87-008145-03 PARKER 伺服驱动器 用来控制伺服电机的一种控制器

87-008145-03

Servo driver is also known as “servo controller”, “servo amplifier”, the working principle is used to control the servo motor of a controller, its role is similar to the frequency converter acting on the ordinary AC motor, belongs to a part of the servo system, mainly used in high precision positioning system. Generally, the servo motor is controlled by position, speed and torque in three ways to achieve high precision positioning of the transmission system. At present, it is a high-end product of transmission technology.

Is driven by amplifying the pulse signal issued by plc?

Instead of simple amplification, the PLC output is only square wave, and the driver output is sine wave. PLC pulse can be understood as the work instructions of the servo drive, like the leadership of the work instructions, servo drive is to the leadership of the work of the secretary, the leadership requires the secretary to do so, the specific how to do or to use their own brains. Servo driver, can be understood as an AC power supply to meet the servo motor work, it drives the servo motor, not directly to PLC pulse simple amplification but to understand what these pulses do, and then through PWM mode simulation output sine wave to control the servo motor work.

General PLC pulse, is PLS pulse, is the pulse width and interval is fixed square wave, the number of this square wave, can be understood as “step”, is a pulse down, the servo motor to take a “step” (is to rotate how much Angle), so the number of pulse square wave, the servo motor rotation Angle for more, Therefore, the servo driver needs to output the waveform that can make the servo motor rotate at many angles. However, the servo motor cannot be simply completed by the motor structure like the stepper motor. It needs a position loop to do the closed loop, that is, the pulse of the encoder is used to measure the change of the current motor Angle, and then the output voltage and output frequency are adjusted by PID.