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Self-adaptive hybrid control method for magnetic levitation electric main shaft

A magnetic levitation electric spindle and hybrid control technology, applied in the field of CNC machine tools, can solve problems such as inability to respond in time to track and control the rotor

Active Publication Date: 2020-04-24
CHANGZHOU INST OF TECH
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  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide an adaptive hybrid control method for a magnetic levitation electric spindle, which solves the technical problem that the traditional control algorithm cannot respond in time to track and control the rotor

Method used

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  • Self-adaptive hybrid control method for magnetic levitation electric main shaft
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  • Self-adaptive hybrid control method for magnetic levitation electric main shaft

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Embodiment Construction

[0036] like Figure 1-Figure 4 A method for self-adaptive hybrid control of a magnetic levitation electric spindle is shown, including the following steps:

[0037] Step 1: Establish a model analysis module and a controller module. The model analysis module is deployed in the host computer, and the controller module is used to control the magnetic levitation electric spindle of the CNC machine tool;

[0038] Step 2: Establish the working condition vibration model, coupling vibration model and machine tool foundation vibration model of the magnetic levitation electric spindle in the model analysis module;

[0039] The system vibration model is established according to the dynamic relationship between the working condition vibration model, coupled vibration model and machine tool foundation vibration model;

[0040] Step 3: Obtain the real-time vibration data of the workpiece or tool table controlling the CNC machine tool according to the system vibration model;

[0041] Wheth...

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Abstract

The invention discloses a self-adaptive hybrid control method for a magnetic levitation electric main shaft. The self-adaptive hybrid control method belongs to the technical field of numerically-controlled machine tools, and comprises the steps of: establishing a model analysis module and a controller module; establishing a working condition vibration model, a coupling vibration model and a machine tool basic vibration model of the magnetic levitation electric main shaft in the model analysis module; and establishing a parameter self-correction fuzzy controller, a PID controller, a displacement feedforward compensation controller and a real-time switching controller in the controller module. The self-adaptive hybrid control method solves the technical problem that a traditional control algorithm cannot respond to, track and control a rotor in time, proposes a magnetic levitation electric main shaft parameter self-correction fuzzy control strategy, studies the self-adaptive capability and the parameter online correction effect of the fuzzy controller, improves the robust stability of a magnetic levitation electric main shaft system, proposes a multi-mode self-adaptive hybrid controlstrategy based on combination of parameter self-correction fuzzy control, classic PID control and unbalanced displacement feedforward compensation control, and solves the stability problem of the proposed multi-mode adaptive hybrid control strategy.

Description

technical field [0001] The invention belongs to the technical field of numerical control machine tools, and relates to an adaptive hybrid control method for a magnetic levitation electric spindle. Background technique [0002] In 1976, the French SEP company and the Swedish SKF bearing company jointly invested and established S2M company, which carried out systematic research and development on the magnetic bearing spindle of ultra-high-speed precision machining machine tools, and developed the world's first high-speed machine tool in 1977. Magnetic levitation spindle. The company first introduced the B20 / 500 magnetic suspension spindle system at the Hanover European International Machine Tool Exhibition in 1981, and performed drilling and milling live performances at a speed of 35kr / min. These high-speed, high-precision, high-efficiency and low-power consumption Excellent performance has aroused widespread concern of experts from various countries. [0003] Although the c...

Claims

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Application Information

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IPC IPC(8): G05B19/404G05B19/414G05B13/04G05B13/02G05B11/42F16C32/04B23Q1/70
CPCB23Q1/70F16C32/0451F16C32/0489G05B11/42G05B13/0275G05B13/042G05B19/404G05B19/414G05B2219/45136
Inventor 朱益利于建英李渊
Owner CHANGZHOU INST OF TECH
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