The objective of this project is to create a realistic, real-time, electrical
engineering virtual laboratory for the use of disabled students. This project
targets individuals who do not have adequate mobility of their upper bodies to
perform laboratory experiments. To provide a more realistic and enhanced
learning experience, the users of the virtual laboratory are allowed the freedom
to build an... hiện toàn bộ
An adjusted step size LMS (least mean squares) algorithm is proposed for
possible improvements in the performance of adaptive FIR filters in
nonstationary environments. Nonstationary signals means that the statistical
properties of the noise changes in time such as the high frequency channel time
variations. In the paper, an adaptive noise canceller is proposed which is based
on signal to noise ra... hiện toàn bộ
Fault tolerance is a critical issue for teleoperated or autonomous robotic
systems that are operating in hazardous and/or remote environments where joint
failures are likely. A single joint failure can render an otherwise dexterous
manipulator useless. In this article, we examine two measures of fault
tolerance. In addition to determining optimally fault tolerant configurations,
these measures can... hiện toàn bộ
#Fault tolerance #Orbital robotics #Jacobian matrices #Sea measurements #Robot sensing systems #Actuators #Manipulator dynamics #Fault tolerant systems #Null space #Kinematics
This paper deals with the magnetic modeling of a type of linear variable
reluctance motor. The motor under study is a three-phase motor that exhibits
strong magnetic coupling between its phases. Two modeling techniques are used:
the magnetic circuit analysis is emphasized due to its simplicity and
computational efficiency; and the finite element analysis is used primarily to
provide accurate bench... hiện toàn bộ
In this paper, some of the advantages and disadvantages of the use of
wavelet-like basis functions are discussed. Two modifications for mitigating
some of the disadvantages are considered. Numerical results obtained using these
modifications are presented.
#Finite element methods #Multiresolution analysis #Sparse matrices #Iterative methods #Wavelet analysis #Wavelet domain #Differential equations #Convergence of numerical methods #Gradient methods #Cost function
In this article we survey some recent work on the problem of realizing a spatial
stiffness matrix with a parallel connection of springs. The techniques described
here can be used to realize an arbitrarily specified stiffness dominated spatial
impedance through the use of a mechanism constructed of passive springs. The
article includes a discussion on how to rind an optimal realization of a
positiv... hiện toàn bộ
#Springs #Robotic assembly #Manipulators #Symmetric matrices #Robots #Force control #Fasteners #Educational institutions #Impedance #Position control
Punctured convolutional codes (PCCs) are necessary for applications requiring
high data transmission rate. For efficient high rate codes, PCCs have been
widely used to reduce the implementation complexity of the Viterbi decoder. The
codes provide good bit-error-rate (BER) performance. A slowly time-varying
frequency non-selective Rician fading channel is assumed. A finite-state Markov
chain is use... hiện toàn bộ
Gain-scheduled linear-affine control allocation functions /spl delta//sub
c/=F(x)/spl tau//sub c/+/spl delta//sub 0/(x) are inherently inaccurate due to
inherent limits of performance of the design process. As a result, online CA
correction is required, either in terms of adaptive methods, e.g., system
identification, or time-invariant methods, e.g., /spl Hscr//sub /spl infin//
control. We investi... hiện toàn bộ
#Vehicle dynamics #Vehicles #Torque control #Aerodynamics #Vectors #Adaptive control #System identification #Actuators #Least squares approximation #Linear programming
Bài báo này đề cập và thảo luận về cách thức mà Kiểm soát Phát điện Tự động
(AGC) được hình thành trước và sau khi giải phóng thị trường. AGC là một trong
số các dịch vụ được gọi là dịch vụ hỗ trợ, được định nghĩa bởi Ủy ban Điều tiết
Năng lượng Liên bang Mỹ (FERC). Để cho phép truy cập truyền tải mở và khuyến
khích một thị trường điện lực bán buôn cạnh tranh, việc giải phóng thị trường đã
được FE... hiện toàn bộ
#Kiểm soát phát điện tự động #Kết nối mạch tích hợp #Hệ thống điều khiển #Độ tin cậy của hệ thống điện #Các hệ thống điện #Sản xuất điện #Hội đồng #Bắc Mỹ #Kiểm soát hệ thống điện #Ngành công nghiệp điện.
Independent component analysis (ICA) is a statistical and computational
technique for revealing hidden or underlying factors in data. The independent
components or sources can be found using ICA provided that all components are
independent and non-Gaussian.