The Experts below are selected from a list of 741 Experts worldwide ranked by ideXlab platform
Efstratios N. Pistikopoulos - One of the best experts on this subject based on the ideXlab platform.
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output feedback parametric controllers for an active valve train actuation system
Conference on Decision and Control, 2006Co-Authors: Vassileios D Kosmidis, Vassilis Sakizlis, A Panga, G Charles, S Kenchington, Nikolaos A Bozinis, Efstratios N. PistikopoulosAbstract:The first commercial camless car engines featuring continuously variable valve timing are expected to be available by 2010 to meet the strict legislation on NOx and COx emissions. A key factor for the development of this technology is the design of controllers that can maintain accurate signal tracking in the presence of variations in engine parameters and running conditions. Towards this direction, we present a control design methodology and a new control implementation of an advanced optimizing parametric controller (Parco) for a research active valve train system at Lotus Engineering. The controller is based on a mathematical model for the active valve train and is derived off-line using novel parametric programming techniques. The simple explicit form of the controller enables its implementation on the currently available commercial microprocessor with sampling times of 0.1 ms. Simulation and experimental results demonstrated the superiority of the parametric controller in comparison with a conventional proportional derivative (PD) control scheme
T. Rodemann - One of the best experts on this subject based on the ideXlab platform.
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1Lotus Engineering Software – An Approach to Model-Based Design
2015Co-Authors: R. J. Pearson, M. D. Bassett, N. P. Fleming, T. RodemannAbstract:Model-based design processes are key to the reduction of time scales for new vehicle and engine programmes. Lotus Engineering has developed a suite of simulation tools which enable shorter product analysis cycles through the facility to build models rapidly and take the user within close proximity of the final design. The software suite includes Lotus Vehicle Simulation, Lotus Engine Simulation, and Lotus Concept Valve Train. These tools can be used in harness with ADAMS/Engin
Stewart Jill - One of the best experts on this subject based on the ideXlab platform.
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A novel genetic programming approach to the design of engine control systems for the voltage stabilization of hybrid electric vehicle generator outputs
'SAGE Publications', 2011Co-Authors: Gladwin Daniel, Stewart Paul, Stewart JillAbstract:This paper describes a Genetic Programming based automatic design methodology applied to the maintenance of a stable generated electrical output from a series-hybrid vehicle generator set. The generator set comprises a three-phase AC generator whose output is subsequently rectified to DC. The engine/generator combination receives its control input via an electronically actuated throttle, whose control integration is made more complex due to the significant system time delay. This time delay problem is usually addressed by model predictive design methods, which add computational complexity and rely as a necessity on accurate system and delay models. In order to eliminate this reliance, and achieve stable operation with disturbance rejection, a controller is designed via a Genetic Programming framework implemented directly in Matlab and, particularly, Simulink. The principal objective is to obtain a relatively simple controller for the time-delay system which does not rely on computationally expensive structures, yet retains inherent disturbance rejection properties. A methodology is presented to automatically design control systems directly upon the block libraries available in Simulink to automatically evolve robust control structures.The authors would like to acknowledge the support provided by Lotus Engineering Ltd, and EPSRC Grant: GR/S97507/01 ‘Zero Constraint Free Piston Energy Converter’
Vassileios D Kosmidis - One of the best experts on this subject based on the ideXlab platform.
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output feedback parametric controllers for an active valve train actuation system
Conference on Decision and Control, 2006Co-Authors: Vassileios D Kosmidis, Vassilis Sakizlis, A Panga, G Charles, S Kenchington, Nikolaos A Bozinis, Efstratios N. PistikopoulosAbstract:The first commercial camless car engines featuring continuously variable valve timing are expected to be available by 2010 to meet the strict legislation on NOx and COx emissions. A key factor for the development of this technology is the design of controllers that can maintain accurate signal tracking in the presence of variations in engine parameters and running conditions. Towards this direction, we present a control design methodology and a new control implementation of an advanced optimizing parametric controller (Parco) for a research active valve train system at Lotus Engineering. The controller is based on a mathematical model for the active valve train and is derived off-line using novel parametric programming techniques. The simple explicit form of the controller enables its implementation on the currently available commercial microprocessor with sampling times of 0.1 ms. Simulation and experimental results demonstrated the superiority of the parametric controller in comparison with a conventional proportional derivative (PD) control scheme
R. J. Pearson - One of the best experts on this subject based on the ideXlab platform.
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1Lotus Engineering Software – An Approach to Model-Based Design
2015Co-Authors: R. J. Pearson, M. D. Bassett, N. P. Fleming, T. RodemannAbstract:Model-based design processes are key to the reduction of time scales for new vehicle and engine programmes. Lotus Engineering has developed a suite of simulation tools which enable shorter product analysis cycles through the facility to build models rapidly and take the user within close proximity of the final design. The software suite includes Lotus Vehicle Simulation, Lotus Engine Simulation, and Lotus Concept Valve Train. These tools can be used in harness with ADAMS/Engin
