Abstract

In this study, we propose some simple but effective throughput-approximation methods for finite-buffered closed-loop production systems with unreliable machines and exponentially distributed processing times. The proposed approximation methods are based on decomposition and aggregation principles. According to the method representing the decomposed systems, three different approximation methods are developed, along with a simple upper bounding method for throughputs. Extensive computational experiments are perform ....etc

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how the flex sensor work ?

what is the advantages of using servo motor instead of stepper motor? ....etc

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PRESENTED BY:
Jon Mah


Flex Circuit Design for CCD Application
System Description
 Actively cooled CCD using Thermoelectric Cooler
 Operating Temperature of -100°C ± 0.1°C
 Serial Clock Speed of 1MHz
 CCD size is 4096 X 4096pixels
4 flex circuits
 Hermetic, evacuated housing (not pictured)
 Concentrate on Base assembly (neglecting external preamps, etc.)
 Aside: CCD Background
 Starts with exposing the CCD to light.
 Charge builds in potential wells via the photoe ....etc

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Definition

corDECT is an advanced, field proven, Wireless Access System developed by Midas Communication Technologies and the Indian Institute of Technology, Madras, in association with Analog Devices Inc., USA. corDECT provides a complete wireless access solution for new and expanding telecommunication networks with seamless integration of both voice and Internet services. It is the only cost-effective Wireless Local Loop (WLL) system in the world today that provides simultaneous toll-quality voice and 35 or 70 kbps Internet access to wirel ....etc

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An industrial plant has hundreds or even thousands of control loops. The performance of control loops is important to ensure high product quality and low cost of the product in such plants. In general, oscillatory variables are one of the main causes for poor performance of control loops. Therefore, detection and diagnosis of the causes of oscillations in control loops is very vital for maintaining the product within the desired quality limits. Identification of such source signatures is a very important task in assessing closed loop control pe ....etc

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Advantages and did advantage of felx sensor ....etc

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Can anyone give flex advantages and disadvantages ppt ....etc

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Motion Controlled Robotic Arm Using Flex Sensors



1. INTRODUCTION

Our project deals with controlling a bionic/robotic arm with the help of motion sensing technology by Flex Sensors. The system is basically a master-slave system wherein the master motion sensing glove sits on hosts arm sensing motions of the finger and then using this data to control the servos which control the finger movement of the slave bionic/robotic arm.

How They Work ....etc

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Introduction

Couplers, also known as isolators because they electrically isolate as well as transmit data, are widely used in industrial and factory networks, instruments, and telecommunications. Every one knows the problems with optocouplers. They take up a lot of space, are slow, optocouplers age and their temperature range is quite limited. For years, optical couplers were the only option. Over the years, most of the components used to build instrumentation circuits have become ever smaller. Optocoupler technology, however, hasn't kept ....etc

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Open loop control vs. closed loop (feedback) control



The next two figures present the structures of open loop and feedback control systems.
Figure 1 shows an open loop control system whose function is to cause the output y(t) to follow the
reference r(t).
Feedback control system design for zero steady state error
In general, to follow a reference R(s) with zero steady-state error, the path between the
reference and the system output should contain a term like R(s). For instance, to follow a ramp
(velocity ....etc

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