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 IISACO1
Display operation panel IISAC01
Display operation panel IISAC01
Display operation panel IIPLM01
Display operation panel IIMTM01
Display operation panel IIMSM01
Display operation panel IIMRM02
Display operation panel IIMRM01
Display operation panel IIMPM02
Display operation panel IIMPM01
Display operation panel IIMLM01
Display operation panel IIMKM02A
Display operation panel IIMKM02
Display operation panel IIMKM01A
Display operation panel IIMKM01
Display operation panel IIMGC04
Display operation panel IIMGC03
Display operation panel IIMGC02
Display operation panel IIMGC01
Display operation panel IIMCP02
Display operation panel IIMCP01
Display operation panel IIMCL01
Display operation panel IIEDI01
Display operation panel IIAMS01
Display operation panel IIADP02
Display operation panel IIADP01
Display operation panel IEPWM02
Display operation panel IEPU02
Display operation panel IEPRD01
Display operation panel IEPMU01
Display operation panel IEPEP07
Display operation panel IEPEP04
Display operation panel IEPEP03
Display operation panel IEPEP01
Display operation panel IEPDS02
Display operation panel IEPDS01
Display operation panel IEPDP01
Display operation panel IEPBM01
Display operation panel IEPAS02
Display operation panel IEPAS02
Display operation panel IEPAS01
Display operation panel IEPAS01
Display operation panel IEPAF02
Display operation panel IEPAF01
Display operation panel IEMMU22
Display operation panel IEMMU21
Display operation panel IEMMU21
Display operation panel IEMMU21
Display operation panel IEMMU21
Display operation panel IEMMU12
Display operation panel IEMMU11
Display operation panel IEMMU04
Display operation panel IEMMU02
Display operation panel IEMMU01
Display operation panel IEMMU01
Display operation panel IEFAN90
Display operation panel IEFAN02
Display operation panel IEFAN01
Display operation panel IDPG 940128102
Display operation panel ICST08A9
Display operation panel ICSK20F1
Display operation panel ICSE08B5
Display operation panel ICSE08B5
Display operation panel ICSA04B5
Display operation panel IBA 940143201
Display operation panel IAM MODULE
Display operation panel HVC-02B 3HNA024966-00103
Display operation panel HVC-02 3HNA011999-001
Display operation panel HVC-01 2A 3HNA008270-001
Display operation panel HPC800K02
Display operation panel HIES207036R003
Display operation panel HIER466665R0099
Reviews
There are no reviews yet.