Description
SM140/30/210/P1/45/M1/B1 Motor parameter settings
SM140/30/210/P1/45/M1/B1 Motor parameter settings
Module Clips Drive controller servo moto
SM140/30/210/P1/45/M1/B1A motor is a device that converts electrical energy into mechanical energy. SM140/30/210/P1/45/M1/B1 It utilizes an energized coil (i.e. stator winding) to generate a rotating
magnetic field and act on the rotor (such as a squirrel cage closed aluminum frame) to form a magneto electric rotational torque. Electric motors are divided into DC
motors and AC motors according to the different power sources used. Most of the motors in the power system are AC motors, SM140/30/210/P1/45/M1/B1 which can be synchronous motors or
asynchronous motors (the stator magnetic field speed of the motor does not maintain synchronous speed with the rotor rotation speed). An electric motor is mainly
composed of a stator and a rotor, SM140/30/210/P1/45/M1/B1 and the direction of the force acting on the energized wire in the magnetic field is related to the direction of the current and the direction
of the magnetic induction line (magnetic field direction). SM140/30/210/P1/45/M1/B1 The working principle of an electric motor is that the magnetic field exerts a force on the current, causing the motor to rotate.
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According to the three-phase power supply of the inverter, it can be divided into square wave control and sine wave control. The square wave control strategy is simple, and the control process is direct and effective. It adopts a six-step commutation strategy. The CPU modulates the PWM to drive the power switch tube to generate a three-phase power supply that can run the motor. The control strategy of sine wave is relatively complex, but the control effect is much better.
In sine wave control, there are two main control strategies.
One is direct torque control DTC Baidu Encyclopedia. The method is to calculate the estimated values of motor flux and torque based on the measured motor voltage and current. After controlling the torque, the motor speed can also be controlled. Direct torque control is a patent of the European ABB company. .
The second is, space vector control FOC Baidu Encyclopedia. Its essence is to equate an AC motor to a DC motor, and independently control the speed and magnetic field components. By controlling the rotor flux linkage, and then decomposing the stator current, the two components of torque and magnetic field are obtained. After coordinate transformation, the normal motor is realized. handover or decoupling control.
During sine wave control, there are many derived more sophisticated control strategies, such as feedforward control, maximum torque control, field weakening control, etc.
In the process of controlling the motor, there are multiple feedback control loops. When controlling the output of the motor, there is a current loop; on this basis, there is a control loop that controls the speed; when a servo motor is used, there is a position loop control.
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4.15 days free replacement for quality problems
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