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A free-piston engine (FPE) requires stabilizing feedback control to manage piston motion and ensure safe operation. A high-fidelity model, which simulates the FPE behavior by combining dynamic, thermodynamic, and hydraulic submodels, is exploited as an engine surrogate for control development. A control-oriented model implicitly describes the FPE piston turnaround position using energy balance principles...
Precise control of piston turnaround location is essential for reliable free-piston engine (FPE) operation. In this paper we derive a discrete-time, control-oriented, implicit model that describes FPE clearance height behavior by applying an energy balance to the Otto cycle. We then design a state feedback controller using dynamic inversion that stabilizes the FPE system and ensures reference tracking...
The paper presents the results of a robust Model Predictive Control (MPC) development for the diesel engine air path. The objective is to regulate the intake manifold pressure (MAP) and exhaust gas recirculation (EGR) rate to the specified set-points by coordinated control of the variable geometry turbine (VGT), EGR valve, and EGR throttle. The approach uses tube-MPC to robustly enforce state constraints...
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