The main obstacle to the development servo motor
Current international high-precision servo device sensor has been raised to 200 million lines to 400 million lines, and then it is able to match the existing mechanisms to achieve nanometer-level control. Our domestic control can guarantee that the domestic high-speed synchronous sampling digital communication protocol we adopted is necessary to solve the problem. Servo motor own High-precision control problems must be solved. FANUC emphasizes HRV (High Response Vector control), Mitsubishi stressed OMR (optimal mechanical response of control) are directed at high-precision servo control problem of the core issues - high precision, fast response of the current loop design. Only good current loop characteristics can provide perfect performance for the good speed control and position control.
many control techniques can make a difference in resolving this contradiction, including state recognition, control, and variable parameter control synovium and so on. To realize High precision control, only rely on the controller and servo drive is not enough. Motor design itself is an important factor in the effect of motion control. For permanent magnet synchronous servo electrical motor, a good positive spin of EMF, cogging force very little low-speed servo drives will be benefit to achieve smooth control.
