LPV Delay-Dependent Sampled-Data Output-Feedback Control of Fueling in Spark Ignition Engines

We propose a delay-dependent sampled-data output-feedback LPV control technique to address the air-fuel ratio (AFR) regulation problem in spark ignition (SI) engines. AFR and advanced fueling strategies are essential for maximizing fuel economy while minimizing harmful exhaust emissions. The path of SI engine, as well three-way catalyst (TWC) simplified dynamics, have been captured by continuous-time linear parameter-varying (LPV) system with varying time delay, where dynamics rely on engine speed, defined system's scheduling parameter. interconnection plant digital controller through analog-to-digital digital-to-analog converter devices forms hybrid closed-loop configuration. Therefore, order benefit from synthesis tools, input-delay method has employed transform into domain inherent delay an additional imposed mapping approach. designed gain scheduled seeks establish asymptotic stability prescribed level performance arbitrarily sampling time, results provided convex matrix inequality (LMI) constraint setting. Finally, several simulation scenarios conducted, comparisons demonstrate proposed methodology's achieving precise reference tracking disturbance attenuation.