【正文】 Reaction Stepper Motor Reaction is generally threephase stepping motor can achieve high torque output, step angle of degrees is generally, but the noise and vibration are large. Reaction by the stepper motor rotor magic circuit made of soft magic materials, a number of the stator phase excitation winding, the use of permeability changes in torque. Step Motor simple structure, low production costs, step angle is small。s a small step angle, contribute a large, dynamic performance, is currently the highest performance stepper motor. It is also sometimes referred to as Permanent Mag Induction Stepping Motor. It consists of two phases and the fivephase: the general twophase step angle of degrees and the general fivephase step angle degrees. The most widely used Stepper Motor. Stepper motor drive for energy saving Threephase stepper motor drive special features: ■ 180% low torque output, low frequency characteristics of a good run ■ Maximum output frequency 600Hz, highspeed motor control ■ full range of detection of protection (over voltage, under voltage, overload) instantaneous power failure restart ■ acceleration, deceleration, such as dynamic change in the stall protection function to prevent ■ Electrical dynamic parameters of automatic recognition function to ensure stability and accuracy of the system ■ quick response and highspeed shutdown ■ abundant and flexible input and output interface and control, versatility ■ use of SMT production and three fullmount antipaint treatment process, product stability and high ■ full range of Siemens IGBT power devices using the latest, to ensure the quality of highquality Basic principles Usually for the permanent mag rotor motor, when current flows through the stator windings, the stator windings produce a magic field vector. The magic field will lead to a rotor angle of the magic field makes the direction of a rotor and the stator39。and the tooth 5 is relatively homogeneous, (A39。s expansion plan: 2, rotation: If the Aphase power, B, C phase is not energized, the magic field, alignment of teeth 1 and A, (without any power of the rotor are the same the following). Such as the Bphase power, A, C phase is not energized, gear 2, and B should be aligned, when the rotor over to the right 1 / 3 て , this time offset teeth 3 and C 1 / 3 て , teeth 4 and A shift (て 1 / 3 te) = 2 / 3 て . Such as the Cphase power, A, B phase is not energized, gear 3, and C should be aligned, this time right off the rotor Youxiang 1 / 3 て , 4 and A gear shift time is 1 / 3 て alignment. Such as the Aphase power, B, C phase is not energized, 4 and Aaligned teeth, the rotor Youxiang right over 1 / 3 て so after A, B, C, A are energized, gear 4 (ie, the previous tooth 1 teeth) to the Aphase, rotor to the right around a pitch, if you continue to press the A, B, C, A ... ... power, the motor for each step (per pulse) 1 / 3 て , Rotate Right. Such as by A, C, B, A ... ... power, the motor to reverse. This shows that: the location and speed of motor conduction times by the (number of pulses) and frequency into one relationship. The direction determined by the conductivity of the order. However, out of torque, smooth, noise and reduce the angle considerations. Often with AABBBCCCAA this conductive state, so that each step the original 1 / 3 て changed to 1 / 6 て . Even through different binations of twophase current, so 1 / 3 て into 1 / 12 て , 1 / 24, te, which is the basic theory of the motordriven basis for subdivision. Easily introduced: m phase on the stator excitation windings, the axis of the rotor tooth axis were offset 1 / m, 2 / m ... ... (m1) / m, 1. And conductivity at a certain phase sequence reversing motor can be controlled this is the rotation of the physical conditions. As long as we meet this condition can theoretically create any phase stepper motor, because of cost, and many other considerations, the market generally two, three, four, fivephase is more. 3, the torque: the motor once energized, will produce between the stator and rotor magic field (magic flux Ф) when the rotor and stator stagger angle to produce force F and (dФ / dθ) is proportional to S the magic flux Ф = Br * S Br for the flux density, F and S for the magic area of L * D * Br core is proportional to L, effective length, D is rotor diameter Br = N ? I / RN ? I was excited winding ampere turns (current x turns) R for the magic resistance. Torque = force * radius of the torque and the motor turns the effective volume * An * is proportional to the flux density (only consider the linear state), therefore, the greater the effective volume of the motor, the greater the excitation ampere turns, the smaller air gap between stator and rotor, the motor torque, and vice versa. Induction Stepping Motor 1, features: Induction, pared with the traditional reactive, structural reinforced with a permanent mag rotor, in order to provide the working point of soft magic materials, and the