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步进电机是一种最常用的数一模转换元件,它能将电脉冲信号转换为直线位移或角位移,在规定的工作条件下,其位移量与输入脉冲数成一定的比例关系,且在时间上与输入脉冲严格同步,能够简便而准确地控制运动速度和位移量,因而在数控加工设备中应用较广。尤其在造船厂,无论是数控切割机、数控绘图机,还是数控螺旋桨加工机,凡是采用开环控制的系统,步进电机的应用是必不可少的。在数字随动系统中,步进电机作为最简单的零阶保持器,也获得了广泛的应用。步进电机由相应的脉冲分配器经功放电路驱动。实践表明,功放电路对整机的可靠性和稳定性来说,是一个很重要的环节,其中尤以功
Stepper motor is one of the most commonly used digital-to-analog converter, it can convert electrical pulse signal into linear displacement or angular displacement, under certain operating conditions, the displacement and the number of input pulses into a certain proportion, and Strict synchronization in time with the input pulse, can easily and accurately control the movement speed and displacement, and thus widely used in CNC machining equipment. Especially in the shipyard, whether it is CNC cutting machine, CNC plotter, or CNC propeller processing machine, usually open-loop control system, the application of stepper motor is essential. In the digital servo system, stepping motor as the simplest zero-order retainer, but also has been widely used. Stepper motor by the corresponding pulse distributor driven by the amplifier circuit. Practice shows that the power amplifier circuit on the reliability and stability of the machine, is a very important part, especially in the power