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.
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3511 Pulse Input Module| Triconex | 3515
3504E Digital input module | Triconex | 3503E
3009 Main processor | Triconex | 3009
3008 Main Processor | Triconex | 3008
VE4001S5T2B4 16 Channels Input Card | DeltaV
VE4001S3T2B2 8 Channels Input Card | DeltaV
VE4001S3T2B1 8 Channels Input Card | DeltaV
VE4001S3T1B2 8 Channels Input Card | DeltaV
VE4001S3T1B1 8 Channels Input Card | DeltaV
VE4001S2T2B5 32 Channels Input Card | DeltaV
VE4001S2T2B4 Discrete Input Card | DeltaV
VE4001S2T2B3 Discrete Input Card | DeltaV
VE4001S2T2B2 Fused I/O Termination Block | DeltaV
VE4001S2T2B1 Standard I/O Termination Block | DeltaV
VE4001S2T2 Discrete Input Card | DeltaV
VE4001S2T1B3 Discrete Input Card | DeltaV
VE4001S2T1B2 Discrete Input Card | DeltaV
VE4001S2T1B1 Discrete Input module | DeltaV
VE3051C0 Power controller carrier | DeltaV
VE3008 MQ Controller | DeltaV
VE3006 MD-PLUS controller | DeltaV
VE3007 MX Controller | DeltaV
VE3005 Controller MD | DeltaV
VE3004 MD Controller | DeltaV
VE3002 Controller Module | DeltaV
SE4005S2B2 8 channels AO Card | DeltaV
SE4005S2B1 8 channels AO Card | DeltaV
SE4003S2B1 8 channels AI Card | DeltaV
SE4002S1T2B1 8 channels DO Card | DeltaV
SE4002S1T1B2 8 channels Discrete Output Card | DeltaV
SE4002S1T1B1 8 channels DO Card | DeltaV
SE4001S2T2B1 Traditional I/O | DeltaV
SE3008 SQ controller | DeltaV
SE3007 SX controller || DeltaV
SE3006 controller | DeltaV
KJ3002X1-BB1 AO, 8-Channel, 4-20 mA Card | DeltaV
KJ3002X1-BA1 8-Channel HART Card || DeltaV
KJ3001X1-BK1 Input module | DeltaV
KJ3001X1-BH1 8 channel output module || DeltaV
KJ3001X1-BG1 DO, 8-Channel, 24 VDC, Isolated Card | DeltaV
KJ3001X1-BD1 Dry contact module || DeltaV
KJ3001X1-BB1 Input module | DeltaV
KJ3001X1-BA1 DI, 8-Channel, 24 VDC, Isolated Card | DeltaV
KJ2201X1-BA1 Logic Solver – SLS 1508 || DeltaV
KJ2101X1-BA1 I/O interface card | DeltaV
KJ2004X1-BA1 Remote interface unit || DeltaV
KJ2002X1-BA1 Controller M3 module | DeltaV
KJ2001X1-BA1 controller | DeltaV
KJ1501X1-BC1 SYSTEM POWER SUPPLY | DeltaV
KJ1502X1-BB2 System power supply || DeltaV
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