步进电机知识 毕业论文外文翻译.pdfVIP

本科毕业论文翻译 步进电机知识 KNOWLEDGE OF THE STPPER MOTOR 学院（部）： 电气与信息工程学院 专业班级： 电气08-5班 学生姓名： 指导教师： 2012 年 6 月 1 日 KNOWLEDGE OF THE STPPER MOTOR What is a stepper motor ？ Stepper motor is a kind of electrical pulses into angular displacement of the implementing agency. Popular little lesson: When the driver receives a step pulse signal, it will drive a stepper motor to set the direction of rotation at a fixed angle (and the step angle). You can control the number of pulses to control the angular displacement, so as to achieve accurate positioning purposes; the same time you can control the pulse frequency to control the motor rotation speed and acceleration, to achieve speed control purposes. What kinds of stepper motor sub? In three stepper motors: permanent magnet (PM), reactive (VR) and hybrid (HB) permanent magnet stepper usually two-phase, torque, and smaller, step angle of 7.5 degrees or the general 15 degrees; reaction step is generally three-phase, can achieve high torque output, step angle of 1.5 degrees is generally, but the noise and vibration are large. 80 countries in Europe and America have been eliminated; hybrid stepper is a mix of permanent magnet and reactive advantages. It consists of two phases and the five-phase: two-phase step angle of 1.8 degrees while the general five-phase step angle of 0.72 degrees generally. The most widely used Stepper Motor. What is to keep the torque (HOLDING TORQUE) ? Holding torque (HOLDING TORQUE) is the stepper motor power but no rotation, the stator locked rotor torque. It is the stepper motor one of the most important parameters, usually when the stepper motor torque at low speed near the holding torque. As the stepper motors output torque i