A servo driver is a controller used to control a servo motor. Its function is similar to the inverter on the common AC motor. It's part of the servo system. The power plant generally uses intelligent power module (IPM) as the core of the design of the driver circuit. The IPM integrates the driver circuit and has fault detection and protection circuits such as over voltage, over current, over heat and under voltage. In the main circuit also added a soft start circuit to reduce the impact of the start process on the driver, what are the characteristics of the servo driver?
1. After all the initialization of the servo drive is completed, the main program enters the wait state and waits for the interrupt to occur to adjust the current loop and speed loop.
2. Servo drive initialization mainly includes DSP kernel initialization, current and speed cycle setting, PWM initialization, four M initialization, ADC initialization, QEP initialization, vector and permanent magnet synchronous motor rotor initialization, multi-servo motor phase current sampling, phase current finding, current and speed P adjustment initialization zero offset.
3. The zero pulse capture interrupt program of the photoelectric encoder can realize the accuracy and accurate capture of the feedback zero pulse of the encoder, so as to obtain the correction of the direction Angle of AC permanent magnet synchronous motor vector transformation.
4, the data exchange program mainly includes the communication program with the host, EEPROM parameter reading, digital display program and other parameters to store the keyboard value of the controller.
5. After all the initialization of the servo drive is completed, the main program enters the wait state and waits for the interrupt to occur to adjust the current loop and speed loop.
6, after all the initialization work of the servo drive is completed, the main program enters the wait state, waiting for the interrupt to occur, in order to adjust the current loop and speed loop.
7, the servo driver is mainly used to complete the initialization of the system, the control signal of the LO interface, the register setting of each control module in the DSP, etc.
8, the power driver protection interrupt program is mainly used to detect the fault output of the intelligent power module.