Predictive control method, device and system for precision hydrostatic guide rail

A hydrostatic guideway and predictive control technology, applied in fluid pressure actuation devices, special data processing applications, instruments, etc., can solve the problems of complex and variable control of processing loads, lag, etc., to facilitate intelligent control and eliminate response Hysteresis, control the effect of low energy consumption

Inactive Publication Date: 2018-02-09
CENT SOUTH UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the defects of control hysteresis caused by complex and changeable processing loads in the prior art and the inherent damping characteristics of the guide rail hydraulic system, the present invention provides a predictive control method, device and system for precision hydrostatic guide rails

Method used

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  • Predictive control method, device and system for precision hydrostatic guide rail
  • Predictive control method, device and system for precision hydrostatic guide rail
  • Predictive control method, device and system for precision hydrostatic guide rail

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Embodiment Construction

[0036] The specific embodiments of the invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0037] figure 1 It shows a schematic flowchart of a predictive control method for a precision hydrostatic guide rail provided by an embodiment of the present invention, including the following steps:

[0038] S1: Simulate the processing load information of the slide plate through the CAM control system, and obtain the cutting force of each oil chamber according to the processing load information.

[0039] Under the background of precision numerical control machining technology, the CAM control system that pre-plans the toolpath path according to the initial and final parameters of the workpiece and the numerical control (NC) program has come out, and the relationship between...

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Abstract

The invention discloses a predictive control method, device and system of a precision hydrostatic guide rail. The method includes: simulating the processing load information of a sliding plate through a computer-aided manufacturing control system, and obtaining the processing load information of each oil chamber according to the processing load information. Cutting force; output a control signal according to the cutting force of each oil chamber and the preset slide plate fluctuation; according to the control signal, control the oil flow through the electro-hydraulic proportional pressure regulating valve, and then control the oil The oil pressure of the cavity can counteract the force of the foreseen processing load on the slide plate and compensate the fluctuation of the oil film thickness. By adopting the predictive control method, the magnitude and change of the processing load are calculated in advance, and the pressure of the oil chamber is adjusted in advance, which completely eliminates the problem of response lag, and can effectively reduce the fluctuation of the slide plate under the action of the dynamic processing load, making the transmission accuracy of the guide rail more accurate. high.

Description

technical field [0001] The invention relates to the field of electromechanical-hydraulic integration of machine tools, in particular to a predictive control method, device and system for a precision hydrostatic guide rail. Background technique [0002] Precision machining technology is an important support for a manufacturing power. Ultra-precision machine tools, as the basis for precision machining, have always been a hot spot in the country's medium- and long-term scientific research planning. With the advantages of high rigidity, low wear, and precise operation, hydrostatic guideways quickly become the basic components shared by ultra-precision CNC machine tools. However, due to the constant change of the cutting load during the machining process, the force balance of the slide plate of the static pressure guide rail is destroyed, resulting in fluctuations in the relative position between the slide plate and the slideway of the guide rail, and changing the ideal positiona...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00F15B13/02
Inventor 胡均平胡骞刘成沛王琴
Owner CENT SOUTH UNIV
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