Stepper motor is a kind of used to manipulate with special motor, its rotation is based on a fixed point of view,Known as' interval Angle)One step one step operation, its characteristic is not piled up error (Accuracy of 100%), so widely used in all kinds of open loop control. Stepper motor homework to one electronic device drivers, the device is a stepper motor drives, announced that it is the control system of the pulse signal into angular displacement of stepper motor, or: each send a pulse signal control system, after makes the stepper motor drive from the Angle of rotation step. So the speed of the stepper motor is proportional to the pulse signal frequency. So, the manipulation of the stepping pulse signal frequency, accurate to motor speed control; Manipulation of the stepping pulse number, can accurate positioning on the motor. After subdivision stepper motor drives the drive, the interval Angle becomes the drive operation in 10 segments, where the step Angle for step motor inherent from the Angle of 'one over ten, namely said: 'when a drive homework when step don't segment of the whole situation, each hair a step pulse control system, rolling 1. 8°; With subdivision driver operation in 10 segments, motor rolling only 0. 18 °, which is the basic concept of subdivision. Segment function is completely produced by controlled by accurately, the drive motor phase current, has nothing to do with the motor. Drive after segmentation of the primary advantages as: eliminate the low frequency oscillation of the motor. Low frequency oscillation is a stepper motor (Especially the reactive motor)The intrinsic characteristics of, and the segmentation is to eliminate its path, only if your stepper motor to work in the resonance region (sometimesSuch as arc), choose segmentation is one of the selected drive. Progress in the output torque of the motor. Especially for three-phase reactive motor, the torque progress about 30 - than when not subdivided40%. Advances in the resolution of the motor. Steps for reducing the elongation, the progress of uniformity, the resolution of the motors' progress 'is obvious. Above is the basic principle of stepper motor, next, about stepping motor drive plan, the selection of actual combat experience summarized: choose insist on torque (HOLDINGTORQUE)Insist on torque is also called static moment, refers to the stepper motor power but no scroll, locked rotor torque of the stator. Because of the stepper motor torque when working close to adhere to the torque at low speed, and the stepper motor torque following speed rapid attenuation increases, the output power also changes along with the increase of speed, so stick to the torque is measured step motor load can be one of the most important parameters. For example, generally do not add to clarify about 1 n. M stepper motor, and can be understood as adhere to the torque is 1 n. m。 Choose low phase number two phase stepper motor, step away from the Angle of at least 1. 8 degrees, when low speed, the sensation is larger, the moment when falling fast, suitable for high speed and the precision and smoothness of the occasion of demand is not high; Three-phase stepper motor step Angle of at least 1. 5 degrees, oscillation is smaller than two phase stepper motor, function better than that of two phase stepping motor at low speed, maximum speed is higher than two phase stepper motor thirty percent to 50, suitable for high speed and high demand for precision and smoothness of occasions; Five phase stepper motor step Angle smaller, function better than three phase stepper motor at low speed, but the capital is on the high side, is suitable for low period and higher demand for precision and smoothness of occasions. Choose stepper motor should follow the rule of first to choose after motor drive, first clear load characteristic, after comparing different types of stepper motor frequency static torque and torque curve, find and load characteristics of the stepper motor to match; Precision demand is high, should choose mechanical reduction device, so that the motor operation in the power of the highest, lowest noise condition; Keep the motor operation in the oscillation, if must be voltage, current, or been modified to increase the damping of the solution; The power supply voltage, dc 24 v - 57 motor selection36 v, 86 motor selection 46 v dc, 110 motor selection is higher than the dc 80 v; Larger in the rolling inertia load should be selected frame size motor; Large inertia load, high operation speed, motor and worked her way up frequency speed should be chosen, to avoid stalling of step motor loss, reduce noise, progress of positioning accuracy; In view of the stepper motor torque generally under 40 nm, beyond the torque scale, and operating speed is greater than 1000 RPM, which should be thinking about selection of stepper motor, stepper motor can be normal operation in general communication 3000 RPM, dc stepper motor cocoa normal operation at 10000 RPM. Choose stepper motor drives, and fine fraction step had better not choose the whole situation, because the whole step condition of oscillation is larger; As far as possible choose low current, large inductance and low voltage drives; With greater than operating current drive, when need low vibration or high precision subdivision drive type, about big torque motor with high voltage type drive, to achieve good high speed function; Practical use in motor speed is generally higher, and the situation of high demand for precision and stability is not, don't have to choose the high fine fraction drive, in order to save money; Practical use in motor speed under the condition of very low commonly, should choose larger fine fraction, to ensure the smooth operation, cutting vibration and noise; Therefore, when choosing the fine fraction, should be comprehensive thinking practice operation speed, load torque of the motor size, speed reducer Settings, accuracy requirements, vibration and noise, etc. the main products: stepper motor, brushless motor, servo motor, stepping motor drive, brake motor, linear motor and other kinds of models of the stepper motor, welcome to inquire. 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