Description
hardware flow control. It is an ideal choice in the field of industrial automation.
Distinguished according to whether there is a position sensor, first of all, it is divided into sensing
and non-sensing. That is, whether Hall or other similar position sensors are used to sense the
position angle of the stator and rotor. In air pump applications, many use non-inductive control.
The excellent algorithm of through-hole is that after the motor is running, it detects the changes in
phase current to switch the phase current. In some heavy-duty or precise control applications,
sensory methods are used.
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.
Display operation panel DSQC608
Display operation panel DSQC608
Display operation panel DSQC604
Display operation panel DSQC604
Display operation panel DSQC603
Display operation panel DSQC602
Display operation panel DSQC602
Display operation panel DSQC601 3HAC12815-1
Display operation panel DSQC601
Display operation panel DSQC572
Display operation panel DSQC562 3HAC16014-1/05
Display operation panel DSQC546A
Display operation panel DSQC545A 3HAB8101-19/07A
Display operation panel DSQC540
Display operation panel DSQC539 3HAC14265-1
Display operation panel DSQC539
Display operation panel DSQC532B
Display operation panel DSQC518A
Display operation panel DSQC513
Display operation panel DSQC510
Display operation panel DSQC509
Display operation panel DSQC509
Display operation panel DSQC508
Display operation panel DSQC505
Display operation panel DSQC504
Display operation panel DSQC504
Display operation panel DSQC503A
Display operation panel DSQC501
Display operation panel DSQC500 3HAC3616-1/03
Display operation panel DSQC462
Display operation panel DSQC417
Display operation panel DSQC400E
Display operation panel DSQC386
Display operation panel DSQC377B
Display operation panel DSQC377A
Display operation panel DSQC373
Display operation panel DSQC370
Display operation panel DSQC369
Display operation panel DSQC368
Display operation panel DSQC365
Display operation panel DSQC363
Display operation panel DSQC361 3HAC0373-1
Display operation panel DSQC361
Display operation panel DSQC355A
Display operation panel DSQC354
Display operation panel DSQC354
Display operation panel DSQC352B 3HNE00009-1/17
Display operation panel DSQC352B 3HNA016493-00
Display operation panel DSQC352A 3HNE00009-1/11
Display operation panel DSQC352A 3HNE00009-1
Display operation panel DSQC352A
Display operation panel DSQC352 3HNE00009-1/07
Display operation panel DSQC352 3HNE00009-1
Display operation panel DSQC352
Display operation panel DSQC352
Display operation panel DSQC350
Display operation panel DSQC350
Display operation panel DSQC346U 3HAB8101-13/07A
Display operation panel DSQC346U
Display operation panel DSQC346G
Display operation panel DSQC346G
Display operation panel DSQC346E
Display operation panel DSQC346B
Display operation panel DSQC345E
Display operation panel DSQC345E
Display operation panel DSQC345B
Display operation panel DSQC345A
Display operation panel DSQC332A 3HAC17973-1
Display operation panel DSQC332A
Display operation panel DSQC332
Display operation panel DSQC330
Display operation panel DSQC327A 3HAC17971-1/03
Display operation panel DSQC327A 3HAC17970-1
Display operation panel DSQC327A
Display operation panel DSQC327 3HAB7230-1
Display operation panel DSQC326
Display operation panel DSQC324 3HAB5957-1
Display operation panel DSQC323
Display operation panel DSQC322
Display operation panel DSQC322
Display operation panel DSQC321
Display operation panel DSQC320
Display operation panel DSQC318
Display operation panel DSQC317
Display operation panel DSQC316
Reviews
There are no reviews yet.