A parallel fault-tolerant system of multiple DC motors and a fault-tolerant control method

A DC motor, fault-tolerant control technology, applied in DC motor speed/torque control, control of multiple DC motors, speed regulation of multiple motors, etc., can solve problems such as industrial productivity decline

Active Publication Date: 2021-08-20
江苏恒鑫润翔机电制造有限公司
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  • Claims
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Problems solved by technology

Since various faults will occur during the operation of the motor, resulting in a decline in industrial productivity, the fault-tolerant control of multi-motor coordination has become an important research content

Method used

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  • A parallel fault-tolerant system of multiple DC motors and a fault-tolerant control method
  • A parallel fault-tolerant system of multiple DC motors and a fault-tolerant control method
  • A parallel fault-tolerant system of multiple DC motors and a fault-tolerant control method

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Embodiment Construction

[0063] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

[0064] see figure 2 , the present invention provides a multi-DC motor parallel fault-tolerant system, including n PI controllers, reference current calculation units, (n+1) current hysteresis comparison controllers, PWM pulse generation units, (n+1) phase A voltage source inverter, n parallel DC motors and a motor fault detection ...

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Abstract

The invention discloses a multi-DC motor parallel fault-tolerant system and a fault-tolerant control method. The speed obtained by the position sensor under the action of the rotational speed calculation unit is fed back to the speed adjustment module, and the current of the motor obtained by the current detection sensor is under the action of the motor fault detection signal. The current value obtained by the current calculation unit is fed back to the current regulation module; the reference speed and the feedback speed signal are obtained under the action of the speed comparator to obtain the speed error and the current is obtained through the PI controller; then the reference current is obtained under the action of the motor fault detection signal; The current value of the motor current signal is obtained under the action of the motor fault detection signal; the current error is obtained by the reference current and current under the action of the current comparator, and the duty ratio is obtained through the hysteresis control comparator; and then controlled by the PWM pulse generation unit The on-off pulse control signal of the switching tube in the (n+1) phase inverter. The invention ensures efficient and stable operation of the motor and improves industrial production efficiency.

Description

technical field [0001] The invention belongs to the technical field of motor control, and in particular relates to a multi-DC motor parallel fault-tolerant system and a fault-tolerant control method. Background technique [0002] In order to improve industrial production efficiency and reduce energy consumption, the idea of ​​multi-motor cooperative work is proposed. Since various faults will occur during the operation of the motor, resulting in a decline in industrial productivity, the fault-tolerant control of multi-motor coordination has become an important research content. The present invention is based on PI controller, PWM pulse unit, inverter, etc. In order to ensure the safe, stable and continuous operation of the motor and speed up the production progress of the product, a fault-tolerant control scheme is designed when the motor fails. This scheme can reduce the error with the expected value, Realize the stable operation of the motor and ensure the reliability of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P5/46H02P5/50H02P5/68H02P7/281
CPCH02P5/46H02P5/50H02P5/68H02P7/281H02P7/2815
Inventor 林海刘家毓杨盼盼左磊
Owner 江苏恒鑫润翔机电制造有限公司
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