How does the step motor achieve position control
I have a encoder in the back of the motor, and I have the speed, the position, the moment loop, the step motor
One pulse takes one step. So the number of pulses is going to be in place The size of a step is determined by the step Angle of the motor. If the drive is subdivided, the size of each step is the step Angle/fine fraction
Ha! Ha! If you want an accurate position control it's not just about stepper motor control circuit with you, because of stepper motor step but a common thing and also is a bad deal with problems. This can only be reduced to the lowest level in the control method, if you want to be precise in position control, preferably with a closed-loop scheme. Because the control of this step motor is the product of the number of pulses that are given and the step Angle of this step into the motor to be converted to your actuator. Ha! Ha! Just fear that when resistance is large, you give the pulse but it can't move.
In the control of the step motor, it can be more accurate if handled well. Typically, a step loss occurs when the load is strong, but it can be overcome in certain circumstances: First, it must be enough to choose the step motor power, which is enough torque. 2, the matching of subdivision and rotational speed must be taken into account. 3, the current of the power supply should be sufficient, the current adjustment of the step motor should be more suitable, as far as possible, put in the larger position. Using a controller with a reduced speed control, this can effectively overcome the loss of inertia caused by inertia.
