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Research Interests: Mechanical Engineering, Mathematics, Applied Mathematics, Computer Science, System Identification, and 12 moreDifferential Geometry, Geometry, Nonlinear Systems, Design Methodology, Robustness, Linearization, Change of State, Observer, Nonlinear system, Electrical And Electronic Engineering, Observer Design, and Non Linear Control
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Research Interests: Mathematics, Computer Science, Information Theory, Manufacturing, Convergence, and 14 moreParameter estimation, Sensors, Quantization, Mean square error, Bounded Variation, Sensor Fusion, Sensor Network, Nonparametric Regression, Noise Measurement, Distributed Source Coding, Ambient Noise, Almost Sure Convergence, Rate of Convergence, and Monte Carlo Sampling
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This brief studies the optimal codesign of nonlinear control systems: simultaneous design of physical plants and related optimal control policies. Nonlinearity of the optimal codesign problem could come from either a nonquadratic cost... more
This brief studies the optimal codesign of nonlinear control systems: simultaneous design of physical plants and related optimal control policies. Nonlinearity of the optimal codesign problem could come from either a nonquadratic cost function or the plant. After formulating the optimal codesign into a nonconvex optimization problem, an iterative scheme is proposed in this brief by adding an additional step of system-equivalence-based policy improvement to the conventional policy iteration. We have proved rigorously that the closed-loop system performance can be improved after each step of the proposed policy iteration scheme, and the convergence to a suboptimal solution is guaranteed. It is also shown that under certain conditions, this additional policy improvement step can be conducted by solving a quadratic programming problem. The linear version of the proposed methodology is addressed in the context of linear quadratic regulator. Finally, the effectiveness of the proposed meth...
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Page 1. Observer Design Using a Time Scaled Block Triangular Observer Form Yebin Wang and Alan F. Lynch AbstractThis paper presents an observer design for un-forced nonlinear multi-output systems using a Time Scaled Block Triangular... more
Page 1. Observer Design Using a Time Scaled Block Triangular Observer Form Yebin Wang and Alan F. Lynch AbstractThis paper presents an observer design for un-forced nonlinear multi-output systems using a Time Scaled Block Triangular Observer Form (TBTOF). ...
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Page 1. On the Existence of a Block Triangular Form Yebin Wang and Alan F. Lynch AbstractThis paper extends previously derived existence conditions for a Block Triangular Form (BTF). The BTF can be applied to a broad class of... more
Page 1. On the Existence of a Block Triangular Form Yebin Wang and Alan F. Lynch AbstractThis paper extends previously derived existence conditions for a Block Triangular Form (BTF). The BTF can be applied to a broad class of multi-output nonlinear systems. ...
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This paper considers the control design for a vibration reduction system using semi-active actuators to improve the ride quality. The main challenge comes from the nonlinear dynamics, limited control authority, and lack of... more
This paper considers the control design for a vibration reduction system using semi-active actuators to improve the ride quality. The main challenge comes from the nonlinear dynamics, limited control authority, and lack of performance-oriented nonlinear control design results. Two nonlinear controllers are proposed and compared to a conventional semi-active control. Simulation shows the proposed controls provide a good balance of 2- and ∞-norm metrics.
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This paper discusses observer design for unforced non-linear multi-output systems using a block triangular observer form (BTOF). The BTOF allows an established exact error linearization observer design method to be generalized to a larger... more
This paper discusses observer design for unforced non-linear multi-output systems using a block triangular observer form (BTOF). The BTOF allows an established exact error linearization observer design method to be generalized to a larger class of multi-output systems. Observer design proceeds in a decentralized manner, or subsystem-at-a-time, starting with the uppermost subsystem. Designs for each subsystem effectively treat upper subsystem states as known measurements and are relatively simple given their reduced dimension. Exponential error stability results are given. New necessary and sufficient existence conditions are given for the BTOF. Examples illustrate the construction of the BTOF coordinates and the advantages of a BTOF-based design compared to a generally applicable method.
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Page 1. On the Existence of a Block Triangular Form Yebin Wang and Alan F. Lynch AbstractThis paper extends previously derived existence conditions for a Block Triangular Form (BTF). The BTF can be applied to a broad class of... more
Page 1. On the Existence of a Block Triangular Form Yebin Wang and Alan F. Lynch AbstractThis paper extends previously derived existence conditions for a Block Triangular Form (BTF). The BTF can be applied to a broad class of multi-output nonlinear systems. ...
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Page 1. Observer Design Using a Time Scaled Block Triangular Observer Form Yebin Wang and Alan F. Lynch AbstractThis paper presents an observer design for un-forced nonlinear multi-output systems using a Time Scaled Block Triangular... more
Page 1. Observer Design Using a Time Scaled Block Triangular Observer Form Yebin Wang and Alan F. Lynch AbstractThis paper presents an observer design for un-forced nonlinear multi-output systems using a Time Scaled Block Triangular Observer Form (TBTOF). ...
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Abstract-We consider the problem of reconstructing a de-terministic data field from binary quantized noisy observations of sensors randomly deployed over the field domain. Our focus is on the extremes of lack of control in the sensor... more
Abstract-We consider the problem of reconstructing a de-terministic data field from binary quantized noisy observations of sensors randomly deployed over the field domain. Our focus is on the extremes of lack of control in the sensor deployment, arbitrariness and lack of knowledge of the ...