Doubt the speed of the step motor
Do not set too high the speed of the step motor. The maximum speed of a different step motor is different. The same stepper motor is different in different load situations, depending on the instruction manual of the step motor.
Stepper motor speed is proportional to the pulse frequency, the pulse frequency, the higher the stepper motor speed also, but increases the pulse frequency although reached the acceleration effect, has lost moment. The reason for the decrease of the moment with the increase of pulse frequency: The two reasons for stepping into the motor are: One, the control pulse frequency is high, the acceleration of the rotor is less than the speed with which the motor stator spins the magnetic field. The stepper motor power supply design, the stator coil electric time constant is basic fixed, assumes that the time constant is 0.02 S (0.02 S charging to a maximum of 63%), if the stepper motor to accept pulse cycle is greater than 0.04 S (duty ratio is 50%, the frequency is less than 25 hz), of the stator coil which can gain enough energy to produce enough to drive the rotor torque. If the pulse frequency is too high, such as 50 hz (duty ratio is 50%, more than 0.02 S) pulse cycle, the stator coil for the charging time of just 0.01 S, about half of charging time, the torque is reduced a lot, the rotor can't keep up with the speed of the stator rotating magnetic field, each step behind the equilibrium position should be arrived, and farther and farther away from the equilibrium position. The accumulated result is a lost step. 50 hz frequency is too small, of course, this example is just for illustration purposes, casual said a number of solutions: 1, to reduce the pulse frequency, don't think that trouble, most debugging step motor is the process of adjusting the pulse frequency
Different motor and drive the performance of different, depending on your application occasions, in the case of no-load, 42 57 motor up to 2000 RPM is not completely not possible, but this time, the force is so small, 24 v power supply 57 motor racing would be reached around 0.01 NM, 48 v power supply 57 motor racing can reach about 0.03 NM, more than just refer to my company's motor,
Hi, there are many different kinds of steps in the motor. Berger lahr stepper motor such as Germany, he rated speed 3500 r/min, don't believe, but the price is high, prices are much higher than domestic servo motor, berger lahr is grasp quality regardless of price. Speed: 35, 39, 42, these three series of stepper motor is due to the inertia small, the torque is small, so the speed is usually in the 300-500 turn, 42 can reach about 600. 57, 86, 110, all three of the motor speed can reach 2000 r (just motor idling, without any load, because there is almost no effort at this speed motor, a hand grasp stop), effective speed motor and strength of the case, namely the three motor speed almost at about 600-1200. Our company's electric motor is the step motor of the thunder race, I do the test at ordinary times, the speed is also as mentioned above
