TECHNIQUES FOR STUDYING A MOBILE HYDRAULIC CRANE IN VIRTUAL REALITY
Keywords:
mobile crane, hydraulics-mechanics coupling, virtual reality, interface, real-time simulation, numerical solversAbstract
Mobile hydraulic applications are exposed to changing environmental conditions and working processes. Further-more, the fact that those systems consist of mechanical, fluid power and electronic control parts, make the design phase of the product to become complex. In a product development process, system configurations, components selections and parameter optimization must be accomplished in an evaluation-iteration method until fulfilling the performance specification. Replacing real physical prototypes by mathematical models and virtual prototyping in the design process is a major benefit in terms of reducing costs and time in the design phase. This paper introduces a modular method that generates dynamic models for a mobile hydraulic crane and a 3D graphical interface for visualizing of the simulation results in real-time. From the visual feedback provided by the interface, the user interacts with the course of the simula-tion by driving the crane model with joystick controllers. Such a tool is ideal to be utilised in virtual prototyping, since user can virtually drive and test the prototype and evaluate the system behaviour in real-time. The simulator also allows the user to instantly modify parameters and components of the model. A two degree of freedom hydraulically-driven crane is studied as an example.
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References
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