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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

Multiple ARX Model Based Identification for Switching/Nonlinear Systems with EM Algorithm

Jin, Xing Unknown Date
No description available.
32

Model predictive control of a thermoelectric-based heat pump.

Petryna, Stephen 01 December 2013 (has links)
Government regulations and growing concerns regarding global warming has lead to an increasing number of passenger vehicles on the roads today that are not powered by the conventional internal combustion (IC) engine. Automotive manufacturers have introduced electric powertrains over the last 10 years which have introduced new challenges regarding powering accessory loads historically reliant on the mechanical energy of the IC engine. High density batteries are used to store the electrical energy required by an electric powertrain and due to their relatively narrow acceptable temperature range, require liquid cooling. The cooling system in place currently utilizes the A/C compressor for cooling and a separate electric element for heating which is energy expensive when the source of energy is electricity. The proposed solution is a thermoelectric heat pump for both heating and cooling. A model predictive controller (MPC) is designed, implemented and tested to optimize the operation of the thermoelectric heat pump. The model predictive controller is chosen due to its ability to accept multiple constrained inputs and outputs as well as optimize the system according to a cost function which may consist of any parameters the designer chooses. The system is highly non-linear and complex therefore both physical modelling and system identi cation were used to derive an accurate model of the system. A steepest descent algorithm was used for optimization of the cost function. The controller was tested in a test bench environment. The results show the thermoelectric heat pump does hold the battery at the speci ed set point however more optimization was expected from the controller. The controller fell short of expectation due to operational restriction enforced during design meant to simplify the problem. The MPC controller is capable of much better performance through adding more detail to the model, an improved optimization algorithm and allowing more flexibility in set point selection.
33

System identification of general aviation aircraft using the filter error technique /

Patel, Dakshesh, January 2007 (has links) (PDF)
Thesis (M.S.)--Auburn University, 2007. / Abstract. Vita. Includes bibliographic references (ℓ. 91-98)
34

Sampled-data frequency response system identification for large space structures

Hammond, Thomas T. January 1988 (has links)
Thesis (M.S.)--Ohio University, June, 1988. / Title from PDF t.p.
35

Nonlinear system identification /

Ziegler, Edward H. January 1994 (has links)
Thesis (M.S.)--Rochester Institute of Technology, 1994. / Typescript. Includes bibliographical references (leaves 104-105).
36

Investigation of different approaches for identification and control of complex and nonlinear systems using neural networks /

Tripathi, Nishith D., January 1994 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1994. / Vita. Abstract. Includes bibliographical references (leaves 107-113). Also available via the Internet.
37

System identification and control of the standpipe in a cold flow circulating fluidized bed

Park, Ju-chirl. January 1900 (has links)
Thesis (Ph. D.)--West Virginia University, 2004. / Title from document title page. Document formatted into pages; contains xiv, 98 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 91-98).
38

Modeling and real-time feedback control of MEMS device

Wang, Limin, January 2004 (has links)
Thesis (Ph. D.)--West Virginia University, 2004. / Title from document title page. Document formatted into pages; contains v, 132 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 128-132).
39

Computationally efficient weighted updating of statistical parameter estimates for time varying signals with application to power system identification

Tuffner, Francis K. January 2008 (has links)
Thesis (Ph.D.)--University of Wyoming, 2008. / Title from PDF title page (viewed on August 5, 2009). Includes bibliographical references (p. 312-316).
40

Identification of stationary/nonstationary systems using artificial neural networks /

Park, Dong Chul. January 1990 (has links)
Thesis (Ph. D.)--University of Washington, 1990. / Vita. Includes bibliographical references (leaves [105]-112).

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