Adaptive fault estimation for the motorized cylinder of the Electro- Hydraulic Braking system with disturbances

This paper develops a novel robust finite time adaptive parameter estimator for motorized cylinder of the Electro-Hydraulic Braking system to estimate the faults extent. For the purpose of designing the fault estimator, the fault dynamics model of the motorized cylinder combined with disturbances and uncertainties is constructed. Then, a novel robust finite time adaptive parameter estimator based on the parameter estimation error is proposed via a exponential power form to achieve finite time convergence. Moreover, the finite time convergence property with disturbances is proved by input-to-state stability(ISS) theory in this paper. Finally, the simulation results of the fault estimation are demonstrated to validate the effectiveness of our estimator algorithm.