IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
|
출원번호 |
US-0064993
(2002-09-06)
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발명자
/ 주소 |
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출원인 / 주소 |
|
대리인 / 주소 |
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인용정보 |
피인용 횟수 :
29 인용 특허 :
10 |
초록
▼
The present invention provides a method and system to use feedback control algorithms to monitor and dynamically modify front and rear braking torque to initiate braking based on driver demand, initially favoring regenerative braking more than conventional braking balance would indicate while monito
The present invention provides a method and system to use feedback control algorithms to monitor and dynamically modify front and rear braking torque to initiate braking based on driver demand, initially favoring regenerative braking more than conventional braking balance would indicate while monitoring and maintaining vehicle controllability factors such as oversteer and understeer. A simple proportional-integral-derivative feedback controller can be used. Vehicle sensors for wheel speed, lateral acceleration, yaw rate, and brake position can provide input to the controller to monitor vehicle conditions and to activate non-regenerative and regenerative braking in varying proportions based on at least one actual vehicle controllability value and predetermined target value for controllability and optimization of energy recovery. Controllability factors can include predetermined longitudinal wheel slip ratios or a comparison of tire slip angle or yaw rate to a target value.
대표청구항
▼
The present invention provides a method and system to use feedback control algorithms to monitor and dynamically modify front and rear braking torque to initiate braking based on driver demand, initially favoring regenerative braking more than conventional braking balance would indicate while monito
The present invention provides a method and system to use feedback control algorithms to monitor and dynamically modify front and rear braking torque to initiate braking based on driver demand, initially favoring regenerative braking more than conventional braking balance would indicate while monitoring and maintaining vehicle controllability factors such as oversteer and understeer. A simple proportional-integral-derivative feedback controller can be used. Vehicle sensors for wheel speed, lateral acceleration, yaw rate, and brake position can provide input to the controller to monitor vehicle conditions and to activate non-regenerative and regenerative braking in varying proportions based on at least one actual vehicle controllability value and predetermined target value for controllability and optimization of energy recovery. Controllability factors can include predetermined longitudinal wheel slip ratios or a comparison of tire slip angle or yaw rate to a target value. rt, 1993. Shah, "Ground Collision Warning System Performance Criteria for High Maneuverability Aircraft," Flight Stability and Control Branch Wright Patterson AFB, 1988. Stevens, "Terprom Helps Low-Altitude Flight,: Terrain-Navigation System for Flying at Low Height," Elektronica 1986, (Dutch) w/Engligh Transl. "Safety Through Interactions and International Standards," Proceedings of the Flight Safety Foundation', 46thAnnual International Air Safety Seminar, Kuala Lumpuir, Malaysia, 1993. Williams and Mitchell, "Effects of Integrated Flight Path and Terrain Displays on Controlled Flight into Terrain," Center for Human-Machine Systems Research, School of Industrial and Systems Engineering, Georgia Institute of Technology. Young, Warning System Concepts to Prevent Controlled Flight Into Terrain (CFIT), Defense Systems & Electronics Group, Texas Instruments, Inc. IEEE, 1993. "Bae Terrain Software Bound for USF-16," Flight International, Aug. 1993, Computer Printout. "Technology and Air Attack," Asian Defense Journal, 1993. The F-16 Digital Terrain System, British Aerospace, The Institute of Electrical Engineers, 1995. "GCAS-13 Past, Present and Future of Alert Systems for Abnormal Closure to Ground," Abstract, Mar., 1993, Translation of Abstract. (Japanese). "Terrain Databases and Their Use In Navigation and Collision Avoidance," Institute of Electrical Engineers, Ele
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