[특허]Anti-lock brake system with piezoelectric brake actuator

[미국특허] Anti-lock brake system with piezoelectric brake actuator 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01L-041/08 B60T-013/00
출원번호	US-0272908 (1999-03-19)
발명자 / 주소	Face Jr. Samuel Allen
출원인 / 주소	Face International Corp
대리인 / 주소	Clark
인용정보	피인용 횟수 : 13 인용 특허 : 21

초록 ▼

An anti-lock braking system includes a moveable member to be braked and a friction brake for applying a braking force. A controller actuates the friction brake in accordance with braking force demands. Braking force demands are determined by the controller by electrical input signals received from a signal generator that is mechanically linked to the brake pedal, as well as by signals from a slip sensor. The slip sensor records values from wheel speed sensor and computes values that may indicate a slippage condition. Based on the recorded and computed values, the slip sensor and sends electric signals to the controller. The friction brake includes a prestressed piezoelectric element that is lightweight, less cumbersome, and highly controllable as compared with prior anti-lock braking devices, and is actuated via electrical signals rather than a mechanical system. A modification is disclosed in which an anti-lock system is placed on each wheel with independent slip sensors providing signals to controllers that control application of braking forces over each wheel as necessary.

대표청구항 ▼

[ I claim:] [1.]1. An electrical braking system, comprising:first friction braking means comprising;a first piezoelectric ceramic layer having opposing first and second major faces; anda first prestress layer bonded to said first major face of said piezoelectric ceramic layer;wherein said first prestress layer normally applies a compressive force to said first piezoelectric ceramic layer;a first moveable member to be braked;an electric controller for generating a first electrical output signal for operating said first friction braking means in accordance with brake force demand inputs, said electric controller having an input side and an output side;a first electrical conductor connected on a first end to said output side of said electric controller and on a second end across said first and second faces of said first piezoelectric ceramic layer of said first friction braking means;actuating means for generating a first brake force demand input signal for said controlling means, said actuating means comprising;a mechanical input device for generating a variable mechanical signal;an electrical signal generator for generating a first brake force demand input signal proportional to said variable mechanical signal;said electrical signal generator being in mechanical communication with said mechanical input device and in electrical communication with said input side of said electric controller;a first wheel slip sensing means for determining a first wheel-road slippage condition, said first wheel slip sensing means comprising:a first wheel speed sensor for sensing a peripheral wheel speed;said first wheel speed sensor having an output signal proportional to said peripheral wheel speed;first slip computing means for computing an acceleration and a vehicle body speed;said first slip computing means comparing said sensed peripheral wheel speed to said computed acceleration and said computed vehicle body speed to determine if said first wheel-road slippage condition exists; andfirst signal generation means for generating a second brake force demand input signal indicative of said first wheel-road slippage condition;said first signal generation means being in electrical communication with said input side of said electric controller;whereby electrically energizing said first friction braking means moves said friction braking means into contact with said first moveable member;and whereby a first braking force is generated by moving said first friction braking means into contact with said first moveable member.

