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Iterative Learning Control for a Fully Flexible Valve Actuation in a Test Cell
ISSN: 1946-4614, e-ISSN: 1946-4622
Published April 16, 2012 by SAE International in United States
Citation: Wu, H., Chen, J., Li, M., Durrett, R. et al., "Iterative Learning Control for a Fully Flexible Valve Actuation in a Test Cell," SAE Int. J. Passeng. Cars - Electron. Electr. Syst. 5(1):55-61, 2012, https://doi.org/10.4271/2012-01-0162.
An iterative learning control (ILC) algorithm has been developed for a test cell electro-hydraulic, fully flexible valve actuation system to track valve lift profile under steady-state and transient operation. A dynamic model of the plant was obtained from experimental data to design and verify the ILC algorithm. The ILC is implemented in a prototype controller. The learned control input for two different lift profiles can be used for engine transient tests. Simulation and bench test are conducted to verify the effectiveness and robustness of this approach. The simple structure of the ILC in implementation and low cost in computation are other crucial factors to recommend the ILC. It does not totally depend on the system model during the design procedure. Therefore, it has relatively higher robustness to perturbation and modeling errors than other control methods for repetitive tasks.