Variable Rate Pedal Feel Emulator Designs for a Brake-By-Wire System 1999-01-0481
An important element of a brake-by-wire system is the pedal feel emulator. This device is tuned for each vehicle application to provide the desired pedal force/travel relationship while operating the brake system in the normal powered mode. The two designs examined apply to a hydraulic based brake-by-wire system and are used in conjunction with a master cylinder to meet failed power braking requirements. Both designs use uniquely different spring technologies to provide a variable rate curve to simulate the pedal feel characteristics of a conventional vacuum boosted brake system.
James W. Zehnder, Shekhar S. Kanetkar, Craig A. Osterday
Delphi Automotive Systems - Chassis Systems
International Congress & Exposition
Car Technology Yearbook 2000-CTY2000, Brake Technology and ABS/TCS Systems-SP-1413, Electronic Braking, Traction, and Stability Controls-PT-76, SAE 1999 Transactions - Journal of Passenger Cars-V108-6