Modelica language-based simulation modeling method of amplitude-changing mechanism of automobile crane

Abstract

The invention relates to the technical field of simulation systems of amplitude-changing mechanisms of automobile cranes, particularly to a Modelica language-based simulation modeling method of the amplitude-changing mechanism of the automobile crane. The Modelica language-based simulation modeling method comprises the following steps: 1) dismantling the system; 2) performing component-level modeling; 3) performing sub-system-level modeling; 4) performing system-level modeling; 5) performing simulation control; and 6) finally demonstrating a simulation result. The Modelica language-based simulation modeling method disclosed by the invention adopts a modeling language Modelica of a multi-domain uniform object-oriented physical system for performing mechanical, hydraulic, control and other multi-domain coupled modeling and simulation on the amplitude-changing mechanism of the automobile crane, and various performance curves in two models, namely control and non-control, are analyzed and compared, so that the model adopting the method is proved to be capable of greatly improving the stability of the whole machine in comparison with mechanical and hydraulic models, and avoiding great hydraulic shock and vibration.

Description

[technical field] [0001] The invention relates to the technical field of a simulation system for a luffing mechanism of a truck crane, in particular to a simulation modeling method for a luffing mechanism of a truck crane based on the Modelica language. [Background technique] [0002] Due to the use of the car chassis, the truck crane has the advantages of car driving performance, flexible maneuverability, fast driving speed, and can be quickly put into work after being transferred to the work site. It is widely used in cargo loading and unloading, transfer, equipment installation and high-altitude operations. The luffing mechanism is an important part of the truck crane. Its structure type and working conditions are various, and its working characteristics are intermittent, repetitive and cyclic. In the process of frequent starting and braking, the mechanism and structure are subjected to strong shock and vibration, which is a typical multi-field coupling system such as mac...

AI Technical Summary

Problems solved by technology

Although this idea provides a method to solve multi-energy domain coupling dynamics simulation, it is difficult to achieve seamless integration of various tools in this method

And problems in different fields use different tools to build different models for simulation, and it is bound to encounter complex problems of data transmission. Models are repeated and cannot be reused, which will lead to problems in simulation accuracy, modeling efficiency, and simulation speed.

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