| Currently, the use of electromechanical special equipment become more and more frequent in people’s daily life, and the role they play become more and more obvious. However, due to the particularity of electromechanical special equipment, loss is often very significant when an accident happens. The cause of the accident is that people do not have enough expertise and do not operate equipment correctly. This exposed the existence of a number of deficiencies in electromechanical special equipment training. By means of building the system of education and emergency drills for electromechanical special equipment, emergency drills of the electromechanical special equipment could be simulated in the virtual environment, and help to improve the effectiveness of training for operating personnel. Thereby reducing the incidence of electromechanical special equipment accidents during the operation. For the motion simulation of electromechanical special equipment, the simulation of translational motion and rotational motion was relatively simple to implement, but the simulation of spatial trajectory motion was difficult and important. Therefore, the dissertation chooses the spatial trajectory motion of the electromechanical special equipment to carry on the motion simulation research. The specific works were discussed as follows:Firstly, the locus motion of rigid body along rigid spatial track was studied. Taking the roller coaster as the object of study, the geometry modeling and motion simulation of roller coaster were discussed. Above all, according to the coordinate values of the roller coaster columns, a complete supporting tube center line equation was piecewise fitted by using binomial function fitting polyfit command in the MATLAB software. And the three-dimensional model of the track was drawn by scanning order of the SolidWorks software. At last, the position and angle values of the vehicle at each trajectory point were obtained by using the interpolation interplcommand. On this basis, the locus motion simulation of the roller coaster was realized.Secondly, the trajectory motion of rigid body along its flexible spatial track was researched. Roller coaster was taken as the object of study. The behavior modeling and movement simulation of roller coaster were discussed. Both the motion of wirerope and the motion of hanging basket belong to the motion of Roller coaster. The locus motion of a point of wirerope and the deformation movement of wirerope belong to the motion of wirerope. The wire rope and the hanging basket were added gravity and other physical effects by using physics engine technology. And through the improvement of the plug QuickRopes2, the motion simulation of the wirerope under the stress situation was realized. Then, under without considering gravity and deformation, behavioral modeling and simulation achievement of the wirerope were introduced. Through the establishment of the real-time locus motion equations of hanging basket, the motion of the hanging basket was controlled to show the motion of the wirerope, in order to achieve the visual effect of the motion simulation of wirerope.Thirdly, the logic control technology in the 3D visualization simulation was illustrated. The logic control principle in Unity Script was analyzed in order to process the connection between the events and states appropriately. The logical relationship between the various steps and operations of electromechanical special equipment emergency drill simulation process was designed. And the logic control of the simulation was implemented adopting the logic control of script.Finally, the system of education and emergency drills for electromechanical special equipment was designed and developed. After the project resource was imported into the virtual simulation platform Unity, the emergency drills of the roller coaster and the passenger ropeway was developed by using Unity Script. The realization of scene view control function and interactive function in emergency simulation was introduced. |
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