Development of Multi-axis Motion Control System for SPECT

摘要

In view of the multi-degree-of-freedom movement characteristics of SPECT, a distributed multi-axis motion control system based on fieldbus was developed. The multi-axis synchronous motion control function was achieved by using CANopen-based motion control technology. A double light curtain measurement method was adopted for the realization of human body contour tracking. The 3D virtual model of SPECT was established by using VRML technology. Combined with the sensor parameters of motion control system, the virtual model can reflect the equipment movement attitude in real time. The host PC communicates with the motion controller via Modbus/TCP protocol. Experiments show that the multi-axis motion control system can meet the SPECT imaging motion requirements.