NEWS AND INFORMATION
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The basic structure of the motor driverThe basic circuit structure of the stepper motor driver is shown in the figure. The stepper motor does not move when connected directly to AC or DC power supply and must be used simultaneously with the drive circuit to perform its function. The driver (drive circuit) consists of a control circuit (or logic circuit) that determines the commutation sequence and a commutation circuit (or power stage) that controls the output power of the motor, the details of which are described in a later chapter. The pulse generator generates the command pulse. When the stepper motor is running at a certain speed, as long as the continuous pulse of a certain frequency is generated, the total rotation Angle, stop position, acceleration, uniform speed, deceleration and other variable speed processes of the stepper motor can be determined. Because the pulse generator can control the pulse frequency, it is also called the controller. In the 1970s, the stepper motor was also called a pulse motor, which was called because the input instruction of the motor was a pulse signal or the motor winding current was a pulse current. The name of the stepper motor comes from the output action of the rotor, that is, the relationship between the rotating motion of the rotor step by step. |
