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Experiment table for testing hydraulic servo system

A technology of hydraulic servo system and test bench, which is applied in the field of test benches, can solve the problems of high risk, high experiment cost, and high risk, and achieve the effect of reducing experiment cost and risk

Inactive Publication Date: 2010-10-06
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to further test the influence of the improvement of the control algorithm on the position control performance and force control performance of the servo system, it is necessary to carry out experimental research in the actual mechanical device, but this will cause defects such as high experimental cost, high risk, and high risk.

Method used

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  • Experiment table for testing hydraulic servo system
  • Experiment table for testing hydraulic servo system
  • Experiment table for testing hydraulic servo system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The first embodiment is to conduct an experimental study on the force control of the hydraulic cylinder drive unit.

[0031] In this embodiment, the second hydraulic cylinder drive unit can be removed. The first hydraulic cylinder drive unit drives the sliding table 15 to move back and forth along the guide rails 5 and 6, and the control target is the piston rod 8 of the first hydraulic cylinder drive unit and the first hydraulic The force value of the pressure sensor is pulled between the piston rod lugs 9 of the cylinder drive unit. The first hydraulic cylinder drive unit can generate the desired continuous output force.

Embodiment 2

[0032] In the second embodiment, the position servo control of the hydraulic cylinder drive unit under the condition of continuous external load is carried out.

[0033] In this embodiment, the controlled system is a position servo control system composed of the first hydraulic cylinder drive unit, the sliding table 15 and its load 17, and so on. Install the first hydraulic cylinder drive unit and the second hydraulic cylinder drive unit at the same time, the first hydraulic cylinder drive unit generates continuous external interference force, and the first hydraulic cylinder drive unit adopts position control. Under the continuous external interference force, when different control strategies or algorithms are adopted, the present invention can realize the research on the position servo control performance of the controlled system. According to another example of the present invention, it is possible to adopt Figure 4 The structural diagram of the lengthened connecting block sh...

Embodiment 3

[0035] Implementation example three, carry out the position servo control experiment of the hydraulic drive unit under the condition of discontinuous external force load.

[0036] In this embodiment, the controlled system is a position servo control system composed of the first hydraulic cylinder drive unit, the sliding table 15 and its load 17, etc., and the first hydraulic cylinder drive unit and the second hydraulic cylinder drive unit are installed at the same time. The two hydraulic cylinder drive unit adopts force control. The first lug 13 of the first hydraulic cylinder drive unit drives the pin (or bolt) installed on it to slide in the long groove of the extension connecting block 10. At this time, the first hydraulic cylinder The external interference force applied by the position servo control system constituted by the drive unit, the sliding table 15 and its load 17, etc. is zero. When the pin (bolt) reaches the two ends of the long groove of the elongated connecting b...

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Abstract

The invention discloses an experiment table for testing a hydraulic servo system. The experiment table comprises a base, a first differential hydraulic cylinder driving unit, a second differential hydraulic cylinder driving unit, a third support lug, a fourth support lug, a sliding table and a supporting rod, wherein the first differential hydraulic cylinder driving unit and the second differential hydraulic cylinder driving unit are symmetrically fixed on the base along the longitudinal direction; the third support lug and the fourth support lug are used for fixing the first differential hydraulic cylinder driving unit and the second differential hydraulic cylinder driving unit on the base respectively; the sliding table is positioned between the first differential hydraulic cylinder driving unit and the second differential hydraulic cylinder driving unit; the sliding table is connected with the first differential hydraulic cylinder driving unit and the second differential hydraulic cylinder driving unit respectively through a first connecting block and a second connecting block; the supporting rod penetrates the side central position of the sliding table along the transverse direction; and loads are arranged on the supporting rod and on the two sides of the sliding table. When the experiment table is used for performing hydraulic pressure servo control experiment research and hydraulic system position servo control research, an experiment on an actual heavy-load big-inertia equipment mechanical system can be moved to a lab, so that the experiment cost and risk can be largely reduced.

Description

Technical field [0001] The invention relates to an experimental platform, in particular to an experimental platform for testing a hydraulic servo system, and more specifically to an experimental platform for testing and improving the performance of the hydraulic servo system under impact conditions. Background technique [0002] At present, in general industrial fields and heavy machinery fields, mechanical systems often work in the presence of external interference. In some process links, such as forging process, it is also necessary to control the output force of the mechanical system. In order to ensure that the hydraulic system can have good position servo control performance and output force control stability under the presence of external interference forces, in engineering practice, the flexibility of the hydraulic system or mechanical devices are usually used to solve the two aspects. problem. With the improvement of product quality and the requirements of increased mec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B19/00
Inventor 关立文王立平汪劲松程宁波
Owner TSINGHUA UNIV
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