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JWK系列机床数控系统由数控单元及步进伺服驱动单元组成。数控单元采用MCS-51系列单片微机或TP801单板微机。伺服驱动单元采用高低压电源供电、定电流控制的驱动电路,工作原理是:通过采样电阻检测步进电机绕组的电流,电流上升时,使高压管导通,采用高压驱动;电流上升到预定值时,高压管关断,采用低压驱动,由二极管续流维持绕组的电流。由于高压管多次重复接通与关断,使电机绕组电
JWK series CNC system consists of CNC unit and stepper servo drive unit. CNC unit adopts MCS-51 series single-chip microcomputer or TP801 single-chip microcomputer. The servo drive unit uses high and low voltage power supply, constant current control drive circuit, the working principle is: through the sampling resistor to detect the stepper motor winding current, the current rise, the high-pressure pipe conduction, the use of high-voltage drive; current rose to a predetermined value When the high-pressure pipe off, the use of low-voltage drive, diode freewheeling to maintain the current winding. As the high pressure pipe repeatedly connected and shut off, the motor winding electricity