Electric servo mechanism load simulation system and simulation method thereof

Abstract

The invention provides an electric servo mechanism load simulation system and a simulation method thereof. The system comprises a pedestal, a tested servo mechanism and a force moment loading mechanism which are disposed on the pedestal, a rigidness simulation mechanism, a friction simulation mechanism, an inertia simulation mechanism, a torque sensor, an angle sensor, and a central processing unit, wherein the rigidness simulation mechanism, the friction simulation mechanism, the inertia simulation mechanism and the torque sensor are disposed between the tested servo mechanism and the force moment loading mechanism, and the angle sensor is used for measuring the position and speed of the force moment loading mechanism. The rigidness simulation mechanism is connected with a rotor of the tested servo mechanism, and is driven by the rotation of the tested servo mechanism to swing. The friction simulation mechanism, the inertia simulation mechanism and the force moment loading mechanism are located in the same main axis, and are respectively used for simulating a friction load, an inertia load and an elastic load. The central processing unit receives detection signals of the torque sensor and the angle sensor, and judges whether the force moment parameter indexes of rotation inertia, rigidness, rotation speed and simulation position meet the requirements of performance testing under the condition of different loads or not.

Description

technical field [0001] The present invention relates to the field of electromechanical system experimental facilities, and more specifically relates to an electric servo mechanism load simulation system, which is used to simulate the mechanical structural mechanical characteristics of the servo mechanism of the aircraft steering gear and the aerodynamic hinge moment that the steering gear bears during flight. Background technique [0002] At present, most of the various load simulation test benches developed at home and abroad are electro-hydraulic servo control systems that use hydraulic motors or hydraulic cylinders as actuators. It has the disadvantages of large energy loss, complex pipeline, expensive purchase, and poor anti-pollution ability. Therefore, the motor servo system is applied to the development of the load simulation test bench, thus forming the electric load simulation test bench system, which has the advantages of low cost and convenient maintenance. [00...

AI Technical Summary

Problems solved by technology

[0003] However, the current domestic electric load simulation test bench uses DC torque motor as the actuator, and its rated load capacity is generally lower than 100Nm, which can only meet the load simulation requirements of small torque and low power.

And with the increase in the requirements for the rated load capacity, the further increase in the moment of inertia of the DC torque motor is not conducive to the requirements of the torque system for the response speed

[0004] And most of the current electric load simulation test benches adopt the structure of "loading actuator-torque sensor-loaded servo mechanism". It is realized by loading the actuator, which increases the difficulty of control

And because the loading end is rigidly connected to the loaded end, it is not conducive to restraining the excess force of the loading system

Images