CEFR驱动机构的电机采用步进电机,直接接收数字信号,电机转速与控制脉冲频率有严格对应关系,其位移与输入脉冲数成正比,运动方向取决于脉冲的加入顺序,这使它适用于反应堆棒控系统的数字化控制。因此,采用PLC(可编程控制器)进行CEFR棒控系统的试验研究。系统硬件分别选用了三菱 CEFR drive motor uses a stepper motor to directly receive digital signals, the motor speed and the control pulse frequency has a strict correspondence, the displacement is proportional to the number of input pulses, the movement direction depends on the order of the pulse, which makes it suitable for the reactor Digital control of stick control system. Therefore, the use of PLC (programmable logic controller) for CEFR rod control system of experimental research. System hardware were selected Mitsubishi