Parametric design charts are proposed for the central-lever steering linkage, generated for simplified reference configuration mechanisms, the geometry of which is defined by only four parameters. This highlights the fact, yet not generally acknowledged, that the steering law ensured by a mechanism with adjacent central joints (known as bell crank mechanism), can be identically generated by a triple central joint variant of the same. Particular configurations are identified in which the length of the central lever does not affect the wheel-to-wheel transmission function of the mechanism, permitting a simplified synthesis for the cases in which the maximum stroke of the input member is imposed as a design specification.
Issue Section:
Technical Papers
1.
Rao
, R.
, 1968
, “Steering Linkage Design. A Method of Determining the Configuration of the Steering Linkage so that the Geometry Conforms to Ackermann Principle
,” Automot. Eng.
, 58
, pp. 31
–33
.2.
Lukin, P., Gasparyants, G., and Rodionov, V., 1989, “Automobile Chassis. Design and Calculation,” Mir, Moscow.
3.
Simionescu, P. A., and Beale, D., 2002, “Optimum Synthesis of the Four-Bar Function Generator in its Symmetric Embodiment: The Ackermann Steering Linkage,” Mech. Mach. Theory (to appear).
4.
Duditza, Fl., and Alexandru, P., 1975, “Synthesis of the Seven-Joint Space Mechanism Used in the Steering System of Road Vehicles,” Proc. of The 5th World Congress on the Theory of Machines and Mechanisms, Newcastle upon Tyne, pp. 697-702.
5.
Ardayfio
, D. D.
, and Qiao
, D.
, 1987
, “Analytical Design of Seven-Joint Spatial Steering Mechanisms
,” Mech. Mach. Theory
, 22
, pp. 315
–319
.6.
Simionescu
, P. A.
, and Smith
, M. R.
, 2000
, “Applications of Watt II Function Generator Cognates
,” Mech. Mach. Theory
, 35
, pp. 1535
–1549
.7.
Simionescu, P. A., and Alexandru, P., 1995, “Synthesis of Function Generators Using the Method of Increasing the Degree of Freedom of the Mechanism,” Proc. of The 9th World Congress on the Theory of Machines and Mechanisms, Milan, Vol. 1, pp. 139-143.
8.
Kurien
, Isaac K.
, 1993
, “A Nondiferentiable Optimization Algorithm for Constrained Minimax Linkage Function Generation
,” ASME J. Mech Des.
, 115
, pp. 978
–987
.9.
Reimpell, J., and Stoll, H., 1996, The Automotive Chassis: Engineering Principles, Arnold, London.
10.
Brent, R. P., 2002, Algorithms of Minimisation Without Derivatives, Dover, New York.
Copyright © 2002
by ASME
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