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The design and analysis of an intelligent vehicle suspension with MR dampers should address hybrid semi-active control goals,such as rejection of current-switching discontinuity and MR-damper hysteresis,asymmetric damping from the symmetric MR-damper design,robustness on the vehicle operation parameter uncertainties and consideration of essential multiple suspension goals. Following the proposed skyhook-based asymmetric semi-active controller (Part I ) for achieving the above goals,herein,a set of suspension performance measures and three kinds of varying amplitude harmonic,rounded pulse and really measured random excitations are systematically defined,and the sensitivity of quarter-vehicle MR-suspension performance to variations in operating conditions is thoroughly analyzed.The results illustrate that the proposed skyhook-hased semi-active MR-suspension in the asymmetric mode yields relatively superior dynamic responses to meet the multiple suspension performances of ride,rattle space,road-holding and dynamic tire force transmitted to the pavement,and has desirable robustness on variations in operating conditions of vehicle load and speed and the road roughness.
The design and analysis of an intelligent vehicle suspension with MR dampers should address hybrid semi-active control goals, such as rejection of current-switching discontinuity and MR-damper hysteresis, asymmetric damping from the symmetric MR-damper design, robustness on the vehicle operation parameter uncertainties and consideration of essential multiple suspension goals. Following the proposed skyhook-based asymmetric semi-active controller (Part I) for achieving the above goals, herein, a set of suspension performance measures and three kinds of varying amplitude harmonic, rounded pulse and really measured random excitations are systematically defined, and the sensitivity of quarter-vehicle MR-suspension performance to variations in operating conditions is is analyzed. The results illustrate that the proposed skyhook-hased semi-active MR-suspension in the asymmetric mode factors relatively superior dynamic responses to meet the multiple suspension performances of ride, rattle spac e, road-holding and dynamic tire force transmitted to the pavement, and has desirable robustness on variations in variations in operating conditions of vehicle load and speed and the road roughness.