Research On The Control Simulation Of Tower Crane Virtual Operating System

With the constant expansion of our country building, tower crane is more and more applied to the construction site. The restrictions by pilot operation level, tower crane safe operation exists big security risk. Traditional way of driving training high costs and has long cycle, which cannot meet the current applications. Tower crane simulation driving training system is both an effective and safe operation platform, which improves the technical level of the tower pilot. It can real-time simulates various scenes, weather and subsequent change that meet trainees adapt to the changing environment needs.Along with the computer simulation technology, real-time image processing technology and virtual reality technology rapid develop in recent years, which laid the foundation for the development of simulated driving training system. This paper mainly studies realization and applications of the simulated driving training system of the tower crane. The main research is as follows.(1) Study the process of virtual scene modeling scene modeling, environment modeling, and the operation of the physical modeling by Creator; beautify the scene of each model by using texturing and texture mapping technology; use the model database optimization techniques completes streamlining and improves the virtual scene model, which saves memory space and enhances the efficiency of the system.(2) Study the application of each module of Vega, and realize the driven simulation of tower crane driving simulator training system. Increase roaming in the virtual scene, which makes trainers to become familiar with virtual training scenarios and increases the immersion of training system; use "Object" module, implements loading models and places the location of the tower crane; using vgChannel class of functions makes vision changes implemented by training, and increase the trainers interact with the scene; use of the environment settings and sound effects add-technology, improves the function of tower crane driving simulator training system; two cases for discussing the implementation of collision detection methods solves the distortion of goods running through the wall and completes between different body models collision detection. (3) Complete simulation of control of tower crane driving simulator training system. First analyze the tower crane driver training simulation system structure and the relationship between the various modules, and set a hardware joystick and the joystick on each stall; second, study the tower crane's luffing, slewing and lifting motion of the mechanical characteristics and calculate the swing angle size of goods; set the change angle in different stalls and completes setting up stalls of the control system by calling the function vgGetWinKey() and vgGetPos().(4)Analyze the tower crane load swing during exercise and the displacement of the load in the virtual scene situation. Use setting pose Vega functions, successfully simulate horizontal and vertical displacement changes of tower crane load swing; the load position is set after the competition of collision detection, and complete the changes of load swing; successfully eliminate load swing by using delay filter theory, and contrast the different societies of load of swing and no swing; complete the different conditions between a driving instructor and trainer operating tower crane, hence increasing the training of students function of this system.