이 특허에 인용된 특허 (21) 인용/피인용 타임라인 분석

Fox Robert L. ; Hellbaum Richard F. ; Bryant Robert G. ; Copeland ; Jr. Benjamin M., Advanced layered composite polylaminate electroactive actuator and sensor.
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Ohta Ryuji (Kamifukuoka JPX) Kobayashi Michio (Hiki JPX), Brake apparatus.
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Imoto Yuzo (Kariya JPX) Takei Toshihiro (Okazaki JPX) Hattori Yoshiyuki (Toyoake JPX) Uno Haruhiko (Anjo JPX) Inagaki Mitsuo (Okazaki JPX) Takeda Kenji (Aichi JPX), Brake control apparatus for vehicle.
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Schenk Donald E. (Vandalia OH) McGraw Doonan D. (Naples FL), Brake control system.
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Maron Christof,DEX ; Prinzler Hubertus,DEX ; Dieckmann Thomas,DEX, Brake system for a motor vehicle.
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Prinzler Hubertus,DEX ; Maron Christof,DEX ; Dieckmann Thomas,DEX, Electrically controllable brake system.
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Mohr Kurt (Halsenbach/Ehr DEX) Seuser Ulrich (Neuwied DEX), Electronically controllable braking system for ground vehicles and method for operating same.
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Kuroyanagi Masatoshi (Kariya JPX) Matsui Kazuma (Toyohashi JPX) Majima Youzou (Kariya JPX) Murakami Fumiaki (Kariya JPX), Electronically controlled braking system without a master cylinder.
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Ide Russell D. (P.O. Box 744 ; 641 Arnold Rd. Coventry RI 02816), Friction pad for friction engagement device.
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Testardi David A. (7230 Pimmit Ct. Falls Church VA 22043), High performance anti-lock brake system for original equipment and after-market applications.
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Murata Yukio,JPX ; Yamada Hajime,JPX, Magnetostrictive brake.
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Haertling Gene H. (Central SC), Method for making monolithic prestressed ceramic devices.
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Face ; Jr. Samuel A. ; Clark Stephen E., Method for manufacturing multi-layered high-deformation piezoelectric actuators and sensors.
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Kitagawa Masashi (Tochigi JPX) Fujita Yasuhiko (Tochigi JPX) Arai Toshiaki (Tochigi JPX), Motor vehicle brake system with fail-safe mechanism.
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Yamatoh Kouhei (Saitama JPX) Ogura Masami (Saitama JPX) Kanbe Katunori (Saitama JPX) Isogai Yuji (Saitama JPX), Piezoelectric brake device.
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Sauvageot Jean-Claude (Rueil-Malmaison FRX) Merletti Didier (Les-Clayes-Sous-Bois FRX) Louviot Jean-Francois (Sevres FRX), Pressure-generating device for braking circuits of motor vehicles.
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Takano Toshiyuki,JPX ; Fukuda Motoi,JPX ; Satake Toshimi,JPX, Printing paper coated with low-molecular anionic acrylamide and method of producing same.
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Bishop Richard P, Snap-action ferroelectric transducer.
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Hellbaum Richard F. (Hampton VA) Bryant Robert G. (Poquoson VA) Fox Robert L. (Hayes VA), Thin layer composite unimorph ferroelectric driver and sensor.
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Klein Hans-Christof (Hattersheim DEX), Vehicle brake system.
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Imoto Yuzo (Kariya JPX) Hattori Yoshiyuki (Toyoake JPX) Takei Toshihiro (Okazaki JPX) Tanaka Taro (Nagoya JPX), Vehicle braking control apparatus.
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이 특허를 인용한 특허 (13) 인용/피인용 타임라인 분석

Yoon, Dae Keun; Lee, Kwang Kyu; Kim, Shin Young; Cho, Jai Hi; You, Bum Jae, Apparatus for interacting with external device by using pedal module.
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Yokoyama,Atsushi; Nishigaito,Takaomi; Kadomukai,Yuzo; Ichinose,Masanori; Matsubara,Kenichiro; Manaka,Toshio; Ueki,Nobuyuki, Brake device for vehicle.
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Takahashi,Kimio; Sekiguchi,Kazuhiro; Takahashi,Hideaki, Electric brake device.
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Ortman, Michael J.; Anderson, Steven; Schwaigert, Eric, Electric brake system with flexible force transfer member.
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Pistor, Klaus; Schmidt, Frank, Energy self-sufficient radiofrequency transmitter.
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Pistor, Klaus; Schmidt, Frank, Energy self-sufficient radiofrequency transmitter.
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D철llgast,Bernhard, Flat actuator or sensor with internal prestress.
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Rastegar, Jahangir S; Fischer, Jacques; Feng, Dake, High-G shock testing machine.
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Beulich,Siegfried; Wagner,Hans Albert; Kirchberger,Andreas, Integral braking system for motorcycles.
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Semsey, Ákos; Döricht, Michael, Method for the automatic control of wheel brake-slip and wheel brake-slip control system for a motor vehicle with an electric drive.
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Stehle, Bjoern; Schweizer, Alexander; Kuestler, Gerald, Process of controlling a drive train of a motor vehicle.
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Jayasuriya, Mangala A.; Lippman, Mark Allan, Systems and methods for pressure actuated pedal control.
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Albsmeier, Andre; Bulst, Wolf-Eckhart; Pistor, Klaus; Schmidt, Frank; Sczesny, Oliver, Wireless sensor system.
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A	생활필수품
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A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Anti-lock brake system with piezoelectric brake actuator 원문보기