Steering compensation for high-performance motorcycles

This paper introduces the idea of using a mechanical steering compensator to influence the dynamic behaviour of a high-performance motorcycle. The compensator is seen as a possible replacement for a conventional steering damper, and comprises a network of a spring, a damper and a less familiar component called the inerter. The inerter was recently introduced to allow the synthesis of arbitrary passive mechanical impedances, and finds a new potential application in the present work. The approach taken here to design the compensator is based on classical Bode-Nyquist frequency response ideas. The vehicle study involves computer simulations, which make use of a state-of-the-art motorcycle model whose parameter set is based on a Suzuki GSX-R1000 sports machine. The study shows that it is possible to obtain significant improvements in the dynamic properties of the primary oscillatory modes, known as "wobble" and "weave", over a full range of lean angles, as compared with the standard machine fitted with a conventional steering damper.

[1]  David H. Weir,et al.  Experimental Investigation of the Transient Behavior of Motorcycles , 1979 .

[2]  Yoshitaka Tezuka,et al.  Application of the magic formula tire model to motorcycle maneuverability analysis , 2001 .

[3]  Simos A. Evangelou,et al.  Advances in the Modelling of Motorcycle Dynamics , 2004 .

[4]  Malcolm C. Smith.  Synthesis of mechanical networks: the inerter , 2002, IEEE Trans. Autom. Control..

[5]  W M Otto.  EFFECT OF MOTORCYCLE ACCESSORIES ON STABILITY , 1980 .

[6]  Tsutomu Nakamura,et al.  EXPERIMENTAL AND THEORETICAL STUDY OF THE INFLUENCE OF TIRES ON STRAIGHT-RUNNING MOTORCYCLE WEAVE RESPONSE , 1984 .

[7]  Jon S. McKibben.  Motorcycle Dynamics-Fact,Fiction and Folklore , 1978 .

[8]  Robin S. Sharp,et al.  The Stability and Control of Motorcycles , 1971 .

[9]  Akira Aoki,et al.  Experimental Study on Motorcycle Steering Performance , 1979 .

[10]  Robin S. Sharp,et al.  A Motorcycle Model for Stability and Control Analysis , 2001 .

[11]  Malcolm C. Smith,et al.  Positive real synthesis using matrix inequalities for mechanical networks: application to vehicle suspension , 2004, IEEE Transactions on Control Systems Technology.

[12]  Simos A. Evangelou,et al.  Motorcycle Steering Oscillations due to Road Profiling , 2002 .

[13]  Akira Hasegawa,et al.  Experimental Analysis of Transient Response in Motorcycle-Rider Systems , 1988 .

[14]  Hans B. Pacejka,et al.  MOTORCYCLE TYRE MEASUREMENTS AND MODELS , 1998 .

[15]  Gordon Jennings,et al.  A Study of Motorcycle Suspension Damping Characteristics , 1974 .

[16]  G. E. Roe,et al.  A Solution of the Low-Speed Wheel Flutter Instability in Motorcycles , 1976 .

[17]  C. Koenen,et al.  The dynamic behaviour of a motorcycle when running straight ahead and when cornering , 1983 .

[18]  Francesco Biral,et al.  Experimental Study of Motorcycle Transfer Functions for Evaluating Handling , 2003 .

[19]  P. T. J. Splerings.  THE EFFECTS OF LATERAL FRONT FORK FLEXIBILITY ON THE VIBRATIONAL MODES OF STRAIGHT-RUNNING SINGLE-TRACK VEHICLES , 1981 .

[20]  Robin S. Sharp,et al.  THE INFLUENCE OF STRUCTURAL FLEXIBILITIES ON THE STRAIGHT-RUNNING STABILITY OF MOTORCYCLES , 1980 .

[21]  Tony Foale,et al.  Motorcycle handling and chassis design : the art and science , 2002 .

[22]  David J. N. Limebeer,et al.  Linear Robust Control , 1994 .

[23]  Naresh K. Sinha,et al.  Modern Control Systems , 1981, IEEE Transactions on Systems, Man, and Cybernetics.

[24]  Simos A. Evangelou,et al.  The stability of motorcycles under acceleration and braking , 2001 .

[25]  Hans B. Pacejka,et al.  Tire and Vehicle Dynamics , 1982 .

[26]  Robin S. Sharp.  Stability, Control and Steering Responses of Motorcycles , 2001 .

[27]  V. Cossalter,et al.  A Motorcycle Multi-Body Model for Real Time Simulations Based on the Natural Coordinates Approach , 2002 .

[28]  B. Thomson,et al.  AUTOMATED SYSTEMS USED FOR RAPID AND FLEXIBLE GENERATION OF VEHICLE SIMULATION MODELS EXEMPLIFIED BY A VERIFIED PASSENGER CAR AND A MOTORCYCLE MODEL , 1983 .

[29]  Y Watanabe,et al.  MOTORCYCLE HANDLING PERFORMANCE FOR OBSTACLE AVOIDANCE , 1973 .