축소차수 피드백 제어에 의한 반 차량 능동현가시스템에 관한 연구
Half-Car Active Suspension System with a Reduced Order State Feedback Control
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참고문헌
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초록
An active suspension system has an external energy source, from which energy is constantly supplied to the system for continuous control of the vehicle's motion. There are some control strategies. In the study, the reduced-order active suspension control strategy via the singular perturbation technique is applied to the half car model which has 4 DOF. The performance of the hydraulic active suspension system utilizing this control strategy is investigated and compared with those of the systems with the full-order state feedback control and the sky-hook damping control. Their performances are compared through the computer simulation in the time and the frequency responses, respectively. In the transient response analysis, the C-language program is used, and Matlab program tool is used in the frequency response analysis. It is shown that the reduced-order control strategy yields almost the same performance as that of the full-order state feedback control, and gives better performance than that of the sky-hook damping control, especially in ride quality.
Abstract
An active suspension system has an external energy source, from which energy is constantly supplied to the system for continuous control of the vehicle's motion. There are some control strategies. In the study, the reduced-order active suspension control strategy via the singular perturbation technique is applied to the half car model which has 4 DOF. The performance of the hydraulic active suspension system utilizing this control strategy is investigated and compared with those of the systems with the full-order state feedback control and the sky-hook damping control. Their performances are compared through the computer simulation in the time and the frequency responses, respectively. In the transient response analysis, the C-language program is used, and Matlab program tool is used in the frequency response analysis. It is shown that the reduced-order control strategy yields almost the same performance as that of the full-order state feedback control, and gives better performance than that of the sky-hook damping control, especially in ride quality.
참고문헌 (4)
- Alternative control of laws for automotive active suspension, "C. Yue", ACC, ~ (1988)
- M.A. Salman, "Reduced order design of active suspension control", Trans. of ASME, 112 (1990)
- Kawarasaki Y., "of hydraulic active suspension", 自動車技術, 44(1) (1990), 1990
- 김주용, "슬라이딩 모드제어에 의한 유압 현가시스템의 설계변수 민감도 해석", 유공압시스템학회지, 5(2), pp.20~26 (2008), 유공압시스템학회