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Device and method for improving synchronous control accuracy of servo system of dual-axis direct drive platform

A servo system and synchronous control technology, applied in the field of numerical control, to improve the ability to process data, avoid high-frequency oscillations, and improve positioning accuracy

Active Publication Date: 2021-06-29
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above goals are a great challenge to the CNC equipment using the two-axis direct drive platform as the core component, so higher requirements are put forward for its control method

Method used

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  • Device and method for improving synchronous control accuracy of servo system of dual-axis direct drive platform
  • Device and method for improving synchronous control accuracy of servo system of dual-axis direct drive platform
  • Device and method for improving synchronous control accuracy of servo system of dual-axis direct drive platform

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Embodiment Construction

[0095] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0096] On the one hand, the present invention provides a device for improving the synchronous control accuracy of the dual-axis direct-drive platform servo system, such as figure 1 As shown, it includes a power supply module, a DSP processor module, a detection module, a first IPM isolation protection drive circuit, a second IPM isolation protection drive circuit, a dual-axis platform, and a host computer module;

[0097] The power module includes a three-phase AC power supply, a rectification circuit and an IPM inverter circuit; the rectification circuit is used as the input end of the entire control device to receive the signal of the final motion position of the permanent magnet linear synchronous motor given by the user, The input terminal of the rectifier circuit is connected to the three-phase AC power supply, which converts the chan...

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Abstract

The invention provides a device and method for improving the synchronous control precision of a servo system of a two-axis direct drive platform, and relates to the technical field of numerical control. The device includes a power supply module, a DSP processor module, a detection module, an IPM isolation protection drive circuit, a host computer and a permanent magnet linear synchronous motor; the present invention utilizes a cross-coupling iterative learning controller to realize dual-axis synchronous control; through model feedforward control Compensate the parameter uncertainty of the system to improve the response speed of the system; then, the adaptive jerk controller is used to suppress the uncertain factors such as external disturbance and friction in the system, and the adaptive law makes the robust gain converge within a bounded range , to improve the robustness of the system; the output signal of the adaptive jerk controller is integrated to form a feedback control law, which weakens the high-frequency resonance caused by the unmodeled dynamics of the switching function in the control law and ensures the stability of the control signal And continuity, improve the machining accuracy of the servo system.

Description

technical field [0001] The invention relates to the technical field of numerical control, in particular to a device and method for improving the synchronous control accuracy of a servo system of a two-axis direct drive platform. Background technique [0002] With the rapid development and wide application of information technology, biotechnology, new material technology, laser and lithography technology, the manufacturing industry is undergoing tremendous changes. Frontier issues such as digital manufacturing, green manufacturing, micro-nano manufacturing, and intelligent manufacturing have become an important part of my country's comprehensive promotion of the implementation of the strategy of manufacturing a powerful country. The resulting emerging technology industries have put forward higher requirements for the precision and efficiency of manufacturing, making high-precision machining the mainstream development direction in the current high-end manufacturing field. Fac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/05H02P21/12H02P25/064H02P27/08
CPCH02P21/05H02P21/12H02P27/08H02P25/064
Inventor 赵希梅原浩宫义山付东学张丽萍
Owner SHENYANG POLYTECHNIC UNIV
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