Electric servo linear loading testing system

Abstract

The invention discloses an electric servo linear loading testing system, and the system comprises a test bench, a control console, and a power distribution cabinet. The test bench comprises a base rack, a servo loading system, a movement conversion system, a tested servo system, and a sensor system. The system employs a ball screw pair as a movement conversion structure, and combines with a linear guide rail to limit the rotation output, so the system achieves the linear force loading. The linear guide rail, a ball screw pair supporting unit and a grating ruler are integrated on the same platform, thereby reducing the installation error, and guaranteeing the overall performance. A rotating part in the movement conversion system is just provided with a screw, so the rotational inertia is small and the improvement of the loading performance is facilitated. In order to solve an electro-hydraulic loading problem, a servo motor is employed for replacing a hydraulic valve so as to form the electric loading system. The system is quick in response, is small in size, is simple in structure, is low in cost, and is convenient to control. Compared with the active loading mode of taking a linear servo motor as an execution mechanism, the system employs the passive loading, is mature in technology, and is high in cost performance.

Description

technical field [0001] The invention belongs to the technical field of control devices, in particular to an electric servo linear loading test 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 th...

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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.

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