In this paper, reference to relevant research data, based on the dual front axle steering system as geometric structure, the use of space that contains the geometric method to establish institutions and steering linkage arm, including dual front axle steering system model. Analysis of the double front axle steering vehicle in the actual process of turning, the outer corner and the ideal, the deviation between the outer corner, the optimum design ideas. Obtained according to geometric angle of each round of the actual angular error with the theoretical minimum as the objective function, spatial arrangement as a constraint, according to the weighted function to determine the scope of the corner, on the steering system and steering linkage rocker mechanism to optimize the design , a reasonable two-front axle steering parameters. The double front axle steering car steering process, the relationship between steering wheel angle as close to ideal relationship, reducing tire wear during steering. Appropriate simplification of the steering system, the use of multi-body dynamic simulation software ADAMS establishment, including the steering wheel, recirculating ball steering, dual rocker transmission, suspension, kingpin, the steering wheel, etc., dual front axle steering system model. To built the model, the dual front axle steering system kinematics and dynamics analysis. Obtained by kinematic analysis of the rotation angle curve obtained with MATLAB software simulation of the rotation angle curve similar. Kinetic analysis of the main bar by the force situation and the rods compare the actual situation is consistent with the force. Dual front axle steering system for the actual development to provide a theoretical basis.
Key words: dual front axle steering optimized kinematics and dynamics
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