Answer: Feedback control.
Answer analysis: The servo robot is a feedback control system because it allows feedback signals. This feature enables the servo robot to accurately perform predetermined actions or tasks. Specifically, the working principle of the servo robot includes the following aspects:
1. The role of feedback signals: The servo robot obtains feedback signals of the actual motion state, such as position, speed, acceleration, etc. through sensors and other devices. These feedback signals are compared with the target signals sent by a given device (such as a controller) to calculate the error signal.
2. Processing of error signals: After amplification and other processing, the error signal is used to stimulate the drive device of the servo robot, such as a servo motor. The drive device adjusts the robot's motion state according to the error signal to reduce or eliminate the error.
3. Closed-loop control: The servo robot adopts a closed-loop control method, that is, the output (feedback signal) of the system will in turn affect the input (target signal) to form a closed loop. This control method enables the servo robot to have higher control accuracy and stability.
4. The composition of the servo system: The servo robot usually includes components such as servo motors, servo drives, and controllers.
As an actuator, the servo motor is responsible for converting electrical energy into mechanical energy; the servo drive is responsible for controlling the movement of the servo motor; the controller is responsible for receiving input signals, processing data and issuing control instructions.
5. Application scenarios: Due to the characteristics of high precision, high stability and high flexibility, servo robots are widely used in industrial automation, intelligent manufacturing, aerospace and other fields. They can perform various complex motion tasks, such as precision assembly, handling, welding, etc.
In summary, as a feedback control system, the servo robot adjusts its own motion state by continuously receiving and processing feedback signals, thereby achieving high-precision motion control.