Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"sub-optimal controller"”.
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Hybrid Control For Aerospace Systems
… in elliptic orbits; 2. we design a robust time-sub-optimal controller for a class of linear systems emerging in aerospace applications where the control input is limited in magnitude; 3. we synthesize an observer to estimate the speed of rotary systems providing angular measurements that evolve …
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Optimization based control design techniques for distributed parameter systems
… theory are used to formulate a feedback controller. This control technique is demonstrated for heat equations and thermal convection loops. This technique is extended to address a practical issue of parameter uncertainty in a class of systems. An estimator is defined for unknown …
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Control of Vibratory Energy Harvesters in the Presence of Nonlinearities and Power-Flow Constraints
… will illustrate the performance of various controllers using two vibratory energy harvesting systems: an electromagnetic transducer embedded within a flexible structure, and a piezoelectric bimorph cantilever beam. Compared with piezoelectric systems, large-scale electromagnetic systems have …
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Learning and decentralized control in linear switched systems
… models. In this dissertation, we focus on the controller synthesis problem for interconnected systems and the application to physical systems. While there are many existing control theory tools to optimize the performance of systems with a centralized structure, we are interested in developing …
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X-ray microscope performance enhancement through control architecture change
… known as the Early User Instrument (EUI) was the subject of this work. It consists of X-ray optics stage group that focuses the X-ray beam as a source-size-limited spot onto a sample held on the sample stage group. The controller algorithms that are used should provide the closed-loop with robust …