What are the main features of stepping motors?
Some characteristics of stepper motor:1., the accuracy of the general stepper motor is 3-5% of the stepping angle, and does not accumulate.The maximum allowable temperature at the outside of the 2. stepper motor.
The torque of 3. step motor will decrease with the increase of speed.When the stepper motor turns, the inductance of each phase winding of the motor will form a reverse electromotive force; the higher the frequency, the greater the reverse electromotive force. Under its action, the phase current decreases with the increase of frequency (or speed), which leads to the decrease of torque.The 4. step motor can operate normally at low speed, but if it is higher than a certain speed, it can not start and is accompanied by howling.The stepper motor has a technical parameters: no-load starting frequency is the stepper motor to the normal start of the pulse frequency in the no-load condition, if the pulse frequency is higher than the value of the motor does not start, you may lose steps or stall occurs. In the case of load, the starting frequency should be lower. If the motor is to rotate at high speed, the pulse frequency should have an acceleration process, that is, the starting frequency is low, and then a certain acceleration to the desired high frequency (motor speed from low speed to high speed).
Step motor temperature is too high will make the first magneticdemagnetization motor, resulting in loss of torque down even further, so the highest temperature of motor appearance allows should depend on the different demagnetization of magnetic materials motor; generally speaking, the magneticdemagnetization points are above 130 degrees Celsius, some even up to more than 200 degrees Celsius therefore, the stepper motor surface temperature of 80-90 degrees Celsius isnormal.
