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Control method of feed forward, feedback control system for interferential and time delayed stable system

A technology for feedback control systems and stable systems, applied in general control systems, adaptive control, control/regulation systems, etc., can solve problems such as unfavorable optimization and adjustment, inability to stabilize the system, and unsuitable time-delay objects

Inactive Publication Date: 2007-07-25
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

Its shortcoming is that although it has achieved a good control effect in overcoming load disturbance, it is not suitable for objects with obvious time lag, and even cannot stabilize the system, and there is a serious coupling between the given value response and the load disturbance response It is not conducive to optimize the adjustment separately, which greatly limits the practical application of this method

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  • Control method of feed forward, feedback control system for interferential and time delayed stable system
  • Control method of feed forward, feedback control system for interferential and time delayed stable system
  • Control method of feed forward, feedback control system for interferential and time delayed stable system

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Embodiment

[0025] The control method proposed by the present invention is applied to the motor servo control system of the test device of a certain precision processing equipment. The experimental motor adopts an AC motor, and the moving part is supported by an air-floating guide rail, and the friction has little influence. The experimental motor adopts Bolder's PMLSM and supporting drivers. The length of the mover is 256mm, the length of the stator is 731.52mm, the continuous thrust of the motor is 30kg, the peak thrust is 90kg, the mass of the mover is 2.4kg, and the pole distance is 60.9mm. The actual position of the PMLSM is measured by a grating ruler with a resolution of 0.1μm, and the servo cycle of the main control computer is 0.11ms. In the experiment, the stroke of the motor is 200mm, the moving speed in the constant speed section is 50mm / s, the acceleration in the acceleration and deceleration section is 0.4g, and the nominal load of the motor is 5kg. Before the system enters ...

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Abstract

A method for designing feedforward-feedback control system of interference and time lag unstable unit includes designing a two-freedom control structure to realize decoupling of set-value response and disturbance response based on augmented least square method and according transfer function matrix identification model and relevant requirements, designing two regulation factors of track control by utilizing robust control theory, designing feedforward controller according to anti-interference requirement and using particle filtering method to eliminate interference for realizing asymptotic track of system.

Description

technical field [0001] The invention relates to a control method of a feedforward-feedback control system, in particular to a control method of a feedforward-feedback control system for an unstable system with disturbance and time delay, and belongs to the technical field of industrial process control. Background technique [0002] In the industrial production process, the control object always has disturbance and pure hysteresis instability. It takes a certain amount of time for the controlled quantity to deviate from the given value from the disturbance effect to the system, and it takes a certain amount of time from the change of the controlled quantity to the change of the controlled quantity. It will take some time. Therefore, in the negative feedback control system, it takes quite a long time from the generation of the disturbance to the return of the controlled quantity to the given required value. In the industrial application environment, due to external interferen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
Inventor 王永山胡明慧黎华邵惠鹤
Owner SHANGHAI JIAO TONG UNIV
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