The Experts below are selected from a list of 53811 Experts worldwide ranked by ideXlab platform
Walter C. Merrill - One of the best experts on this subject based on the ideXlab platform.
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A demonstration of an Intelligent Control System for a reusable rocket engine
1992Co-Authors: Jeffrey L. Musgrave, Daniel E. Paxson, Jonathan S. Litt, Walter C. MerrillAbstract:Abstract : An Intelligent Control System for reusable rocket engines is under development at NASA Lewis Research Center. The primary objective is to extend the useful life of a reusable rocket propulsion System while minimizing between flight maintenance and maximizing engine life and performance through improved Control and monitoring algorithms and additional sensing and actuation. This paper describes current progress towards proof-of-concept of an Intelligent Control System for the Space Shuttle Main Engine. A subset of identifiable and accommodatable engine failure modes is selected for preliminary demonstration. Failure models are developed retaining only first order effects and included in a simplified nonlinear simulation of the rocket engine for analysis under closed loop Control. The engine level coordinator acts as an interface between the diagnostic and Control Systems, and translates thrust and mixture ratio commands dictated by mission requirements, and engine status (health) into engine operational strategies carried out by a multivariable Control. Control reconfiguration achieves fault tolerance if the nominal (healthy engine) Control cannot. Each of the aforementional functionabilities is discussed in the context of an example to illustrate the operation of the System in the context of a representative failure. A graphical user interface allows the researcher to monitor the Intelligent Control System and engine performance under various failure modes selected for demonstration.
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An Intelligent Control System for rocket engines: need, vision, and issues
IEEE Control Systems, 1991Co-Authors: Carl F. Lorenzo, Walter C. MerrillAbstract:Several components of intelligence are defined. Within the context of these definitions an Intelligent Control System for rocket engines is described. The description includes a framework for development of an Intelligent Control System, including diagnostics, coordination, and direct Control. Some current results and issues are presented. >
Ren Rui - One of the best experts on this subject based on the ideXlab platform.
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An “Illumination Moving with the Vehicle” Intelligent Control System of Road Tunnel Lighting
Sustainability, 2020Co-Authors: Wang Yaqiong, Cui Yiwei, Chen Feng, Ren RuiAbstract:To reduce the enormous waste of electric energy in tunnel lighting, an Intelligent Control System of road tunnel lighting which can realize the effect of illumination moving with the vehicle is proposed. In this System, the group Control of LED lamps is realized based on Air Lamp lighting technology through the wide area fusion Internet of Things (WF-IoT). By the group Control of LED lamps, the tunnel lighting is divided into several illumination segments. When the vehicle is detected by the surveillance camera, the corresponding LED group can be adjusted to the demand luminance according to the environmental conditions and traffic information. The other LED groups maintain 10% of the maximum luminance to reduce energy consumption. To realize the effect of illumination moving with the vehicle, the structure of the Intelligent Control System and hardware System is designed, and the length of the illumination segment is calculated. To evaluate the lighting effect of the Intelligent Control System, a simulation model of tunnel lighting is established. In addition, the energy-saving effect of the Intelligent Control System is evaluated. The results show that the Intelligent Control System can meet the requirements of illumination in a tunnel and have a notable energy-saving effect.
Pan San-bo - One of the best experts on this subject based on the ideXlab platform.
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Application of solar photovoltaic power in Intelligent Control System
Chinese Journal of Power Sources, 2011Co-Authors: Pan San-boAbstract:A joint-powered miniwatt and low-power Intelligent Control System power supply by a solar photovoltaic cells and batteries was designed in this paper.The working principle of solar cells and the four-stage charging process of battery were described,the switch circuit between a solar cell and battery was designed,and the specific circuit for the four-stage charging process with UC3909 as the core was proposed.Finally,the test prototype was applied to the Intelligent temperature Control System in the studio.The results show that the design meets the requirements of a miniwatt,low-power Intelligent Control System with a practical application,especially for the power shortage in remote mountainous areas.
Carl F. Lorenzo - One of the best experts on this subject based on the ideXlab platform.
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An Intelligent Control System for rocket engines: need, vision, and issues
IEEE Control Systems, 1991Co-Authors: Carl F. Lorenzo, Walter C. MerrillAbstract:Several components of intelligence are defined. Within the context of these definitions an Intelligent Control System for rocket engines is described. The description includes a framework for development of an Intelligent Control System, including diagnostics, coordination, and direct Control. Some current results and issues are presented. >
Wang Yaqiong - One of the best experts on this subject based on the ideXlab platform.
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An “Illumination Moving with the Vehicle” Intelligent Control System of Road Tunnel Lighting
Sustainability, 2020Co-Authors: Wang Yaqiong, Cui Yiwei, Chen Feng, Ren RuiAbstract:To reduce the enormous waste of electric energy in tunnel lighting, an Intelligent Control System of road tunnel lighting which can realize the effect of illumination moving with the vehicle is proposed. In this System, the group Control of LED lamps is realized based on Air Lamp lighting technology through the wide area fusion Internet of Things (WF-IoT). By the group Control of LED lamps, the tunnel lighting is divided into several illumination segments. When the vehicle is detected by the surveillance camera, the corresponding LED group can be adjusted to the demand luminance according to the environmental conditions and traffic information. The other LED groups maintain 10% of the maximum luminance to reduce energy consumption. To realize the effect of illumination moving with the vehicle, the structure of the Intelligent Control System and hardware System is designed, and the length of the illumination segment is calculated. To evaluate the lighting effect of the Intelligent Control System, a simulation model of tunnel lighting is established. In addition, the energy-saving effect of the Intelligent Control System is evaluated. The results show that the Intelligent Control System can meet the requirements of illumination in a tunnel and have a notable energy-saving effect.
