Motion control system of three-coordinate measuring machine and control method thereof

The invention provides a motion control system of a three-coordinate measuring machine. The motion control system comprises a PC, a motion controller, a pulse converter, an X-axis servo driver, a Y-axis servo driver, a Z-axis servo driver, an X-axis servo motor, a Y-axis servo motor, a Z-axis servo motor, the three-coordinate measuring machine, a sensor, a low speed photoelectric coupler, and a high speed photoelectric coupler. The motion controller is connected with the PC, the pulse converter, the low speed photoelectric coupler, and the high speed photoelectric coupler. The pulse converter is connected with the X-axis servo driver, the Y-axis servo driver, and the Z-axis servo driver. A triaxial servo driver is connected with the three-coordinate measuring machine by a triaxial servo motor. The sensor is connected with the X-axis servo motor, the Y-axis servo motor, the Z-axis servo motor, the low speed photoelectric coupler, and the high speed photoelectric coupler. The invention also provides the motion