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Analyze the step motor 'how to set up the stepping motor subdivision? 》

by:Zhenyu     2020-10-31
Stepper motor is a kind of induction motor, its working principle is the use of electronic circuit, direct current (dc) into time-sharing power supply, multiphase sequential control current, in this current for stepper motor power supply, step motor to work properly, is time-sharing power supply for step motor drive, multiphase timing controller. Stepper motor is a kind of controlled electrical pulse, pulse frequency to determine the speed of motor running. And segmentation is achieved by precise control stepping motor phase current of the driver.

1. What kinds of stepper motor points and types

what kind of stepping motor points and type stepping motor in three kinds: permanent magnet ( PM) , equation ( VR) And hybrid ( HB) 。 Permanent magnet stepping, generally for two phase, torque and volume is small, step Angle is commonly 7. 5 or 15 degrees; Reactive step for three-phase commonly, can achieve high torque output, stepper Angle generally to 1. 5 degrees, but the noise and vibration are very big. In Europe and the United States and other developed countries have been eliminated in the 80 s; Hybrid stepping refers to a mixture of permanent magnet and the advantages of reactive. It is divided into two and five phase: two phase stepper Angle generally to 1. 8 degrees and five phase stepping Angle generally is 0. 72 degrees. The application of the stepper motor is more widely.

2. Stepper motor type classification and braking principle of stepping motor of the

also known as pulse planetary gear motor, stepping motor based on the basic principle of electromagnet, it is a free swing electromagnet, its action principle is depend on the change of the air gap permeance to produce electromagnetic torque. The original model is originated in the years to years. Before and after the year began to try to control for the purpose of, applied to the electrode in the transportation agency of hydrogen arc lamp. This is considered to be the initial step motor. In the early 20th century, on the phone automatically switches are widely used in the stepper motor. Because of the western capitalist powers for the colony, stepper motor ships and planes in the absence of ac power independence has been widely used in the system. In the late 1950 s the invention of the transistor is gradually applied in stepper motor, for the digital control more easily. In the eighty s, due to cheap, with the attitude of multi-functional microcomputer stepping motor control method is more flexible.

3. 。 Stepper motor relative to other control USES the difference between the

stepper motor relative to other control USES the biggest difference is that it receives the electrical pulse signal into digital control signal and the corresponding angular displacement or linear displacement, it itself is a complete digital model of actuators. And it can be open loop position control, input get a pulse signal on a specified position increment, the so-called incremental position control system compared with the traditional dc control system, significantly reduce its cost, almost don't have to make adjustment system. Amount of angular displacement of stepper motor is proportional to the input pulse number of strictly, and synchronization with pulse on time. So as long as the number of control pulse, frequency and phase sequence of the motor winding, can achieve the desired Angle. 。 。

4. 。 Single-chip microcomputer and stepping motor subdivision control

single-chip stepper motor and stepping motor subdivision control 1 stepper motor is pure digital control motor, it will be electrical pulse signal into angular displacement, namely to a pulse, stepper motor turns a point of view, therefore very suitable single-chip microcomputer control, in the case of the overload, motor speed, stop position depends only on the pulse signal frequency and pulse number, and not affected by load change, step motor is turning a pitch Angle, and stepping motor only periodically without cumulative error, high precision.

5. Step motor has the following characteristics of

1) Speed can be adjust smoothly in a fairly wide scope, can still be achieved under the low speed large torque, so usually don't have to drive and direct drive load.

2) Stepper motor can only be run through the pulse power supply, can not directly use the ac power and dc power supply.

3) Angular displacement of stepper motor is proportional to the input pulse number strictly. Therefore, when it is on a business trip, no accumulated error, good to follow.

4) Composed of stepping motor and drive circuit, ring opening nc system is simple, cheap, and very reliable, at the same time, it can also with the Angle of feedback loop closed loop nc system with high performance.

5) Stepper motor is oscillation and out-of-step phenomenon, must to take measures to control system and mechanical load. Stepper motor and the mechanical structure with simple, the advantages of this kind of step motor can be used as a four phase motor, also can be used as a two-phase planetary gear motor, using the flexible.

6) Stepper motor dynamic response is fast, easy to stop, and reversing and speed.
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