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On-line identification and control method for parameter of alternating current position servo system model

A model parameter, servo system technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve problems such as difficult implementation, high hardware requirements of control system, and complex design.

Active Publication Date: 2012-02-15
常州固高智能装备技术研究院有限公司
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  • Application Information

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Problems solved by technology

The third is the position adaptive control algorithm, which is different from the second method in that parameter identification and controller modification are carried out continuously during the operation of the control system. more demanding

Method used

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  • On-line identification and control method for parameter of alternating current position servo system model
  • On-line identification and control method for parameter of alternating current position servo system model
  • On-line identification and control method for parameter of alternating current position servo system model

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] figure 1 middle Indicates the mathematical model of the controlled object of the AC servo system, J and B are the model parameters of the controlled object of the AC servo system, the moment of inertia and the viscous damping coefficient, K p +K d s is the position controller, θ_ref is the position control input reference signal of the system, and ω_ref is the external reference signal for identification input. The mathematical model of the controlled object is expressed by a first-order differential equation as Where ω is the system output speed, u is the speed loop input.

[0026] figure 2 middle J ( k ) - J ( k - 1 ...

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Abstract

The invention discloses an on-line identification and control method for a parameter of an alternating current position servo system model. According to the invention, a model reference adaptive identification algorithm based on a Lyapunov stability theory is utilized; and on-line identification is carried out on a rotary inertia J and a viscous damping coefficient B of a controlled object of an alternating current servo system; after convergence is carried out on an identification parameter, an on-line design on a position controller is carried out according to J and B values and the design is automatically switched to position control. According to the invention, an efficiency on an alternating current servo system design can be substantially improved.

Description

technical field [0001] The invention relates to an AC permanent magnet synchronous motor servo system, in particular to an online identification and control method for model parameters of an AC position servo system, and belongs to the technical field of synchronous motors. Background technique [0002] After a new AC servo system is established, many system parameters are unknown, and the controller parameters of the control system are designed according to the model parameters of the system. In addition, in many control problems, the object-oriented is usually uncertain, and the change of the workload will lead to the change of the parameters of the servo system model. Therefore, a high-performance AC servo system not only requires the system to respond quickly and accurately to servo commands, but also requires that the system still have good control performance when the load characteristics change, which requires the control of the servo system The parameters of the inv...

Claims

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Application Information

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IPC IPC(8): G05B13/04
Inventor 李向国刘向红梅志千
Owner 常州固高智能装备技术研究院有限公司
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