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AC servo system mechanical resonance suppression method and system

A mechanical resonance and AC servo technology, applied in the direction of motor vibration suppression control, observer control, etc., can solve the problems that cannot be changed at will, the degree of improvement is limited, and the viscosity coefficient of the motor and transmission device is difficult to improve, so as to achieve simple configuration, Strong anti-load disturbance and high steady-state accuracy

Active Publication Date: 2021-11-02
GUANGDONG SAMSUN TECH CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, it is difficult to increase the viscosity coefficient between the motor and the transmission device, and the viscosity coefficient between the transmission device and the load; the load inertia ratio is determined by the specific control object and cannot be changed at will; the stiffness of the transmission device can be improved through mechanical design. improved, but only to a limited extent

Method used

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  • AC servo system mechanical resonance suppression method and system
  • AC servo system mechanical resonance suppression method and system
  • AC servo system mechanical resonance suppression method and system

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Embodiment 1

[0057] An embodiment of the present invention provides a method for suppressing mechanical resonance of an AC servo system, including the following steps: S1, establishing a dual-inertia transmission device model; S2, adding an ADRC controller structure to the dual-inertia transmission device model; S3, adding the On the basis of the model of ADRC controller structure described above, load acceleration feedback compensation is added. In the prior art, mechanical resonance suppression can be divided into the following two categories: one is active suppression methods, such as based on PID structure pole configuration, based on observer observation of load speed, load torque, etc., based on model reference adaptive, fuzzy control, Genetic algorithm and other advanced control algorithms, literature (Min Yilong, Wang Ganquan. Resonance Suppression of Three-axis Stabilized Satellite Scanning Mirror Servo System[J]. Control Theory and Application, 2018, 35(9): 1250-1259. DOI: 10.7641...

Embodiment 2

[0106] An embodiment of the present invention provides a mechanical resonance suppression system for an AC servo system, including a dual-inertia transmission device model, an ADRC controller structure added to the dual-inertia transmission device model, and an ADRC controller structure added after the ADRC controller structure is added. Load acceleration feedback structure. Preferably, the dual inertia transmission device model includes a motor, a transmission device and a load, and the transmission device transmits the motion and power of the motor to the load, so as to control the motion of the load to meet the requirements of the system. This embodiment is the same as the first embodiment above, so it will not be repeated here.

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Abstract

The present invention relates to the technical field of AC servo control systems, and provides a method for suppressing mechanical resonance of an AC servo system, comprising the following steps: S1, establishing a dual-inertia transmission device model; S2, adding an ADRC controller structure to the dual-inertia transmission device model ; S3, adding load acceleration feedback compensation on the basis of adding the ADRC controller structure model. Also provided is an AC servo system mechanical resonance suppression system, including a double-inertia transmission device model, an ADRC controller structure added to the double-inertia transmission device model, and a load acceleration added after the ADRC controller structure is added feedback structure. Compared with the traditional PI controller, the improved ADRC can produce a certain suppression effect on the resonance phenomenon, and at the same time can realize the high-speed response and high steady-state precision of the system; the state observer of the ADRC controller structure can observe the state of the system at the same time variables and disturbances that can be removed by adding compensation.

Description

technical field [0001] The invention relates to the technical field of AC servo control systems, in particular to a method and system for suppressing mechanical resonance of an AC servo system. Background technique [0002] The AC servo system with the goal of high speed and high precision has been widely used in high-tech fields such as laser processing, robots, and high-precision machine tools. The precise control of the speed loop can reduce the impact of disturbance on the system, reduce the speed fluctuation, and make the system work in a stable state. Speed ​​loop control is the most widely used control method in the permanent magnet synchronous motor servo system. A good speed loop control can effectively suppress uncertain disturbances in the current loop and speed loop, thereby improving the overall performance of the system. [0003] The suppression of mechanical resonance can be considered from both mechanical and control aspects. From the mechanical aspect, imp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P23/04H02P23/12
CPCH02P23/04H02P23/12
Inventor 卢少武吴波刘婕周凤星马娅婕但峰严保康胡轶宁博文
Owner GUANGDONG SAMSUN TECH CO LTD
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