Linear motor control method of employing backstepping control cooperative with ESO

A technology of backstep control and control method, which is applied in the direction of control of generator, motor generator control, control of electromechanical brake, etc., and can solve problems such as poor anti-interference performance

Active Publication Date: 2018-07-27
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 backst

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  • Linear motor control method of employing backstepping control cooperative with ESO
  • Linear motor control method of employing backstepping control cooperative with ESO
  • Linear motor control method of employing backstepping control cooperative with ESO

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Embodiment Construction

[0100] The present invention will be described in detail below with reference to the drawings and specific embodiments.

[0101] A linear motor control method with backstepping control and ESO figure 1 As shown, the mathematical model of the permanent magnet synchronous linear motor is established through the stator current equation and the rotor flux equation of the permanent magnet synchronous linear motor. The extended state observer is designed for multi-source external interference, and the position, speed and current input and The feedback error designs the respective backstepping control rules of the three loops.

[0102] The linear motor control method of backstepping control and ESO uses a vector control system, and the system uses a backstepping controller to form a closed-loop AC speed control system with feedback control of speed and current, and feedback current i a , I b , I c After Clark transformation, it is converted into the current value i in the stationary two-p...

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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 particularly relates to a linear motor control method of backstepping 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 for driving this form of linear motion is usually provided by a rotating motor and some transmission mechanisms. This not only makes the output efficiency of the motor greatly compromised, but the complexity of the control system structure also brings difficulties to the stability and control accuracy of the system. Compared with rotary motors, linear motors show more obvious advantages in the field of linear drive. It has a unique structure, omitting the intermediate transmission mechanism, making the control system simpler, and the thrust output and control are more direct, and the output torque Larger, higher application ef...

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Application Information

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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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