랙-피니언 조향기구의 조향오차 최적설계

This paper addresses an optimization for reducing a steering error of a rack-and-pinion steering linkage with a MacPherson strut independent front suspension system. The length, orientations and inner joint positions of a tie-rod are selected as design variables and Ackerman geometry, understeer effect, minimum turn radius, wheel alignment and pac- kaging are considered as design constraints. Nonlinear kinematic analysis of the steering system is performed for calculating the values of cost and constraints, and Augmented Lagrange Multiplier(ALM) mehtod is used for solving the constrained optimization problem. The optimization results show that the steering error are considerably reduced while satisfying all the constraints.