An electromechanical steering system is investigated that permits by-wire technology with the advantage of mechanical steering system in the event of electronic failure. In this paper areal-time failure detection and diagnosis (FDD) scheme is described. This FDD algorithm uses a combination of dynamic techniques and heuristics to detect disconnected or jammed sensors, and biased or noisy signals that could deteriorate the system's performance if they remained undetected. The algorithm is aplied to the Dynamically Decoupled Steering (DDS) system. The DDS system is a two-input-one-output electro-mechanical system containing two active control elements. A differential gear set provides an interface between the driver, the control elements and the steering rack. Steering control is achieved by a combination of the two active control inputs, determined after interpreting the driver's steering command at the steering column.
Dynamically decoupled steering: A fail safe steer-by-wire system
Dynamich entkoppelte Lenkung: Ein ausfallsicheres elektronisches Lenksystem
ISATA, 20th In. Symp. on Automotive Technology and Automation ; 2 , Jun ; 1527-1543
1989
17 Seiten, 7 Bilder
Aufsatz (Konferenz)
Englisch
Dynamically decoupled steering:a fail safe steer-by-wire system
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