(The) development of robust control logic for electronic wedge brake and adaptation scheme for pad friction-coefficient estimation = Electronic wedge brake의 강인제어 및 브레이크 패드 마찰계수 추정을 위한 적응제어 기법의 개발

Siemens VDO, German electronic and mechatronic developer announced an innovative braking device called Electronic Wedge Brake (EWB) several years ago. It uses self-energizing effect using wedges, so it became the most energy-effective braking device among Brake-by-Wire systems which is compatible with existing 12 Volts system. Siemens VDO says that EWB uses only about 10 percent of energy of conventional hydraulic devices. Also, EWB features more fast response characteristic, reducing stopping distance by 15 percent compared to hydraulic ones. But, as EWB uses self-reinforcement effect, it is very sensitive to parametric variance, e.g. friction coefficient variance during braking. Small parametric error is highly amplified through self-energizing effect, degrading system response characteristic. So, it is required to develop robust control techniques. This research is focused on developing such robust control techniques to make system robust to parametric variances, particularly to the pad friction-coefficient error. The pad friction-coefficient is one of the main reasons that make it difficult to control a brake system precisely. Also, the estimation logic will be proposed for the pad friction-coefficient estimation in real time. It will be possible to estimate a brake torque with an estimated pad friction-coefficient. In addition, this research suggests a cost effective control scheme without a complex sensing of clamp force.
Advisors
Choi, Sei-bumresearcher최세범researcher
Publisher
한국과학기술원
Issue Date
2008
Identifier
296293/325007  / 020063983
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 자동차기술대학원, 2008.2, [ vi, 66 p. ]

Keywords

일렉트로닉 웨지 브레이크; 브레이크 바이 와이어; 슬라이딩 모드 제어; 강인 제어; 적응 제어; Electronic Wedge Brake; brake by wire; sliding-mode control; robust control; adaptive control; 일렉트로닉 웨지 브레이크; 브레이크 바이 와이어; 슬라이딩 모드 제어; 강인 제어; 적응 제어; Electronic Wedge Brake; brake by wire; sliding-mode control; robust control; adaptive control

URI
http://hdl.handle.net/10203/44424
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=296293&flag=t
Appears in Collection
ME-Theses_Master(석사논문)
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