Efficient tuning scheme of mode-switching-based powertrain oscillation controller considering nonlinear backlash

For enhancement of the drivability and lifetime components, reduction in vehicle driveline oscillations has been addressed by advanced active control algorithms. However, most existing works involve subjective determination their critical controller parameters, imposing heavy adjustment tasks on designers. This research presents an efficient tuning algorithm model-based vibration that explicitly considers adverse influences due to nonlinear backlash. First, a dynamics model with dead-zone effect backlash is established. A dynamic output feedback H2 designed as baseline attenuate low-frequency resonance driveline. simple mode switching combined deal nonlinearity. The optimal values important design parameters included system are automatically searched computationally algorithm, i.e., simultaneous perturbation stochastic approximation (SPSA). proposed oscillation tuned SPSA validated via several simulation tests. robustness evaluated for various patterns fluctuations such length backlash, driving conditions. Moreover, compared traditional controllers including proportional integral differential (PID) Ziegler-Nichols method. As result, improvement suppression performance well its originating from compensation revealed.