Abstract

In paper the fundamental question about optimal interaction between the controlling stimuli generated by the active (powered) and the passive (unpowered) drives of the robotic systems have been studied. A mathematical statement of the problem has been proposed that is suitable to study this question for the semi-passively actuated n-degree-of-freedom robotic systems. The problem is formulated as an optimal control problem for n-degree-of-freedom mechanical system models a semi-passively actuated robot. We take into account the inter ....etc

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A Geometric Approach to Improving Active Packet
Loss Measurement
Measurement and estimation of packet loss characteristics
are challenging due to the relatively rare occurrence
and typically short duration of packet loss episodes.packet loss on end-toend
paths are measured by active
probe tools. But accuracy of these
tools or their impact on the network has not been probed.

DEFINITIONS OF LOSS CHARACTERISTICS
packet loss
in the Internet is contributed by many factors. The environment that we consider is modeled as
a ....etc

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MAGNETORHEOLOGICAL FLUID DAMPER
1.INTRODUCTION
Vibration isolators or dampers are commonly used to mitigate vibrations in structures or machines. The isolators are typically passive and they are designed to reduce the vibration of the most undesired frequency. However, in many applications, the excitation frequency varies across a large range. In a semi-active device, the stiffness or damping can be adjusted during operation. Changing the stiffness of the support device can be exploited by moving the eigenfrequency of t ....etc

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Evaluation of Active Damping for Reduction of Noise, Vibration and
Motion of Ground Vehicles
The off-road vehicles are subject to large vibrations which can have severe affects on drivers, crew and load.Most ground vehicles are equipped with passive spring and damping devices which have reached a high
level of sophistication.active damping, has reached production stage for luxury vehicles, trucks and trains.

Studies by Karnopp for automotive applications suggest that the efficiency of semi-active dampers is only marginally low ....etc

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P V Ramaiah J. and G Krishnaiah2
I Department of Mechanical Engineering, Srikalahasteeswara Institute of Technology, Andhra Pradesh, India 2Department of Mechanical Engineering, SV University College of Engineering, Andhra Pradesh, India
The manuscript was received on 15 June 2006 and was accepted after revision for publication on 30 May 2007. DOl: 1O.1243/09544062JMES411


abstract

The paper deals with modelling and design of a friction damper. This has been done in four phases. In the first pha ....etc

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Active pixel sensor

An active-pixel sensor (APS), also commonly written active pixel sensor, is an image sensor consisting of an integrated circuit containing an array of pixel sensors, each pixel containing a photodetector and an active amplifier. There are many types of active pixel sensors including the CMOS APS used most commonly in cell phone cameras, web cameras and in some DSLRs. Such an image sensor is produced by a CMOS process (and is hence also known as a CMOS sensor), and has emerged as an alternative to charge-coupled device (CC ....etc

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GEOMETRIC APPROACH TO IMPROVING ACTIVE PACKET LOSS MEASUREMENT

Abstract: Measurement and estimation of packet loss characteristics are challenging due to the relatively rare occurrence and typically short duration of packet loss episodes. While active probe tools are commonly used to measure packet loss on end-to-end paths, there has been little analysis of the accuracy of these tools or their impact on the network. The objective of our study is to understand how to measure packet loss episodes accurately with end-to-end probes. We begin by ....etc

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Hi,
visit this thread for more details on this topic:
http://seminarsprojects.net/Thread-geometric-approach-to-improving-active-packet-loss-measurement ....etc

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ABSTRACT

Adaptive active phased array radars are seen as the vehicle to address the current requirements for true multifunction radars systems. Their ability to adapt to the enviournment and schedule their tasks in real time allows them to operate with performance levels well above those that can be achieved from the conventional radars. Their ability to make effective use of all the available RF power and to minimize RF losses also makes them a good candidate for future very long range radars.

1. ....etc

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WORKERS ACTIVITY MONITORING AND ANALYZING WITH MINIATURE WEARABLE SUPER ACTIVE RF SENSOR USING LOCAL RF NET WORK AND CENTRAL MONITOR STATION IN REAL TIME.

With advancement in technology and science electronics have been getting smaller and smaller, which enables researchers and scientist to weave the electronics and interconnections into human body. This new technology enables to establish a new concept called electronic workers activity monitoring which allows cost-effective and efficient solutions for monitoring efficiency of workers in th ....etc

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