# The difference between stepping motor and deceleration motor

by：V&T Technologies     2020-01-18
Before answering this question, let's first understand what stepping motor and gear motor are. Stepping Motor is a kind of open-loop control element stepping motor, which converts electrical pulse signal into angular displacement or linear displacement. Under the condition of no overload, the speed and stop position of the motor depend on the frequency and number of pulses of the pulse signal and have nothing to do with the load change. When the stepping driver receives the pulse signal, it will drive the stepping motor to rotate. Fixed angle in set direction, for'Step angle', Which rotates step by step at a fixed angle. The angular displacement can be controlled by controlling the number of pulses to realize accurate positioning; Control the pulse frequency to control the speed and acceleration of the motor rotation, thus achieving the purpose of speed regulation. The geared motor consists of a reducer (Gearbox)Motor composition. The motor has high speed, but the torque is small and the inertia is large. The function of the reducer is to reduce the rotating speed, increase the torque, reduce the inertia and achieve the ideal rotating speed and torque; For example, there are electric curtains and electric shutters, all of which use geared motors, with slow speed and large torque. In short, stepping motors can control fixed length and fixed speed. For example, the Workbench can be set to 1 m and the speed can be set freely. A common application case is the stepping motor of milling machine. The difference is that the stepper motor can be fixed speed, timing (How long to go, how fast to set); The speed of the reducer is determined by the reduction ratio, and the speed cannot be adjusted; However, the stepping motor torque is small and the gear motor torque is large. The stepping motor can be controlled at a fixed length. For example, the Workbench travels 1 meter at a speed of 500R/MIN, while the gear motor cannot. If it is a three-phase asynchronous gear motor, it will slow down through the gear box, but the speed is not well adjusted. It is necessary to adjust the speed through the frequency converter. I can't say how much I want. The function of the stepping motor needs to be realized (Fixed length speed regulation)And the inverter and encoder are used together. In addition, the power of the gear motor is large, and the total force of the stepping motor is not very large. Stepping gears can be very strong. TAG stepping motor
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