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A dynamic correction device for hydraulic system that can effectively suppress load resonance

A hydraulic system and dynamic correction technology, applied in fluid pressure actuation devices, fluid pressure actuation system testing, servo motor components, etc., can solve problems such as increasing the difficulty of servo valve debugging and increasing the complexity of servo valves, and achieve good results. Hydraulic dynamic damping effect, compact structure and regular shape

Active Publication Date: 2017-05-10
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the servo valve itself is a high-precision electromechanical product. After adding the dynamic pressure feedback function, the complexity of the servo valve is greatly increased, and the debugging difficulty of the servo valve is increased.

Method used

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  • A dynamic correction device for hydraulic system that can effectively suppress load resonance
  • A dynamic correction device for hydraulic system that can effectively suppress load resonance
  • A dynamic correction device for hydraulic system that can effectively suppress load resonance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0061] A hydraulic servo system resonates with the pushed elastic load, and the resonance peak reaches about 5dB. In order to effectively suppress the load resonance peak, a dynamic correction device is designed.

[0062] First, according to the present invention, the housing is 61.5mmX52.5mmX18.5mm. Three parallel holes with a diameter of 6.4 mm are drilled in sequence on the shell. Such as figure 1 As shown, the first hole is a blind hole, which is used for installing the damping hole seat 3, and the diameter of the damping hole is 0.25mm. The second and third holes are both through holes, and the throttle spool and the pressure accumulation spool are installed respectively, and springs 4 with a stiffness of 46N / mm are respectively installed at both ends of the spool. Tighten the plugs 6 on both sides of the pressure accumulation spool, and the stroke of the pressure accumulation spool is about 2mm. During debugging, adjust and adjust the stud 8 to a proper position accor...

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Abstract

The invention relates to a hydraulic system dynamic correction device capable of effectively inhibiting load resonance, which comprises a shell, a throttling valve core, a damping hole, a spring, a pressure storage valve core, a plug, a cover plate, an adjusting bolt and the like. The hydraulic system dynamic correction device is used in a hydraulic control system, and increases the system damping under high frequency by the matching design of the spring stiffness, damping hole, pressure storage valve core and throttling valve core, thereby inhibiting the load resonance. As an independent functional block, the hydraulic system dynamic correction device can effectively inhibit the high-frequency resonance on the premise of ensuring the low-frequency phase to be basically unchanged, has the advantages of compact structure and simple interface, and can be conveniently installed on the hydraulic cylinder.

Description

technical field [0001] The invention relates to a hydraulic system dynamic correction device capable of effectively suppressing load resonance, belonging to the field of fluid transmission and control. Background technique [0002] In the hydraulic control system, when the hydraulic servo actuator pushes the elastic load, it will resonate with the load at a certain frequency point, which will affect the stability of the system. In order to suppress the resonance of the system, the way of reducing the system gain is usually adopted. However, this method will reduce the rapidity of the system, resulting in a certain lag in the system phase. [0003] In the hydraulic servo mechanism with mechanical feedback, since the electronic correction scheme cannot be adopted, the control of the resonance peak is generally achieved by increasing the system damping. The usual solution is to use a servo valve with pressure feedback function. This solution is to add a dynamic pressure feed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B19/00F15B13/02
Inventor 曾广商邓涛滕怀海姜玉峰陈飞
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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