Improved azimuth angle feedback steering system by introducing yaw rate feedback (first report) - Basic characteristics and relation with conventional steering system -

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Improved azimuth angle feedback steering system by introducing yaw rate feedback (first report) - Basic characteristics and relation with conventional steering system -

Kodaira, Kazunori / Oyama, Yasuharu / Sano, Shoichi

In a steering system that uses azimuth angle feedback, there is one-to-one correspondence between the vehicle's azimuth angle and the steering wheel angle in a quasi-steady state condition. Because of this, learning how to steer with such a system is expected to be easier than with conventional steering systems, in which the vehicles azimuth angle is determined by the integral of the steering wheel angle. In addition, steering systems with azimuth angle feedback are able to offer superior emergency obstacle avoidance performance because they reduce delays in response. The azimuth angle feedback steering system shows enhanced performance in the situation where quick steering action is necessary but it requires continuous angle increments during turning, which results in some additional workload on drivers. Introducing yaw velocity feedback into the system enables the system to reduce the steering wheel angle increments and the yaw velocity damping. As a result the system can reduce drivers workload and improve course following performance. The basic characteristics of this generalized azimuth angle feedback steering system and its relation with conventional and the simple azimuth angle feedback system are presented in this first report. With steer-by-wire technology, it is possible to introduce various control methods to steering systems. Steering systems using azimuth angle feedback make it possible to greatly reduce the amount the steering wheel must be returned when turning is complete. Although such technology may feel strange to people who have grown accustomed to the control methods of conventional steering systems over the years, considered comprehensively, the technology has the potential to reduce driver workload and enhance safety. As this report has pointed out, furthermore, adding yaw velocity feedback to azimuth angle feedback increases this potential even more. (to be continued)

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Dokumentinformationen

Titel :

Improved azimuth angle feedback steering system by introducing yaw rate feedback (first report) - Basic characteristics and relation with conventional steering system -

Weitere Titelangaben:

Verbessertes seitenwinkelgeregeltes Lenkungssystem durch Einführung der Giergeschwindigkeitsaufschaltung (erster Bericht) - Grundcharakteristiken und Beziehung zum konventionellen Lenkungssystem -

Beteiligte:

Kodaira, Kazunori (Autor:in) / Oyama, Yasuharu (Autor:in) / Sano, Shoichi (Autor:in)

Erschienen in:

Review of Automotive Engineering (JSAE) ; 28 , 3 ; 377-383

Erscheinungsdatum :

2007

Format / Umfang :

7 Seiten, 8 Bilder, 2 Tabellen, 1 Quelle

ISSN :

1349-4724

Medientyp :

Aufsatz (Zeitschrift)