In this paper a linear model of a power steering system has been presented. This model has been used to study and explain the chattering phenomena that can occur in hydraulic power steering units with poor layout of the valve characteristic in terms of stability. In order to secure a stable system independent of the outcome of tolerances, a model has to be used. The linear model presented can be used in the early design process to avoid stability problems by establishing the inner limit of the static boost curve. The method presented is based on establishing the amplitude margin as a measure of stability, which varies with other factors except for the valve characteristic. Different layouts and system geometry affect the system stability. Different bussing affects the friction and the spring coefficients in the system and changes the parameters in the models. However, the valve characteristic is the factor that has the greatest impact on the stability margin.
Robust design of a power steering system with emphasis on chattering phenomena
2007
15 Seiten, 12 Bilder, 7 Quellen
Aufsatz (Konferenz)
Englisch
Approximate solutions for chattering control and chattering arc
Online Contents | 2000
|AIAA | 1982
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