torque control of a swing body well.

SOLUTION: A control means determines target speed and limit torque based on an operation signal of an operating means, obtains a torque value by feedback control from the deviation between the target speed and the swing speed of a speed detecting means, compares the torque value with the limit torque, and sets the torque value with a smaller absolute value as a torque control quantity to obtain a control input signal of an inverter together with the target speed.

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