Choose dc motor or stepper motor
See purpose and precision, not high dc, an H circuit, PWM driver OK. It's a little bit more of a simple thing to do when you step into an electric machine, and you're going to have to do it yourself. Select the parameters that are measured by the step Angle and the torque metropolitan area when stepping into the motor.
High precision stepper motor, each pulse can be accurate to 0.72 degree (separated by the drive can be higher), suitable for accurate positioning, and his rotation and input pulse number, only more accurate. Stepper motor price is higher, drive also is more complex, if not accurate positioning, of course choose dc motor, powerful stepper motor is also very rare trouble process (estimates). The power choice of the motor, mainly considering load torque, running speed and so on. Worktable up and down, I use is single-phase ac asynchronous motor is more, speed, simple circuit is not complicated, now a lot of manufacturer production speed regulation system of ac motor is shipped. Dc motors are less used, and power and carbon brushes are two big problems.
You should choose to step into the motor, mostly depending on your use.I hope my answer will help you.
