The paper addresses the problem of non-parametric estimation of the static characteristic in Wiener-Hammerstein (sandwich) system excited and disturbed by random processes. A new, kernel-like method is presented. The ...
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This paper describes a method of augmenting real-time ultrasound imagery with accurate 3D models computed earlier from sources richer in data - Computed Tomography (CT) or Magnetic Resonance (MR) images. The 3D models...
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Our aim is to consider the problem of allocating sensors and frequencies of their activation in such a way that the balance between the estimation accuracy of a scalar field and energy consumption is optimized. To thi...
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In the paper we recover a Hammerstein system nonlinearity. Hammerstein systems, incorporating nonlinearity and dynamics, play an important role in various applications, and effective algorithms determining their chara...
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In the note two recursive algorithms recovering the nonlinearity in Hammerstein systems are proposed. The algorithms are based on Haar wavelet orthogonal series kernels and are of the simple generic standard form: μc...
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The problem of nonlinear dynamic systems modelling by means of block-oriented models has been strongly elaborated for the last four decades, due to vast variety of applications. The concept of block-oriented models as...
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In this paper we show the process of a class of algorithms parallelization which are used in digital signal processing. We present this approach on the instance of the popular LMS algorithm which is used in noise redu...
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Our aim is to consider the problem of allocating sensors and frequencies of their activation in such a way that the balance between the estimation accuracy of a scalar field and energy consumption is optimized. To thi...
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Our aim is to consider the problem of allocating sensors and frequencies of their activation in such a way that the balance between the estimation accuracy of a scalar field and energy consumption is optimized. To this end we propose an extension of the theory of optimal experiment designs by including terms for transmission energy consumption or penalties for region coverage into the optimality criterion. We state the optimality conditions, which serve as a base for a numerical algorithm for searching sensors' positions and frequencies of their activations. Examples of optimal allocations for a variety of basis, spanning spatial fields, are also provided.
This paper describes a method of augmenting real-time ultrasound imagery with accurate 3D models computed earlier from sources richer in data - Computed Tomography (CT) or Magnetic Resonance (MR) images. The 3D models...
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This paper describes a method of augmenting real-time ultrasound imagery with accurate 3D models computed earlier from sources richer in data - Computed Tomography (CT) or Magnetic Resonance (MR) images. The 3D models are built for a number of phases of motion, therefore a collection of CT / MR scans needs to be taken or techniques such as Cine-MRI can be used. The ultrasound data is processed on-line and the phase of organ motion is estimated at each frame. That information is used to pick a nearest-match 3D model. In this paper we will examine the heart and its motion during its systole-diastole cycle as an example.
This paper describes a problem of designing control laws preserving a motion along desired path for doubly nonholonomic mobile manipulators. The doubly nonholonomic mobile manipulator is composed of a mobile platform ...
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ISBN:
(纸本)9789898425010
This paper describes a problem of designing control laws preserving a motion along desired path for doubly nonholonomic mobile manipulators. The doubly nonholonomic mobile manipulator is composed of a mobile platform moving without slipping effect between wheels and the surface (i.e. nonholonomic platform) and an onboard manipulator equipped with special nonholonomic gears, designed by Nakamura, Chung and Sørdalen. A task for any nonholonomic subsystem (i.e. nonholonomic platform or nonholonomic manipulator) is to follow a desired path - some geometric curve parameterized by curvilinear distance from selected point. A description of the nonholonomic subsystem relative to the desired path using so-called Frenet parametrization is a basis for formulating the path following problem and designing a kinematic control algorithm.
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