Two cylinders arranged symmetrically on a frame have become a major form of steering\nmechanism for articulated off-road vehicles (AORVs). However, the differences of stroke and arm\nlead to pressure fluctuation, vibration noise, and a waste of torque. In this paper, the differences of\nstroke and arm are reduced based on a genetic algorithm (GA). First, the mathematical model of the\nsteering mechanism is put forward. Then, the difference of stroke and arm are optimized using a\nGA. Finally, a FW50GLwheel loader is used as an example to demonstrate the proposed GA-based\noptimization method, and its effectiveness is verified by means of automatic dynamic analysis of\nmechanical systems (ADAMS). The stroke difference of the steering hydraulic cylinders was reduced\nby 92% and the arm difference reached a decrease of 78% through GA optimization, in comparison\nwith unoptimized structures. The simulation result shows that the steering mechanism optimized by\nGA behaved better than by previous methods.
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