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A linear motor control method with backstepping control and ESO

A technology of a linear motor and a control method, which is applied in the control of generators, motor-generators, and electromechanical brakes, etc., can solve problems such as poor anti-interference performance.

Active Publication Date: 2020-11-17
XIAN UNIV OF TECH
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Problems solved by technology

[0003] The purpose of the present invention is to provide a linear motor control method with backstep control and ESO, which solves the problem of poor anti-interference performance in the prior art

Method used

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  • A linear motor control method with backstepping control and ESO
  • A linear motor control method with backstepping control and ESO
  • A linear motor control method with backstepping control and ESO

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Embodiment Construction

[0099] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0100] A linear motor control method based on backstepping control and ESO, the system structure is as follows: figure 1 As shown, the mathematical model of the permanent magnet synchronous linear motor is established by the stator current equation and the rotor flux equation of the permanent magnet synchronous linear motor, and the extended state observer is designed for the multi-source external interference, respectively through the input of position, speed and current and The feedback error designs the respective backstepping control rules of the three loops.

[0101] The linear motor control method of backstep control and ESO adopts vector control system, and the system adopts backstep controller to form a closed-loop AC speed regulation system with speed and current feedback control, and the feedback current i a i b i c After Clark t...

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Abstract

The invention discloses a linear motor control method of employing backstepping control cooperative with an ESO. The control method specifically comprises the following steps of firstly, establishinga mathematical model of a permanent magnet synchronous linear motor through a stator current equation and a rotor flux equation of the permanent magnet synchronous linear motor; secondly, designing the extended state observer (ESO) for multisource external interference; and finally designing respective backstepping control rules of three loops through position, speed and current input and a feedback error. The linear motor control method of employing backstepping control cooperative with the ESO is high in anti-jamming capability, the influences on a motion system caused by the factors, such as parameter variations, noise and frictional force can be significantly improved, the control accuracy is improved and the system obtains relatively good dynamic characteristics.

Description

technical field [0001] The invention belongs to the technical field of permanent magnet synchronous linear motor control, and in particular relates to a linear motor control method with backstep control and ESO. Background technique [0002] Many control systems in daily life and industrial production are in the form of linear motion, but the power source driving this linear motion is usually provided by a rotating motor and some transmission mechanisms. This not only greatly reduces the output efficiency of the motor, but also makes it difficult to improve the stability of the system and the improvement of control accuracy due to the complexity of the control system structure. Compared with rotary motors, linear motors show more obvious advantages in the field of linear drive. Its unique structure omits the intermediate transmission mechanism, making the control system simpler, and the thrust output and control are more direct, and the output torque Larger, more efficient ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/13H02P25/064
CPCH02P21/13H02P25/064
Inventor 尹忠刚顾宇翔张彦平刘静钟彦儒
Owner XIAN UNIV OF TECH
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