Discrete angular torque observer applicated to the engine torque and clutch torque estimation via a dual-mass flywheel

The interest in engine torque and clutch torque estimation is important in the automotive industry. They are determinant variables in engine and powertrain management like hybrid engine vehicle, automated transmission and energy saving strategies. An instantaneous brake engine torque and transmitted clutch torque estimation method based on discrete angular domain fuzzy observer using a torsion angle calculation is proposed in this paper. It is applied on a filtration device; the dual mass flywheel. The observer permits to obtain good experimental results of the engine torque and clutch torque estimation.