Stepper motor stepper motor drives the development of skills, from originally from abroad to domestic now the emergence of a variety of excellent skills, be able to see the progress of domestic skills, also to see innovative updates to bring together the high-end skills to carry out the leading market innovation. The electronic the rapid development of skills and computer skills and also grows, demand for stepper motor can say are used in all walks of life stepper motor. Where have a stepper motor, there is a stepper motor drives. 1. Constant voltage driver single voltage driver is refers to in the process of motor winding operation, use only one direction for winding the power supply voltage, alternate with winding of supply voltage. The method is a kind of older drivers, basic need not now. Use this kind of drive, short circuit, less component, control also briefly, finish up relatively brief. But it is necessary to supply enough current triode to processing, stepper motor operation speed is low, the motor sensation is bigger, fever. 2. There are many defects, high and low voltage driver because of constant voltage driver for the further development of skills, the development of new high and low voltage driver to improve the constant voltage driver part defects, the principle of high and low voltage driver is that the step motor movement to the whole of time using the high pressure control, in the sports to a half step when using low pressure control, stops by using low pressure to operate. High and low voltage control in must extent, improved the sensation and noise, and for the first time, the author puts forward the concept of subdivided control stepping motor, also put forward together to stop the current form of halving assignments. But a relatively constant voltage driver circuit is complex, frequency characteristic of triode demand improvement, motor still sensation is larger at low speed, fever is still relatively large, now basically do not use this kind of drive. 3. Self-excited constant current chopper driver autonomous operation principle of the constant current chopper driver is a hardware planning when the current reaches a certain value after hardware in its current closed, and then converted to electricity, another winding another winding electric current to a fixed time, can through the hardware will be closed again, repeat, and promote the stepper motor operation. This greatly reduce noise, speed must be degree progress, features than the previous two have surely progress. But for circuit programming request is higher, the circuit resistance to disturb demand is higher, easy to cause the high frequency, burn out driving element, the element function requirement is higher. 4. Current comparison chopper drive current chopping driver is the stepper motor winding current value into must be proportional voltage, and the comparison to the D/A converter output preset, compare the results to the purpose of the control winding current. The drive way to make the move to imitate the characteristics of sine wave, greatly progressive function, movement speed and noise is small, can use high subdivision, was a popular way to control. This circuit is more complex, however, for trouble is difficult to control in the circuit theory and consistent requirements, simple produce jitter, in handling a sine wave peaks and troughs, simple result in high frequency, causing the driving element fever perhaps because of the high frequency aging, this is also a lot of drive using more than 1 year time simple appear the main reason for the red light protection. 5. Dive into type driving it's a new movement control skill, this ability is to compare the chopping current at the time under the premise of driving skills, overcome defects during the vision of a new drive way. Is its core skills in current chopping driver under the premise of increasing the driving element heating and high frequency protection skills. But the price is quite high, at present each stepper motor and driver matching requirement is relatively harsh.
