Stepper motor stepper motor is to convert electric pulse excitation signal to control the discrete values of the corresponding angular displacement or linear displacement motor, the motor whenever enter an electrical impulses move one step, so also known as the pulse motor. Today is to talk about the static torque of stepping motor and holding torque what's the difference? Has a said rotor under external load torque, at the same time will be affected by an electromagnetic torque and load balancing, the rotor will rotate at the same time certain Angle, called the imbalance Angle. The electromagnetic torque is called static torque, static torque and imbalance Angle relationship is called torque Angle characteristics, is a continuous sinusoidal relations. That mean, that is, no matter how small the load torque effect to the rotor, the rotor will rotate an Angle, even if it is still a little bit. But there are holding torque of the step motor is not a concept, holding torque is refers to the stepper motor power but no turns, locked rotor torque of the stator. It is one of the most important parameters of step motor, stepping motor at low speed torque close holding torque. As a result of the stepper motor output torque along with the increase of speed and continuous attenuation, the output power also along with the increase of speed change, so keep the torque has become a measure of stepper motor is one of the most important parameters. For example, for example, when people say 2 n. M of stepper motor, in the absence of special instructions refers to holding torque is 2 n. M the stepper motor. Keep mean, torque motor to keep the rotor moment of stillness, less than the load effect of the torque, the rotor will not exercise, only is greater than the holding torque sports, said that there has been no load, motor current, current what (time, since no load, take what to balance and maintain torque. So the smaller the stepper motor speed, the higher torque, but under a certain speed of its torque is constant, more than will be blocked.
