Abstract : The suspended motion control system is a motor control system that controls an object to move in a straight line, circle, or track within an 80cm×100cm area, and displays the coordinates of the moving object during movement. This system uses an SPCE061A microcontroller as the core of the control system, achieving precise measurement of the suspended object's position through a photoelectric encoder, and introducing a local closed-loop feedback control loop to correct errors. During track tracking, wireless data transmission feedback replaces wired feedback, avoiding control errors caused by cable traction. The system uses a dot-matrix LCD and a touch screen to achieve a user-friendly human-machine interface. Keywords : Suspended motion control system; SPCE061A microcontroller; reflective photoelectric sensor; DC motor I. System Function and Structure 1.1 System Function This system is a motor control system where the controlled object moves on an inclined (elevation angle ≤ 100 degrees) board. Two pulleys are fixed on a white base plate, and two motors (fixed to the board) control the movement of an object on the board via ropes passing through the pulleys, with a movement range of 80cm×100cm. The object has no shape restrictions and a mass greater than 100 grams. A light-colored marker is fixed to the object so that its motion trajectory can be drawn on the board. Light-colored coordinate lines (different from the marker color) are marked on the board at 1cm intervals, with the lower left corner as the origin of the rectangular coordinate system, as shown in Figure 1. (Full text download of the design of the suspension motion control system is available.)