Stepper motor stepper motor is accomplished by acceptance of pulse current speed, position and direction of control, how many resolution of stepping motor position of the pulse, the pulse of the rotational speed of the motor speed resolution, pulse resolution in the direction of the motor is turning. Now most of the stepper motor control method is to use PLC pulse to drive, drive drive motor work. Pulse pattern method has existed for decades, about some applications requiring high pulse type is now can't meet the need, total lines are needed to control. About the need to employ many motor, for example, many medical devices have twenty or thirty shaft, if using a pulse type is bad handling, six or seven axis can be at most a PLC, a motor requires more than one PC, more requirements for space volume is larger, and most of medical instrument is dainty compact volume, 2 it is much more motor pulse type wiring is difficult, line one more equipment interference problems lead to instability. If using the general linear with respect to need only two signal lines and power cord motor together everything is done, planning and installation is very convenient, there are not many wiring signal interference problems. Some mechanical itself with mainframe computers above, if using pulse type cannot play the usefulness of mainframe computers, may also need a the upper machine movement control CARDS to control stepping motor drive system, and using the general linear can through the computer directly to the host to control, a method of movement control CARDS professional performance, and capital volume and space than the other two methods also big advantage. Some products need to moment in the process of movement forms, for example, some lock screw machine using the torque form, pulse type cannot be current to control and adjust the torque of motor, and the main line will be able to do it. General linear methods related to the pulse type is not only the dainty many volume, the writing of the manipulation of the program will also be related to a brief many PLC ladder program, and also can do the motor current, voltage, temperature, blocked from time to time of reaction, such as current, breakdown changes from time to time, s-shaped deceleration, analog, synchronous instruction and offline manipulation of brief manipulation. In general main line of pulse type, there are many new function characteristics and no lee, main line is the future development direction and trend of stepper motor motion control.
