lcd motor adc and sensor

... sen-sor pool, and dataY(j) k from a moving sensor pool The num-ber of sensors may be different in the fixed and the moving pools, and thus in each record j, the measurement vectors Y(0,j) k andY(j) ... covariance-driven input/output and output-only subspace-based algorithms have been developed for the purpose of structural identification, damage detection and diagnosis, and merging sensor data from multiple ... estimating function in Sections6and7 Trang 2We explain inSection 3how the joint use of the factor-ization property and various projections helps handling both known inputs and unknown excitations; inSection

Ngày tải lên: 22/06/2014, 23:20

... lifetime, and mobility modeling, and on the design of energy-efficient protocols Dr Santi has contributed more than twenty papers in the field of wireless ad hoc and sensor networking, and has been ... CLUSTERPOW and KNeighLev protocols 187 Trang 31Part IIntroduction Trang 33Ad Hoc and Sensor Networks Recent emergence of affordable, portable wireless communication and computation devices and concomitant ... wireless ad hoc and sensor networks, a topic that has been a subject of intensive research in recent years Indeed, this research field is far from being settled, and several new results and proposals

Ngày tải lên: 27/06/2014, 00:20

... nodes u and v have radio range equal to r1, with r1= d1+ ε < d2 and that nodesw and z have range r2, withr2> d2 In this situation,w and z cannot hear the RTS/CTS exchange between nodes u and ... properties is motivated by energy consumption and network capacity concerns (seeSections 3.1.1 and 3.1.2) The most-studied version of the CTR problem in ad hoc and sensor networks is thecharacterization ... parameter, and the asymptotic value of the CTR as l → ∞ is investigated In this model, l can be seen as the independent variable, and bothr and n are expressed as a function of l (and of the

Ngày tải lên: 14/08/2014, 14:20

... of LMST: every node broadcasts its ID and position at maximum power, andcollects the location information sent by its visible neighbors The main difference betweenLMST and FLSSk is in the topology ... links, andsymmetry can be enforced by either removing all the unidirectional links or by making thembidirectional Li and Hou prove that FLSSk(and its symmetric variants) preservesk-connectivity, and ... average-case performance ofLMST on random node deployments through simulation, and they have verified that LMSTproduces topologies with a smaller average logical node degree and average transmissionradius

Ngày tải lên: 14/08/2014, 14:20

... timet and t + ε with the LMST and KNeigh topology control protocols In the entry forpower levels,bc stands for broadcast power compute its neighbor set, nodeu sends two messages: one to broadcast ... generated by LMST), nodeu must send four messages: one to broadcast its ID and position and three messages to probe the links with nodeso, v, and z The power level settings of node u are w z q r s ... sends four messages to compute its neighbor set: one to broadcast its ID and position and three messages to probe the links with nodeso, w and z. The neighbors of u with KNeigh are NKN(u) = {q, v,

Ngày tải lên: 14/08/2014, 14:20

... both node u and the nodes in its vicinity. This observation discloses a flaw in some early neighbor-based TC protocols, such as MobileGrid (Liu and Li 2002) and LINT/LILT (Ramanathan and Rosales-Hain ... messages are used: beacon and help messages. The content of beacon and help messages is the same, that is, ID and current power level of the sender. However, the purpose of beacon and help messages is ... (see Figure 14.4). To solve this problem, Kawadia and Kumar release the assumption of using a common power level, and define a protocol for joint TC and routing that induces an implicit power-level-based

Ngày tải lên: 14/08/2014, 14:20

... (Random variable) A random variable X is a function defined on a sam- ple space. If the sample space on which X is defined is discrete, X is said to be a discrete random variable. Examples of random ... i ) ≥ 0 and  i f(x i ) = 1. Topology Control in Wireless Ad Hoc and Sensor Networks P. Santi  2005 John Wiley & Sons, Ltd [...]... Bettstetter C 2002 On the minimum node degree and connectivity ... Failure-resilient ad hoc and sensor networks in a shadow fading environment Proc IEEE Workshop on Dependability Issues in Ad Hoc Networks and Sensor Networks (DIWANS),

Ngày tải lên: 14/08/2014, 14:20

... standard CMOS technology The circuit and layout design work was done jointly by Prof Timo Rahkonen (Papers X and XIII), Dr Tarmo Ruotsalainen (Paper XI and XIV) and the author (Papers XII and ... decimetres, and the stand-off distance from several decimetres up to tens of metres The experimental results show that a sensor composed of standard components and having a measurement field of 10 mm and ... DEVICES AND SENSOR SYSTEMS FOR OPTICAL TRACKING AND DISPLACEMENT SENSING APPLICATIONS ANS SI M Ä KYN E N Department of Electrical Engineering OULU 2000 ANSSI MÄKYNEN POSITION-SENSITIVE DEVICES AND SENSOR

Ngày tải lên: 03/10/2014, 22:39

... OPTICAL COMMUNICATION AND SENSORSYSTEMS YANG JING NATIONAL UNIVERSITY OF SINGAPORE 2011 Trang 2MANAGEMENT OF FIBER PHYSICAL EFFECTS IN HIGH-SPEED OPTICAL COMMUNICATION AND SENSORSYSTEMS YANG JING ... phase-matching condition and to obtainlarge gain and wide bandwidth 6-channel 80-GHz optical pulse trains with high ex-tinction ratio are generated using one pulsed pump and three continuous wave ... measurement and optical filtering In the absence of filter, RF power is affected by both CD and PMD By filtering the optical Trang 9compo-nents in one of sidebands, the CD effect can be eliminated and

