Fault-Tolerant Control of Automotive Systems Funded by NSF-GOALI, and by DELPHI Automotive, Inc. |
Collaborators: Prof. G.
Rizzoni, Mech.Eng, OSU, Dr. Laci Jalics, Delphi Automotive. |
Research Scientist: Dr. Pierluigi Pisu |
Graduate students supported: Siddharth D'Silva (PhD Candidate, supported by DELPHI) |
Expected completion of the
project: September 2005. |
Fault tolerance is a
critical element in “by-wire” automotive systems, as complex control
and diagnostic strategies are required to guarantee proper vehicle
behavior and to prevent system malfunctions. A significant roadblock
for safety-critical by-wire systems is the realization of a robust
fault-diagnostic strategy that can be accomplished quickly and with
limited or no additional hardware. We have investigated the problem of
fault detection and isolation for a brake-by-wire system in presence of
parameter uncertainty on the brake model. In this case, the main
problem lies in recognizing the occurrence of a fault from the nonzero
error residual due to the mismatch between the nominal plant model and
the actual plant dynamics. We have investigated the design of filters
with adaptive thresholds to reduce sensitivity of the fault detection
algorithm to parameter uncertainties. Results along these lines are
reported in [1], [2], and [3]. Currently, the work focuses on the
integration of robust fault detection and robust adaptive control
towards the development of fault-tolerant vehicle control
architectures.
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Relevant publications:
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