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A linear loading measurement and control system

A measurement and control system, straight line technology

Active Publication Date: 2019-04-12
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, at present, the main research in China is the electro-hydraulic servo loading system with hydraulic motor or actuator as the actuator. This loading method has disadvantages such as oil leakage, inconvenient maintenance, sensitivity to oil pollution and frequent failures. Nonlinear factors such as inertia and seal friction also greatly affect the loading accuracy; while the electric servo loading using linear servo motors has the disadvantages of being limited to active loading, relatively high cost, and inconvenient manufacturing and maintenance.

Method used

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Embodiment

[0025] A linear loading measurement and control system, including a test bench and a console, wherein the console includes a motion control card and an acquisition card, and the console is used to perform closed-loop loading control on the test bench and realize human-computer interaction functions, wherein the test bench includes a T-shaped platform 1. The servo loading system and the servo system under test, wherein the servo loading system includes a servo loading motor 2, a servo loading motor support 3, a coupling 4, a torque speed sensor 6, a torque speed sensor support 5, and a sleeve 7 , Ball screw auxiliary support unit 9, support 8, ball screw 10, rotation limiting support 11, guide rail 13, slider 12, key 17, connecting plate 15, ball screw auxiliary nut 14, rotation limiting block 16, Nut connecting shaft 18, connecting flange 20, tension pressure sensor 21, grating ruler 19, grating ruler mounting plate 36, linear guide rail 22, moving slider 23, connecting piece 2...

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Abstract

The invention discloses a linear loading measurement and control system, and the system comprises a test bench and a control console. The control console comprises an industrial control computer, a motion control card, and a collection card. According to the invention, a ball screw pair is employed as a conversion structure, and double linear guide rails and a key limiting rotating screw nut output are combined to achieve the loading of a linear force. A motion conversion system only has a rotating part: a screw, so the rotational inertia is small and the improvement of the loading performance is facilitated. According to the invention, a proper load spectrum pair mechanism can be designed for loading simulation according to the actual load of a tested mechanism, and the system also can achieve the testing of the rotation precision, the rigidity and fatigue characteristics of the mechanism. The system employs a servo motor to replace a hydraulic valve to form an electric loading system. The system is high in response speed, is small in size, is simple in structure, is low in cost, is convenient to control, and is high in cost performance.

Description

technical field [0001] The invention belongs to the technical field of control devices, in particular to a linear loading measurement and control system. Background technique [0002] In recent years, with the growth of my country's comprehensive national strength and the needs of national defense construction, a number of equipment and equipment with independent intellectual property rights have been put into use, and projects such as high-thrust rockets, heavy-duty aircraft, aircraft carriers and various new missiles have been launched successively Research, and in this type of equipment, a servo drive system that can realize a linear motion mechanism plays an important role. [0003] How to simulate loading of the linear motion servo drive system according to the actual load change law before the vehicle commissioning, and test and display its drive current change, output characteristics and dynamic characteristics in real time, to understand the working characteristics of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/414
CPCG05B19/4142G05B2219/34013
Inventor 范元勋徐志伟
Owner NANJING UNIV OF SCI & TECH
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