Stepper motor which good _ two phase four-wire stepping motor trip
stepper motor driver is a kind of electrical pulses into angular displacement of the actuator. When stepping drive receives a pulse signal, it drives stepper motor according to set the direction of a fixed point ( Called & other; Interval Angle & throughout; ) , its rotation is based on the Angle of the fixed step by step. Stepper motor is the electrical pulse signal into angular displacement or linear displacement of open loop control motor, is a modern digital process, the main components of control system, has extensive application. 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, when the stepper driver receives a pulse signal, it is driving a stepper motor according to set the direction of a fixed point of view, called & other; Interval Angle & throughout; , its rotation is based on the Angle of the fixed step by step. Can be controlled by controlling the pulse number of angular displacement, so as to achieve the purpose of accurate positioning; As well as by controlling the pulse frequency to control planetary gear motor rotation speed and acceleration, so as to achieve the purpose of regulating.
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. We used in the rotor permanent magnet is the same with high magnetic properties of rare earth permanent magnet, so on the rotor of the induced current in the rotor magnetic field ( Definition: transfer physical interaction between magnetic field) The influence of negligible. On the structure, it is equivalent to a multipolar logarithmic ac permanent magnet synchronous motor.
since entered is three-phase sinusoidal current, the resulting space magnetic field assumes the circular distribution, and can use the structure model of permanent magnet synchronous motor ( See the figure) Analysis of the three-phase hybrid stepping motor torque characteristics. For convenience of analysis, can make the assumption that the motor stator ( : the stator core, stator windings and the frame) Three-phase winding is completely symmetrical; Magnetic saturation, eddy current, Also known as: foucault current) And the core loss is neglected; No dynamic response process of exciting current.
three-phase hybrid stepping motor is the three-phase winding connection in star or a triangle, according to the basic circuit theorem, the sum of three-phase alternating current is zero. The iU + + iV iW = 0. So usually need to produce two phase winding of a given signal, the third phase winding of a given signal can be obtained by the other two phase. Also, only need to the corresponding two phase winding current actual samples, the third phase winding of the actual current can be obtained according to the type.
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