In this paper, we provide a new noise reduction method for the enhancement of the images of gene chips. We demonstrate that the new technique is capable of reducing outliers present in microarray images while preservi...
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UTMAC is an object-oriented C++ class library, developed for design, implementation and simulation of multi-agent controllers. Using UTMAC, the control problem under analysis should be decomposed into several partial ...
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UTMAC is an object-oriented C++ class library, developed for design, implementation and simulation of multi-agent controllers. Using UTMAC, the control problem under analysis should be decomposed into several partial sub-problems to be solved by controller-agents, which can be implemented as reusable entities. UTMAC uses a non-centralized simulation scheme in which cash agent simulates itself. In this paper the structure of UTMAC is explored and design of a simple reusable multi-agent controller is provided to illustrate the work and show the convenience of design and implementation.
AlGaN/GaN double heterostructure high electron mobility transistors (DH-HEMT's) with a 2.0 /spl mu/m gate length and a 4 /spl mu/m channel length, exhibiting good temperature characteristics, have been demonstrate...
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AlGaN/GaN double heterostructure high electron mobility transistors (DH-HEMT's) with a 2.0 /spl mu/m gate length and a 4 /spl mu/m channel length, exhibiting good temperature characteristics, have been demonstrated. The maximum drain current I/sub ds/ and extrinsic transconductance G/sub m/ are 1300 mA/mm 235 mS/mm, 85.0 mA/mm 174 mS/mm, and 475 mA/mm, 95 mS/mm, respectively at T = -194/spl deg/C, 20/spl deg/C and 400/spl deg/C. The temperature coefficient of I/sub ds/ and G/sub m/ are -1.4 mA//spl deg/C and 0.24 mS//spl deg/C respectively.
This paper reports on the development of a training simulator focusing on voltage control and stability. It has been derived from a quasisteady-state simulation software already used and validated in planning and oper...
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This paper reports on the development of a training simulator focusing on voltage control and stability. It has been derived from a quasisteady-state simulation software already used and validated in planning and operational planning studies. The computational engine has been provided with a user interface built on the client-server architecture, allowing the simulator to run on a network of PCs in a very flexible way. New displays can be set up easily and quickly. This tool is presently used by Hydro-Quebec to improve the operator's ability to control transmission voltages. Other features, uses and benefits are reported.
In this paper, we consider robust regulation of a class of nonlinear systems, via H∞ controller using singular perturbation approach. First, using normal form equations, we eliminate the nonlinear part of the system ...
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Images are often contaminated by impulse noise. The major drawback of median filtering and its variants -that are widely used for removing impulsive noise- is the blurring effect for large window sizes and low noise s...
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We present robust stabilization results for constrained, discrete-time, nonlinear systems using a finite-horizon model predictive control (MPC) algorithm that does not require any particular properties for the termina...
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We present robust stabilization results for constrained, discrete-time, nonlinear systems using a finite-horizon model predictive control (MPC) algorithm that does not require any particular properties for the terminal cost. We introduce a property that characterizes the robustness properties of the MPC optimization problem. Assuming the system has this property (for which we give sufficient conditions), we make two further key assumptions. These are that the value function is bounded by a K/sub /spl infin// function of a state measure (related to the distance of the state to some target set) and that this measure is detectable from the stage cost used in the MPC algorithm. We show that these assumptions lead to stability that is robust to sufficiently small disturbances and measurement noise. While in general the results are semiglobal practical, when the detectability and upper bound assumptions are satisfied with linear K/sub /spl infin// functions, the stability and robustness is global with respect to the feasible set. We discuss algorithms employing terminal equality or inequality constraints. We provide two examples, one involving a terminal equality constraint and the other involving a nonrobustness-inducing state constraint.
In this paper, a simple neuro-controller for power systems is presented. The controller performs the function of the terminal voltage control. By representing the proposed neuro-controller in s-domain, its parameters ...
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Design of an optimal nonlinear state feedback voltage regulator for power systems is proposed in this paper. In order to obtain the nonlinear control law the Hamilton-Jacobi-Belman (HJB) equation is solved using Taylo...
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Dynamic control of parallel wheeled differential drive mobile robot is considered. The dynamic model is composed of two consecutive parts;kinematic model and equations of linear and angular torques. By transforming dy...
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