Stepper motor stepper motor and the difference of other motor mainly must be linked with control pulse stepper motor to run, otherwise you won't work. Stepper motor and control pulse is the most simple operation mode of open loop system, the so-called incremental position control system compared with traditional ac/dc servo system, the cost is decreased obviously, almost don't have to make adjustment system, therefore, as the motion control system, digital applications of stepper motor is becoming more and more widely. Corresponding, national semiconductor manufacturers to develop and produce a lot of suitable for application-specific integrated circuit of stepping motor control. Stepper motor of the static characteristics of the torque characteristics as the most important. Angle precision of the stepper motor with high resolution encoder (via the shaftsNot occur rotating displacement when rotate)As a digital direct connection, Angle, reading a person counter, using computer to calculate. Results through the printer or X-rayY plotter output equipment and so on, as the evaluation data of the machine. Location accuracy: the arbitrary point as the starting point of the rotor, thus every step measurement, continuous rotary motor, and the difference between the actual position and the theory of rotor position. With a positive maximum value and negative maximum range error of the said, called the position error, using basic step elongation percentage (%)To represent. Interval angular accuracy: rotor starting from any point, continuous running, the measured Angle of each step Angle and the step Angle, the difference between the theoretical step with theoretical elongation percentage (%)Said, called interval angular accuracy to 1 in the circle (+)Side with (-)The maximum lateral said. Hysteresis error: rotor by arbitrary point forward after 1 lap, counter-rotating once again return to the origin, the measurement location of most of the deviation Angle of tears, called hysteresis error.
