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A hydraulic cylinder displacement digital servo control system and control method

A technology of digital control and control system, applied in hydraulic cylinder displacement electro-hydraulic servo control, valve-controlled hydraulic cylinder displacement digital servo control system and control field, to achieve the effects of improved response speed, strong resistance to load disturbance and simple structure

Active Publication Date: 2018-12-14
CHANGSHU ZHAOSHI HUADA DYEING & FINISHING
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The general feedback control method widely used today can no longer meet the requirements, and the adoption of new control methods is the problem to be solved to further improve the performance of the hydraulic cylinder displacement electro-hydraulic servo system

Method used

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  • A hydraulic cylinder displacement digital servo control system and control method
  • A hydraulic cylinder displacement digital servo control system and control method
  • A hydraulic cylinder displacement digital servo control system and control method

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Embodiment Construction

[0043] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0044] like figure 1 Shown is the hydraulic cylinder displacement digital servo control system of the embodiment of the present invention. This control system is made up of digital control computer 110, digital / analog conversion module 120, servo amplifier 130, servo object 140, hydraulic pressure source 150, photoelectric encoder 160 and high-speed counter module 170; The output end of 141 is connected in series with hydraulic cylinder 142 and mechanical load 142 to form, and the output end of said digital control computer 110 is connected in series with said digital / analog conversion module ...

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Abstract

The invention discloses a hydraulic cylinder displacement digital servo control system, the system comprises a digital control computer, and a digital-to-analog conversion module, a servo amplifier, a servo object, a hydraulic source, an optical-electricity encoder and a high-speed counter module; the servo object is formed by connecting the output end of an electro-hydraulic servo valve, the hydraulic cylinder and a mechanical load in series, the output end of the digital control computer is connected with the digital-to-analog conversion module and the servo amplifier in series and is connected with the input end of the electro-hydraulic servo valve, the electro-hydraulic servo valve is also connected with the hydraulic source, and the output end of the mechanical load is connected with the optical-electricity encoder and the high-speed counter module in series in sequence and is connected with the input end of the digital control computer. According to the invention, the mounting is simple, the cost is saved, the system is fast in response and is non-overshooting, and the system has extremely strong anti-disturbance performance. The invention also discloses a hydraulic cylinder displacement digital servo control method.

Description

technical field [0001] The invention belongs to the technical field of mechanical precision control, and relates to a hydraulic cylinder displacement electro-hydraulic servo control, more specifically, to a valve-controlled hydraulic cylinder displacement digital servo control system with strong resistance to load disturbances realized by a digital control computer and control methods. Background technique [0002] At present, the precise control of the displacement of the hydraulic cylinder must adopt a closed-loop feedback control method to obtain better control accuracy. The traditional control method is to perform proportional control (P control) and proportional control on the error signal between the input and output in the forward channel. Plus integral control (PI control), proportional plus integral plus differential control (PID control) operations to generate displacement control signals, thus providing precise adjustment for hydraulic cylinder displacement contro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/414
CPCG05B19/414G05B2219/34013
Inventor 朱鹏程王丽娟崔健波李红王伟缪鑫
Owner CHANGSHU ZHAOSHI HUADA DYEING & FINISHING
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