Step-by-step electric motor is the ring opening gating element changing electricity pulse signal into angular displacement or line displacement. Under the situation of must overload, the electric motor rotation rate , discontinuous location depend on pulse signal frequency and pulse number only , make free from being loaded with the effect changing but, be to add a pulse signal for electric motor, the electric motor had rotated a step spur angle then. This gleam of the sexual relationships existence, adds step-by-step electric motor characteristics such as only having the cyclicity error but there being no accumulative error. Feasible simplicity controlling a field using step-by-step electric motor to come to control changeable extraordinary in speed, location etc.



步進電機是將電脈沖信號轉(zhuǎn)變?yōu)榻俏灰苹蚓€位移的開環(huán)控制元件。在非超載的情況下，電機的轉(zhuǎn)速、停止的位置只取決于脈沖信號的頻率和脈沖數(shù)，而不受負載變化的影響，即給電機加一個脈沖信號，電機則轉(zhuǎn)過一個步距角。這一線性關(guān)系的存在，加上步進電機只有周期性的誤差而無累積誤差等特點。使得在速度、位置等控制領(lǐng)域用步進電機來控制變的非常的簡單。