The erection mechanism with movable back hinged bearing is a novel erection mechanism and the form of its moving process is complicated. The novel erection mechanism needs to be extensively tested to prove its value and to ensure it works properly. Kinematic
Keywords: Erection mechanism, Co-simulation, Virtual prototype technology, Fuzzy controlCopyright © 2016 Universitas Ahmad Dahlan. All rights reserved.
IntroductionThe erection mechanism with movable back hinged bearing is a novel erection mechanism. Compared with traditional erection mechanism it adds horizontal cylinder, therefore back hinged bearing can move in horizontal direction driven by hydraulic cylinder. The novel mechanism can fulfill the erection requirements in strictured space. The erection mechanism needs to be extensively tested to prove its value and to ensure it works properly.Experiments normally require expensive equipment and long process of part design and system integration. Comprehensive simulations are often necessary and helpful. The erection mechanism contains mechanical and hydraulic system, therefore alone software cannot completely achieve its feature. The dynamic behavior of hydraulic system is highly non-linear due to the phenomena such as nonlinearities of valve cylinder combination, friction, fluid compressibility and associated stiffness, which cause difficulties in the control of such systems.Virtual prototype technology provides an effective approach for investigating the novel erection mechanism. One widely used simulation software is Simulink, which is a diagram programming method and provides a general environment. ADAMS is a powerful mechanical design and simulation software, which provides tools to build mechanical structures and 3D visual simulation. AMESim offers a graphical modeling approach and many libraries of components particularly in hydraulics. Co-simulation method has been extensively adopted in research and simulation of hydraulic steel-belt overwind buffer device [1], braking performance of a vehicle [2], a two-axis tracking system [3], four-wheel-drive hybrid electric vehicle [4], a turbojet fuel system [5], parallel hybrid loader [6], an electric bus with motorized wheels [7], the composite ABS control of vehicles [8], and so on. The co-simulation platform exploits the advantages of different software. The simulation results illustrate that virtual prototype technology has a good application in many scopes and is an effective approach for investigating behaviors of complex systems. It can also save time and cost. Fuzzy logic control is an alternative approach to achieve desired goals. Chen C. Y. [9] proposed an integrated fuzzy controller to achieve a synchronous positioning objective for a dual-cylinder electro-hydraulic lifting system with unbalanced loadings, system uncertainties and disturbances. The experimental results showed that the controller can effectively achieve the objective of position synchronization. Li L [10] proposed a fuzzy adaptive sliding mode control scheme which
