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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Vibro-meter 204-040-100-011
VM600-ABE040 204-040-100-011
Vibro-meter 204-042-100-011
Vibro-meter VM600-ABE042
VM600-ABE042 204-042-100-011
VIBRO-METER 444-680-000-511
VIBRO-METER 573-935-202C
VIBRO-METER VM600 XMV16
VIBRO-METER 600-003 620-001-001-116
600-003 620-001-001-116 VM600 XMV16
VIBRO-METER VM600 XIO16T
VIBRO-METER 620-003-111-112
VIBRO-METER 620-002-000-113
VIBRO-METER 620-002-000-113 620-003-111-112
620-002-000-113 620-003-111-112 VM600 XIO16T
VIBRO-METER IOCN 200-566-000-112
B&K Vibro VB-430 C002292.01/9100131600
B&K Vibro VB-430
Vibro-meter VM600 MPC4
Vibro-meter 200-510-111-013
Vibro-meter 200-510-017-019
Vibro-meter 200-510-017-019 200-510-111-013
200-510-017-019 200-510-111-013 VM600 MPC4
Vibro-meter 200-560-101-015
Vibro-meter 200-560-000-018
Vibro-meter 200-570-101-013
Vibro-meter 200-570-000-014
Vibro-meter VM600
200-570-000-014 200-570-101-013 VM600
VIBRO-METER VM600 IOC4T
VIBRO-METER 200-560-000-018 200-560-101-015 VM600 IOC4T
HIMA F8620/11
HIMA BV7032-0,5
HIMA BV7046-4
HIMA EABT3 B9302 997009302
HIMA ELOPII
HIMA F3 AIO 8/4 01
HIMA F3 DIO 20/8 02
HIMA F3 DIO 8/8 01
HIMA F3231
HIMA F3236
HIMA F3237 984323702
HIMA F3322
HIMA F3330 984333002
GE IP-QUADRATURE
ABB CPU PCD237
ABB CPU PCD287
HIMA F35
HIMA F6214
HIMA F6215
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