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
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.
False lock is a practical, often very perplexing, problem in phase-lock loops
(PLLs). When false lock occurs, the PLL may appear to be operating nominally;
the phase detector output may have a nominal (usually small) average value, and
a conventional lock detector may indicate a correct phase lock state. However, a
static average frequency error exists in the loop. While stable false lock
states a... hiện toàn bộ
A.D. Valkanas, P.I. Dallas, G.J. Karachalios, A.D. Poularikas
A special characteristic of multicarrier modulation techniques such as OFDM is
that they can assign different modulation schemes to each subcarrier according
to a reception quality measurement such as the signal-to-noise ratio (SNR) on a
subcarrier. This process allocates different bits to subcarriers and is further
known at the literature as bit loading. In the paper, a bit-loading algorithm
has ... hiện toàn bộ
#OFDM modulation #Modulation coding #System performance #Costs #Fading #Iterative algorithms #Channel capacity #Electric variables measurement #Signal to noise ratio #Bandwidth
K. Thangarajan, W. Mahmoud, E. Ososanya, P. Balaji
Branch prediction schemes have become an integral part of today's pipelined
processors. They are one of the key issues in enhancing the performance of
pipelined processors. Pipeline stalls due to conditional branches are one of the
most significant impediments to realizing the performance potential of deeply
pipelined and superscalar processors. Many schemes for branch prediction, that
can effecti... hiện toàn bộ
This paper presents different implementations of CORDIC algorithm on two field
programmable gate array (FPGA) families, namely Xilinx XC4000XLA and VIRTEX
series. Pipelining is used to improve the throughput and speed of the design.
Xilinx foundation computer aided design (CAD) tools are used for synthesis,
simulation and implementation on the FPGAs. A comparative study on the
performance of these... hiện toàn bộ
In this paper we apply discrete wavelet transform processing to the decision
feedback equalization adaptation problem. In particular, the discrete wavelet
transform decision feedback equalizer (DFE) performance and complexity are
compared to those of the least mean squares (LMS) and recursive least squares
(RLS) algorithms. We illustrate, using a simulation example, that the wavelet
transform DFE ... hiện toàn bộ
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
The paper is concerned with the application of subspace-stabilization control
theory to the missile guidance problem. In particular, the system error-state
vector is stabilized to a certain subspace of the error state-space such that
zero predicted miss-distance is achieved. The proposed control technique is
related to the classical proportional navigation and augmented proportional
navigation gui... hiện toàn bộ
#Navigation #Missiles #Acceleration #Geometry #Control theory #Motion control #Proportional control #Numerical simulation #Transfer functions #Virtual colonoscopy
Xiaofei Wu, T. Adami, J. Campbell, G. Jianwei, J.J. Zhu
For part I, see ibid., p.97-102 (2002). We present an attitude controller design
for a 3 DOF flight control experiment apparatus, the Quanser UFO, as an
application of the multi-input, multi-output (MIMO) nonlinear tracking and
decoupling control technique based on a trajectory linearization method. The
controller consists of two parts: a pseudo-inverse of the plant that computes
the nominal contr... hiện toàn bộ
#Design methodology #Attitude control #Trajectory #Error correction #Aerospace control #MIMO #Regulators #Tracking loops #Bandwidth #Testing
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