Servo control system with position compensation function for driven member

A servo control system comprising:

• a servo motor;
• a driven member driven by the servo motor;
• a coupling mechanism coupled with the servo motor and the driven member, the coupling mechanism using the servo motor as a power source to generate a drive force acting on the driven member at a coupling part of the driven member and the coupling mechanism;
• and
• a motor control part controlling the servo motor, wherein
• the motor control part comprises
• a position command generating part generating a position command value of the driven member,
• a force estimating part estimating the drive force acting on the driven member at the coupling part,
• a compensating part compensating the position command value generated by the position command generating part based on the drive force estimated by the force estimating part, and
• a control signal output part outputting a control signal to the servo motor based on a position command value compensated by the compensating part.