步进电机的单片机控制外文翻译

附录2：英文资料及其中文翻译

Stepper motor is an electrical pulse will be converted into angular displacement of the implement ing agencies. Put it in simple language-speaking: When the stepper drive pulse signal to a receiv er, it drives stepper motor rotation direction by setting a fixed point of view (and the step ang le). You can control the number of pulses to control the amount of angular displacement, so as to achieve the purpose of accurate positioning; At the same time, you can by controlling the pulse frequency to control the motor rotation speed and acceleration, so as to achieve the purpose of s peed.

Stepper motor directly from the AC-DC power supply, and must use special equipment - stepper moto r drive. Stepper motor drive system performance, in addition to their own performance with the mo tor on the outside, but also to a large extent depend on the drive is good or bad. A typical step per motor drive system is operated by the stepper motor controller, stepper motor drives and step per motor body is composed of three parts. Stepper motor controller stepper pulse and direction s ignal, each made of a pulse, stepper motor-driven stepper motor drives a rotor rotating step angl e, that is, step-by-step further. High or low speed stepper motor, or speed, or deceleration, sta rt or stop pulses are entirely dependent on whether the level or frequency. Decide the direction of the signal controller stepper motor clockwise or counterclockwise rotation. Typically, the ste pper motor drive circuit from the logic control, power driver circuit, protection circuit and pow er components. Stepper motor drive controller, once received from the direction of the signal and step pulse, the control circuit on a pre-determined way of the electrical power-phase stepper mo tor excitation windings of the conduction or cut-off signal. Control circuit output signal power is low, can not provide the necessary stepping motor output power, the need for power amplifier, which is stepper motor driven power drive part. Power stepper motor drive circuit to control the input current winding to form a space for rotating magnetic field excitation, the rotor-driven mo vement. Protection circuit in the event of short circuit, overload, overheating, such as failure to stop the rapid drive and motor.

Motor is usually for the permanent magnet rotor, when the current flows through the stator windin gs, the stator windings produce a magnetic field vector. The magnetic field will lead to a rotor angle of rotation, making a pair of rotor and stator magnetic field direction of the magnetic fie ld direction. When the stator rotating magnetic field vector from a different angle. Also as the rotor magnetic field to a point of view. An electrical pulse for each input, the motor rotation a ngle step. Its output and input of the angular displacement is proportional to the pulses, with p ulse frequency proportional to speed. Power to change the order of winding, the electrical will b e reversed. We can, therefore, control the pulse number, frequency and electrical power windings of each phase to control the order of rotation of stepper motor.

Stepper motor types:

Permanent magnet (PM). Magnetic generally two-phase stepper, torque and are smaller and generally stepping angle of 7.5 degrees or 15 degrees; put more wind for air-conditioning.

Reactive (VR), the domestic general called BF, have a common three-phase reaction, step angle of 1.5 degrees; also have five-phase reaction. Noise, no torque has been set at a large number of ou t.

Hybrid (HB), common two-phase hybrid, five-phase hybrid, three-phase hybrid, four-phase hybrid, t wo-phase can be common with the four-phase drive, five-phase three-phase must be used with their drives;