Ngày tải lên: 11/09/2015, 10:01

... permanent magnet DC motor The motor is assumed to be a black box The load and the motor parameters are assumed to be unknown No prior knowledge of the load dynamics is assumed The DC motor is identified ... Brushless DC motors, induction motors and synchronous motors have gained widespread use in electrical traction However, there is a persistent effort to make them behave like DC motors through ... permanent magnet DC motor The motor is assumed to be a black box The load and the motor parameters are assumed to be unknown No prior knowledge of the load dynamics is assumed The DC motor is identified

Ngày tải lên: 04/10/2015, 10:25

... window and cwnd Slow start Congestion avoidance Slow start threshold ssthresh = maximum of { min(cwnd,receiver’s advertised window)/2 and 2 segment size } Transport Layer in ad-hoc and sensor ... in ad-hoc and sensor Trang 29 Estimates rate accurately  Reduce traffic on the reverse path  Recover more than one lost segment at a time Trang 30Transport Layer in ad-hoc and sensor Trang ... (IPsec)  Cannot be used if TCP data and TCP acks traverse different paths (both do not go through the same base station ) Transport Layer in ad-hoc and sensor Trang 23Explicit Notification

Ngày tải lên: 24/05/2016, 22:34

... position sensors However, these sensors increase the cost and size of the motor, and a special mechanical arrangement is needed to mount the sensors These sensors, particularly Hall sensors, ... a stable spin speed and fast dynamic responses as well as high efficiency, the spindle motor is driven by sensorless BLDC mode 1.2 BLDC Motors and Sensorless Drives BLDC motors are one kind of ... spindle motor are the phase voltages offered by the block named “two-phase motor driver” And when the motor operates in BLDC mode, the motor speed and the phase back-EMF can be detected, and then...

Ngày tải lên: 28/09/2015, 13:38

... poles) can be formed by cascading stages Find k1 and k2 from Table 3-1, arbitrarily select R1 and C (try 10K and 0.01µF), and then calculate R and Rf from the equations in the figure The parameter, ... 3-1 have a passband ripple of about 6% (0.5 dB), a good compromise, and a common choice A similar design, the elliptic filter, allows ripple in both the passband and the stopband Although harder ... the Nyquist frequency and the Nyquist rate Unfortunately, their meaning is not standardized To understand this, consider an analog signal composed of frequencies between DC and kHz To properly...

Ngày tải lên: 13/09/2012, 09:49

... set down in documents called standards Several standardized metrology terminologies exist but they are not consistent It will be found that books on instrumentation and statements of instrument ... Figure 3.4 shows the block diagram representation of a humidity sensor The sensor is activated by an input physical parameter and provides an output signal to the next block that processes the ... alone and the combined static and dynamic regime can be found through use of an appropriate mathematical model of each block The mathematical description of system responses is easy to set up and...

Ngày tải lên: 23/12/2013, 01:16

... Transducers and Sensors Ahmad Safari, Victor F Janas, Amit Bandyopadhyay, and Andrei Kholkine 6.5 Laser Interferometer Displacement Sensors Bernhard Günther Zagar 6.6 Bore Gaging Displacement Sensors ... Linear and Angular 6.1 6.2 6.3 6.4 Resistive Displacement Sensors Keith Antonelli, James Ko, and Shyan Ku Inductive Displacement Sensors Halit Eren Capacitive Sensors—Displacement Halit Eren and ... accuracy and standards Section II covers spatial variables, such as displacement and position Section III includes time and frequency Section IV covers solid mechanical variables such as mass and...

Ngày tải lên: 23/12/2013, 01:16

... Balachandran et al [3] Balazinska and Castro [4] Chinchilla et al [5] Henderson et al [9] Hutchins and Zegura [10] Kotz and Essien [13] McNett and Voelker [16] Mishra et al [17] Schwab and Bunt ... variation in the handoff latency between devices, with a Lucent client and Cisco AP taking an average of 53.3 ms, and a Cisco client and Cisco AP taking 420.8 ms With the same device and AP configuration, ... slope, residential dormitories and houses, communal eating and social areas, and parts of the town in which the college is based, including some shopping areas, a hotel, and restaurants In terms of...

Ngày tải lên: 20/01/2014, 01:21

... Thyaga Nandagopal Communication Protocols and Internetworking Research Bell Laboratories, Lucent Technologies, New Jersey, USA MOBILE, WIRELESS, AND SENSOR NETWORKS MOBILE, WIRELESS, AND SENSOR ... Wireless Sensor Networks 197 Enrique J Duarte-Melo and Mingyan Liu Coverage and Connectivity Issues in Wireless Sensor Networks 221 Amitabha Ghosh and Sajal K Das 10 Storage Management in Wireless Sensor ... and broader scope The new topics added were wireless LAN measurements, security in mobile networks, security and storage management in sensor networks, and sensor- network-related middleware and...

Ngày tải lên: 20/01/2014, 01:21

... Pumps and fans Pumps and fans Any Pumps and fans Any High-inertia loads Yes* No No No No Yes No Yes Direct on-line Star-delta Part windings Resistors Motor Standard Standard windings Standard Standard ... protection systems 4.5 4.5 4.6 Motor losses and heating Causes of faults and their effects Motor losses and heating b Equivalent diagram of a motor An asynchronous squirrel cage motor can be represented ... 2-wire control AC motors starting and protection systems 4.3 Multifunction motor starter units b Forward and reverse operation The figures 31 and 32 illustrate the power base and the reversing...

Ngày tải lên: 15/02/2014, 08:38