Proceedings of the Korean Society of Precision Engineering Conference (한국정밀공학회:학술대회논문집)
- 1993.10a
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- Pages.293-298
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- 1993
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- 2005-8446(pISSN)
차량 능동 현가장치의 혼합제어기 설계
Abstract
In ground vehicles, the increasing demand for safety and ride comfort which are trade-off relation, especially at high speeds, has led to the development od actively controlled suspensions. The LQG/LTR controller can be used to design a robust feedback control system that deals with disturbance rejection properties as well as insensitivity to modelling errors and sensor noise. And when the disturbance can not be measured but is limited within a certain frequency range, a bandpass feedback to eliminate the disturbance response can be used. In this paper, hybrid controller cosisted of bandpass feedback controller and LQG/LTR controller is applied to a quarter-car model moving on a randomly profiled road. The random road profile considered as colored noise is shaped from white noise by use of shaping filter. The performance of the hybrid control system is compared with that of an LQG/LTR controlled system.
Keywords
- Passive suspension;
- Active suspension;
- Bandpass feedback control;
- Shaping Fillter;
- Hybrid controller
- 수동 현가장치;
- 능동 현가장치;
- 대역통과 귀환 제어;
- 성형 필터;
- 혼합 제어기;