Articulated system test method, system, medium and equipment

Abstract

The invention discloses an articulated system test method and system, a medium and equipment. The method comprises the following steps: establishing a dynamic virtual test bed; wherein the dynamic virtual test bench comprises V1 and V2 vehicle body dynamics models and an articulated system dynamics model; the method comprises the following steps of: invalidating subsystems related to damping characteristics in an articulated system, establishing a fixed pair between a vehicle V1 and the ground, establishing a rotating pair around an x axis or a y axis or a z axis between a vehicle V2 and the ground, applying torque on the rotating pair, invalidating other rotating pairs, and calculating the equivalent stiffness of the articulated system; all subsystems related to rigidity characteristics in the articulated system are invalid, a fixed pair between the vehicle V1 and the ground is kept, a rotating pair around the x axis or the y axis or the z axis between the vehicle V2 and the ground is activated, torque is applied to the rotating pair, other rotating pairs are invalid, and the equivalent damping of the articulated system is calculated. The method has the advantages of low cost, good universality, short test period, simplicity and convenience in operation, high test precision and the like.

Description

technical field [0001] The present invention mainly relates to the technical field of vehicle articulation systems, in particular to a test method, system, medium and equipment for an articulation system. Background technique [0002] As the society's demand for green travel increases, the importance of public transportation has become increasingly prominent. Among them, the articulated passenger car has been popularized and applied at home and abroad because of its large passenger capacity and flexible operation. For example, the smart rail tram is an articulated passenger vehicle. Articulated buses are generally made up of multiple vehicles connected by a hinge system. The articulation system is divided into front and rear frames and turntable bearings, in which the front and rear frames and the front and rear car bodies are respectively connected by rubber bushings, so that the pitch and roll movements at a certain angle can be realized between the car bodies; the front ...

AI Technical Summary

Problems solved by technology

[0005] (1) The above technical solutions require the design and manufacture of related test benches, which have complex structures, long cycles, and high costs; the same test bench may not be able to test different types of bus articulation systems;

[0006] (2) The above technical solution loads the test drive directly on the structure of the articulated system itself, which is not enough to measure the equivalent stiffness and damping characteristics of the articulated system as an articulated vehicle subsystem;

[0007] (3) The above technical solution describes the test condition with only one pitch axis. For the hinged system with two pitch axes (such as figure 2 A, B axis), the existing test method is not enough to measure the equivalent stiffness and damping characteristics of the system

[0008] In addition, there are existing technologies that describe the structural principles of the hinged system in detail, and schematically give the relevant stiffness characteristics of the hinged system, but do not give specific testing methods

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