Embodiments of the disclosure provide proportional integral derivative control (PID) using multiple actuators. In one embodiment, a process includes providing a PID controller in communication with a primary actuator and a secondary actuator, the primary actuator and the secondary actuator coupled to a handler, such as a robotic arm for manipulating an object. The process further includes receiving position feedback and a specified trajectory for the handler, and generating a dynamic feedforward force command and a position correction command for the handler based on the position feedback and the specified trajectory. The process further includes providing, from the PID controller, the dynamic feedforward force command to the secondary actuator and the position correction command to the primary actuator.

A position control device for driving one control target, using two drive shafts, has position control units provided to the respective drive shafts. Each position control unit includes a calculation unit for calculating a torque command value before compensation, a deflection vibration reduction torque compensator for calculating a deflection torque estimate and calculating a deflection vibration reduction torque compensation amount, based on the deflection torque estimate and a deflection vibration reduction compensation gain, and a compensator gain calculation unit for outputting, upon receipt of a tandem control command, to the deflection vibration reduction torque compensator, a signal for outputting the deflection vibration reduction torque compensation amount and calculating the deflection vibration reduction compensation gain, and the each of the position control units outputs a value obtained by adding the deflection vibration reduction torque compensation amount to the torque command value before compensation as the torque command value.

This control device (10) for compensating for the elastic deformation of an articulated robot is configured from a joint angle command value calculation unit (100), an axial force torque calculation unit (200), a first dynamic characteristic computing unit (300), a feedback control unit (500), and a motor angle command value calculation unit (600). The first dynamic characteristic computing unit (300) is configured from an interpolation unit configured from an N-ary curve interpolation, and a filter unit configured from an M-ary filter, with N+M being at least 4.

A control apparatus of the motor according to one aspect includes: a first feedforward calculator configured to calculate a first motor output torque value so that a torque value indicated by a torque command signal can be generated in a joint part of a robot based on a model of a motor, a decelerator, or a link and the number of rotations of the motor, a second feedforward calculator configured to calculate a second motor output torque value based on the torque value indicated by the torque command signal without depending on the number of rotations of the motor; and a comparator configured to add the first motor output torque value, the second motor output torque value, and a third motor output torque value calculated based on the torque value detected by a sensor and the torque value indicated by the torque command signal.

A control system includes processing circuitry that calculates, based on a control target model that indicates a relationship between an operation of a control target and a friction acting on the control target, a continuous value for compensating for the friction as a feedforward compensation value, generates a command based on the feedforward compensation value, and outputs the command to cause the control target to operate.