WED1-2 39th International Symposium on Robotics 2008 Seoul‚ Korea / October 15~17‚ 2008 Proceedings of the 39nd ISR(International Symposium on Robotics)‚ 15~17 October 2008 A Crawling Based Locomotive Mechanism Using a Tiny Ultrasonic Linear Actuator (TULA) Hyunjun Park‚ Byungkyu Kim School of Aerospace and Mechanical Engineering Korea Aerospace University 100‚ Hanggongdae gil‚ Gyeonggido‚ Korea E-mail : bkim@kau.ac.kr Jong-Oh Park School of Mechanical System Engineering Chonnam National
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[pic] Dated: 24th Feb 13 Bharat Light & Power N.Venkatesha General Manager-WRA M +91 9840850740 n.venkatesha@blp.co.in No. 342‚ 1st floor‚ SBI Building (Behind SBI) ‚Konena Agrahara‚ HAL Old Airport Exit Road‚ Bangalore – 560017‚ Karnataka‚ India |MAST – 60 m | | |Galvanized Lattice Wind Mast 60 m + 0.5 mts with all required accessories |320000
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SMART MATERIALS Smart or intelligent materials form a group of new and state-of-the art materials now being developed that will have a significant influence on many of our technologies. The adjective “smart” implies that these materials are able to sense changes in their environments and then respond to these changes in predetermined manners—traits that are also found in living organisms. The field of smart materials attempts to combine the Sensor: that detects an input signal Actuator:
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Objective: One of the main learning experiences of this lab is to learn the importance of calibrating a sensor. In most cases‚ a sensor will not have an output that is exactly what you need. An example of this is a strain gage. A stain gage gives back a voltage‚ but with that given voltage a distance can be found. Introduction: In this experiment‚ the QNET-MECHKIT was used. This board has multiple compact sensors that can be used for experiments. For this lab we will be using the strain
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This block contains the LM35 sensor. It receives 9V supply from a battery and delivers an output voltage signal that ranges between 0 and 500 mV depending on temperature‚ 0V at 0ºC and 500mV at 50ºC increasing linearly in between. It may deliver more than 500 mV when the temperature is higher than 50ºC ‚ but it is useless since the conditioning system has a ceiling temperature of 50ºC beyond which sticks displaying as if it was 50ºC. It has a RC damper of 1uA capacitance and 100Ω resistor connected
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using the same technology they could create images of the inside of the human body; Operators utilize transducers to send sound waves through the human body which in turn project images onto a screen in a process commonly known as ultrasounds. Many people associate ultrasounds to only be used to see a fetus in the womb but there are actually a variety of specializations and purposes ultrasounds are used for including to examine musculoskeletal systems‚ the abdomen‚ internal organs‚ vascular systems
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RESEARCH: SENSORS ULTRASONIC RANGE FINDER An ultrasonic range finder sensor enables a robot to detect obstacles in its path by utilizing the propagation of high-frequency sound waves. The sensor emits a 40 kHz sound wave‚ which bounces off a reflective surface and returns to the sensor. Then‚ using the amount of time it takes for the wave to return to the sensor‚ the distance to the object can be computed. Unlike the bumper switch and limit switch that alert you when they have been hit‚ the ultrasonic
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and controlling industrial processes. Technological advances have enabled the development of sensors with microscopic precision. They use MEMS technology and are called Micro sensors. 3 Sensor Types The sensors are a of type converters (transducers). They convert one physical quantity into another. Therefore‚ they can be classified according to the type of energy that is transferred. - Thermal Temperature sensors: thermometer‚ thermostat‚ bimetal thermometer Thermal sensors: calorimeter
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image. However‚ sonography uses sound waves to generate an image. Through the use of special equipment and computers‚ diagnostic medical sonographers direct high frequency sound waves into parts of a patient’s body through a wand called a transducer. The transducer sends and receives reflected echoes of sound‚ much like a dolphin uses “echo-location” (Merton). The initial responsibility of a sonographer is to explain the procedure to the patient and obtain any additional medical history relevant
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four 7-segment displays‚ five ure distance without contact. transistors and some discreet comOne way is to use ultrasonic ponents. The ultrasonic transmitterwaves at 40 kHz for distance measurereceiver pair is shown in Fig. 1. ment. Ultrasonic transducers measure Ultrasonic generators use piezothe amount of time taken for a pulse of electric materials such as zinc or lead sound to travel to a particular surface zirconium tartrates or quartz crystal. and return as the reflected echo. The material
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