Electro-hydraulic position servo system capable of quickly inhibiting impact loads and control method of electro-hydraulic position servo system

An electro-hydraulic position servo and impact load technology, which is applied to fluid pressure actuation system components, fluid pressure actuation devices, mechanical equipment, etc., can solve problems such as complex system structure and poor interference, and achieve reduced complexity and dynamic fluctuations. The effect of small amplitude and static difference elimination

Inactive Publication Date: 2011-06-29
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the technical difficulties of the existing electro-hydraulic position servo system in suppressing the interference of high-intensity impact loads and the complex structure of the system, and propose a fast Electro-hydraulic position servo system for suppressing impact load and its control method

Method used

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  • Electro-hydraulic position servo system capable of quickly inhibiting impact loads and control method of electro-hydraulic position servo system
  • Electro-hydraulic position servo system capable of quickly inhibiting impact loads and control method of electro-hydraulic position servo system
  • Electro-hydraulic position servo system capable of quickly inhibiting impact loads and control method of electro-hydraulic position servo system

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Embodiment 1

[0038] Such as Figure 5 As shown, the electro-hydraulic position servo system with fast suppression of impact load in this embodiment includes a hydraulic source 1, two adder-subtractors 2, 14, a controller 3, an electro-hydraulic servo valve 4, a hydraulic cylinder 5, a load 6. Displacement sensor 7, analog-to-digital converter 12, digital-to-analog converter 15 and power amplifier 16, wherein: it also includes a first pressure sensor 8, a second pressure sensor 9, an anti-shock compensator 10 and a second analog-to-digital conversion device 13, the first pressure sensor 8 is arranged in the oil circuit of the high-pressure chamber of the hydraulic cylinder 5, and the second pressure sensor 9 is arranged in the oil circuit of the low-pressure chamber of the hydraulic cylinder 5, and the signals of the first pressure sensor 8 and the second pressure sensor 9 The output end is connected with the signal input end of the second analog-to-digital converter 13, and the signal outp...

Embodiment 2

[0054] Such as Figure 6 As shown, the electro-hydraulic position servo system with fast suppression of impact load in another embodiment of the present invention includes a hydraulic source 1, two adder-subtractors 2, 14, a controller 3, an electro-hydraulic servo valve 4, and a hydraulic cylinder 5. Load 6, displacement sensor 7, analog-to-digital converter 12, digital-to-analog converter 15 and power amplifier 16, wherein: it also includes a first pressure sensor 8, a gravity balance device 17, an anti-shock compensator 10 and a second mold digital converter 13, the first pressure sensor 8 is arranged in the oil circuit of the high-pressure chamber of the hydraulic cylinder 5, the gravity balance device 17 is arranged in the oil circuit of the low-pressure chamber of the hydraulic cylinder 5, the signal output terminal of the first pressure sensor 8 is connected with the second The signal input end of the analog-to-digital converter 13 is connected, the signal output end of...

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Abstract

The invention relates to an electro-hydraulic position servo system capable of quickly inhibiting impact loads and a control method of the electro-hydraulic position servo system. The invention mainly solves the technical difficulty that the existing electro-hydraulic position servo system is poor in high-intensity impact load interference inhibition and complex in system structure. The electro-hydraulic position servo system capable of quickly inhibiting the impact loads comprises a hydraulic source, an adder-subtracter, a controller, an electro-hydraulic servo valve, a hydraulic cylinder, aload, a displacement sensor, an analog-to-digital converter and a power amplifier, and also comprises two pressure sensors, an impact resistance compensator and a second analog-to-digital converter, wherein the two pressure sensors are arranged in oil passages of a high-pressure chamber and a low-pressure chamber of the hydraulic cylinder; output ends of the pressure sensors are connected with input ends of the analog-to-digital converters; output ends of the analog-to-digital converters are connected with an input end of the impact resistance compensator; a signal output end of the impact resistance compensator is connected with an input end of the adder-subtracter; and a signal output end of the adder-subtracter is connected with signal input ends of the analog-to-digital converters.

Description

technical field [0001] The invention relates to an electro-hydraulic position servo system and its control method capable of quickly suppressing impact load, which belongs to a hydraulic servo control system and its control method. Background technique [0002] At present, in the hydraulic servo control system, especially in the electro-hydraulic position servo system, the change of load force will interfere with the control accuracy of the electro-hydraulic position servo system. The system can automatically adjust the opening change of the electro-hydraulic servo valve to achieve timely and accurate control of the load position. However, for impact loads with large values ​​and rapid changes, it is difficult for the electro-hydraulic position servo system to respond to them in a timely manner, resulting in relatively long-term adjustments to the controlled position, which brings a negative impact on the production process where the electro-hydraulic position servo system i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B21/00
Inventor 权龙许小庆
Owner TAIYUAN UNIV OF TECH
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