The evolution of steering-system technology has made significant progress during recent decades. A driving factor behind this have been the increasing requirements for active safety of passenger cars. A major contribution to this progress was the introduction and the fast growing application rate of hydraulically assisted power-rack & pinion-steering systems. As the standard hydraulic power steering system can only provide a constant assistance characteristic, whereas the vehicle ideally requires a variable support, the introduction of electronically controlled steering systems was initiated, mainly to adapt the level to create an optimum modelling of the power steering system into the driver-vehicle-control loop by varying the steering characteristics according to the actual vehicle/driving conditions. To achieve these objectives a further increase in the flexibility and controllability of the steering system is required. Only the expanded use of electronic control combined with more sophisticated hydraulic power systems or even electric power systems can make this objective achievable. This paper is intended to describe first the current state of the art steering technology and then to show steps towards a higher level of electronic control and greater sophistication of the total steering system.
Electronically enhanced steering systems
Durch Elektronik verbesserte Fahrzeuglenkung
1992
7 Seiten, 6 Bilder, 5 Quellen
Conference paper
English
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