Stepping motor is used under what circumstances? Stepper motor is a kind of as control with special motor, its rotation is a fixed Angle (Called interval Angle)Step by step, its characteristic is no accumulation error, so widely used in all kinds of open loop control. Stepper motor is a kind of electrical pulses into angular displacement of the actuator. Popular point: when the stepper motor driver receives a pulse signal, it is driving a stepper motor according to set the direction of a fixed point (The step Angle)。 Can be controlled by controlling the pulse number of angular displacement, so as to achieve the purpose of accurate positioning; At the same time you can control the pulse frequency to control motor rotation speed and acceleration, so as to achieve the purpose of regulating. So when need accurate positioning or speed regulation control all can consider using a stepper motor. Why the stepper motor torque can follow speed up and down? Stepper motor rotates, the motor of each phase winding inductance will form a reverse electromotive force; The higher the frequency, the greater the back emf. Under the function of it, the motor with frequency (Or speed)The phase current decreases, which leads to torque decline. Why can step motor at low speed in normal operation, but above a certain speed won't be able to start with whistler? Stepper motor has a technical parameters: no-load start frequency, the stepper motor under no-load condition can normal boot pulse frequency, if the pulse frequency is higher than the value, the motor does not start properly, may be lost or blocked. In under the condition of load, start frequency should be to accelerate the process, namely the start frequency is low, and then in a certain high frequency acceleration to want (Motor speed from low speed to high speed)。 No-load start frequency is usually twice the number of required pulse motors a circle. How to overcome the two-phase hybrid stepping motor vibration and noise during low speed? Stepper motor rotates at low speed vibration and noise is its inherent shortcomings, general can adopt the following solutions to overcome: A, such as the stepper motor work on resonant area, through will become A slowdown than raising the speed of the step motor running. B, with the function of subdivision drive, this is the most commonly used, the easiest way. Because of subdivision drive motor phase current change is more gentle half step type. C, interval for smaller stepper motor, such as three-phase or five phase stepper motor, or two phase step motor subdivision type. D, for dc or ac stepper motor, almost completely overcome the vibration and noise, but the cost is higher. E, on the motor shaft, magnetic damper on the market for this product, but the mechanical structure change is bigger. Subdivision stepper motor drives the fine fraction of precision can represent? Stepping motor subdivision technology is essentially an electronic damping technology, its main purpose is to weaken or eliminate the low frequency vibration of step motor, improve the operation precision of the machine is only a supplementary function of subdivision technology. Such as for the stepping Angle of 1. 8 degrees of two-phase hybrid stepper motor, if the fine fraction of subdivision driver set to 4, then the motor running resolution for each pulse 0. 45 degrees, the precision of the machine can achieve or close to zero. 45 degrees, but also on other factors such as subdivision current control precision of the subdivision driver. The subdivision drive precision of different manufacturers may vary widely, the greater the fine fraction the more difficult it is to control precision. 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. Telephone:
