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| Fault-tolerant Control of High-speed Trains with Uncertain Parameters and Actuator Failures Using Control Reallocation and Adaptive Control |
| Tao Tao, Hongze Xu |
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Abstract Because of increased requirements on the reliability,
maneuverability and survivability of modern high-speed trains, more
and more advanced control theory is applied against actuator
failures. The control reallocation and adaptive control have long
been attracting research interest in the field of fault-tolerant
control, which is reflected in the design and development of
powerful and complex control systems against actuator failures. In
this paper we investigate the velocity tracking control problem of
high-speed trains with multiple vehicles connected through couplers
in the case of actuator failures. First, the multiple point-mass
model is built and the common actuator failures of the train
operation control system are divided into two types: stuck in a
fixed value and loss of effectiveness. When plant inputs are stuck
in a fixed value, a novel approach based on the control reallocation
theory is implemented to ensure the system stability and
performance. Meanwhile when the loss of the actuator effectiveness
occurs, a robust adaptive fault-tolerant control method is applied.
Then, the effectiveness of the proposed approach is also confirmed
through numerical simulations based on a train similar to China
Railways High-speed 5 (CRH5).
DOI: 10.12733/jics20101721
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