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 IMDSO01
Display operation panel IMDSM05
Display operation panel IMDSM05
Display operation panel IMDSM04
Display operation panel IMDSM04
Display operation panel IMDSM04
Display operation panel IMDSM04
Display operation panel IMDSM04
Display operation panel IMDSI22-ABX
Display operation panel IMDSI22-ABX
Display operation panel IMDSI22
Display operation panel IMDSI22
Display operation panel IMDSI22
Display operation panel IMDSI22
Display operation panel IMDSI15
Display operation panel IMDSI14
Display operation panel IMDSI14
Display operation panel IMDSI14
Display operation panel IMDSI13
Display operation panel IMDSI13
Display operation panel IMDSI12
Display operation panel IMDSI02
Display operation panel IMDSI02
Display operation panel IMDS014
Display operation panel IMDS014
Display operation panel IMDS004
Display operation panel IMDER02
Display operation panel IMDER01
Display operation panel IMCPM02
Display operation panel IMCPM01
Display operation panel IMCOM04
Display operation panel IMCOM03
Display operation panel IMCKN02
Display operation panel IMCKN01
Display operation panel IMCIS22
Display operation panel IMCIS22
Display operation panel IMCIS22
Display operation panel IMCIS22
Display operation panel IMCIS12
Display operation panel IMCIS02
Display operation panel IMCIS02
Display operation panel IMCIS02
Display operation panel IMBLK01
Display operation panel IMBLK01
Display operation panel IMASO11
Display operation panel IMASO11
Display operation panel IMASO11
Display operation panel IMASO01
Display operation panel IMASM04
Display operation panel IMASM03
Display operation panel IMASM02S
Display operation panel IMASM02
Display operation panel IMASM01
Display operation panel IMASI23
Display operation panel IMASI23
Display operation panel IMASI23
Display operation panel IMASI23
Display operation panel IMASI13
Display operation panel IMASI13
Display operation panel IMASI03
Display operation panel IMASI02S
Display operation panel IMASI02
Display operation panel IMASI02
Display operation panel IMAS113
Display operation panel IMAS011
Display operation panel IMAS011
Display operation panel IMAS001
Display operation panel IMAOM01
Display operation panel IMAMM03
Display operation panel IMAMI01
Display operation panel IKTU02-3
Display operation panel IKTU01-6.6
Display operation panel IKLS01-2.2
Display operation panel IKLM01-5
Display operation panel IKLM01-3
Display operation panel IKAS01-6.4
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