Abstract—An enhanced polynomial-based parametric model of
an eddy current electric machine for automotive braking applications
has been introduced in this paper. The parametric model captures
the steady state torque-speed-current characteristics of the
eddy current brake. A two-stage estimation process has been introduced
to identify the coefficients of the retarder model from experimental
data through a least square type algorithm. The model
is then validated via on-vehicle test data. A controller to generate
eddy current machine command can be designed using the proposed
parametric model which could be computationally more efficient.
Index Terms—Brake-by-wire, closed-loop control, eddy current
machine, electromagnetic torque model, nonlinear steady state
model, parameter estimation.