In this paper, a control design synthesis is presented for processes modeled by a first-order time-varying lag with a time-varying delay. The basis of the proposed control method is a feedforward-feedback control system in which its stability, both in continuous and discrete time domains, is first proved in the absence of the time delay. A predictive model with an adaptive horizon is then introduced to address the effect of the time-varying delay. The system’s closed-loop response is demonstrated for fueling control in lean-burn gasoline spark ignition engines with varying transport and combustion delays. The developed methodology is validated on a Ford F-150 SI lean-burn engine model with large time-varying delay in the control loop.
- Dynamic Systems and Control Division
A Predictive Strategy to Control Time-Varying Delay Systems: Lean-Burn Engines
Mohammadzaheri, M, Tafreshi, R, Ebrahimi, B, Grigoriadis, K, & Franchek, MA. "A Predictive Strategy to Control Time-Varying Delay Systems: Lean-Burn Engines." Proceedings of the ASME 2015 Dynamic Systems and Control Conference. Volume 3: Multiagent Network Systems; Natural Gas and Heat Exchangers; Path Planning and Motion Control; Powertrain Systems; Rehab Robotics; Robot Manipulators; Rollover Prevention (AVS); Sensors and Actuators; Time Delay Systems; Tracking Control Systems; Uncertain Systems and Robustness; Unmanned, Ground and Surface Robotics; Vehicle Dynamics Control; Vibration and Control of Smart Structures/Mech Systems; Vibration Issues in Mechanical Systems. Columbus, Ohio, USA. October 28–30, 2015. V003T46A004. ASME. https://doi.org/10.1115/DSCC2015-9868
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