采用计算机配备高速数据采集卡PCI-1751、光电编码器和L290/291/292控制电路构成直流伺服电动机控制系统.位置检测由电机减速过程中转过的角度或距离进行估算.运动过程中逐级减速、预留减速距离,从而达到精确的目的.通过数学模型计算和实验测试证明方案可行.系统采用高级语言编程,节省了开发时间,有一定参考价值.%PCI-bus data acquisition & control cards, microcomputer, photoelectric eneoder and L290/291/292 chip's circuit make up of DC servo motor control system. The position control project is esti-mated the angles in motor reducer process. Step-by-step regulation and preformed motor reducer distance is implemented precision fLx position. The project was proved exactitude by mathematical model and ex-periment of DC servo motor. The article introduced the method of system composition, the software was compiled by. High-level language, improved the efficiency of the design.
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