Concept based notes Engineering Mechanics B.Tech. First Semester Mohit Kumar Dotoliya B.Tech. Asst. Prof. Biyani International Institute of Engg. & Tech.‚ Jaipur For More Detail: - http://www.gurukpo.com Published by : Think Tanks Biyani Group of Colleges Concept & Copyright : ©Biyani Shikshan Samiti Sector‐3‚ Vidhyadhar Nagar‚ Jaipur‐302 023 (Rajasthan) Ph : 0141‐2338371‚ 2338591‐95 • Fax : 0141‐2338007 E‐mail : acad@biyanicolleges.org Website :www
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1.1 Introduction In recent years‚ the sliding mode control system has been widely used for robust control of nonlinear systems (the author Slotine and Li‚ 1991). The sliding mode control‚ based on the theory of variable structure systems‚ has attracted a lot of investigate on control systems for the last two decades. A comprehensive survey on variable structure control was given in Hung and other. (1993). The salient advantage of sliding mode control is robustness against structured and unstructured
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References: * X. Wang‚ Y. Chen‚ H. Xi‚ H.Li and D. Dimitrov‚ Spintronic memristor through spin torque induced magnetization motion’ IEEE Device Letters‚ vol. 30‚n o. 3‚ pp. 294-297‚2009. ‡ * L. O. Chua‚ “Memristor”‚ The missing circuit element‚ IEEE Tran.Circuit Theory‚ vol. CT-18‚ no. 5‚ pp. 507 - 519‚ Sep. 1971. * Neil Savage ‚ Spintronic Memristors
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Chapter (11) Synchronous Motors Introduction It may be recalled that a d.c. generator can be run as a d.c. motor. In like manner‚ an alternator may operate as a motor by connecting its armature winding to a 3-phase supply. It is then called a synchronous motor. As the name implies‚ a synchronous motor runs at synchronous speed (Ns = 120f/P) i.e.‚ in synchronism with the revolving field produced by the 3-phase supply. The speed of rotation is‚ therefore‚ tied to the frequency of the source. Since
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3 Use of CRO‚ Function generator and power supply. 12 4 Realization of MUX and DEMUX. 17 5 Active Filter Design using OPAMPS. 20 6 To plot the speed torque characteristics of a dc motor. 22 7 25 To start and reverse the direction of an induction motor. To plot the speed torque characteristics of an induction motor. 8 Interfacing of microcontroller with dc motor and LED. 27 9 Driving an LED/Relay/motor using 8051 microcontroller output ports
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INTRODUCTION During the nineteenth century‚ when power supply was dc‚ dc motors were used extensively to draw power direct from the dc source. The motor speed could be varied by adjusting field current by a rheostat. That was an open loop control. Most of the drives were constant speed and the characteristics could not be matched with a job requirement. A vast development in the dc drives system took place when the ward Leonard Control System was introduced in the 1980s. The system
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mgh describe kinetic energy as energy due to motion and derive kinetic energy as mv2/2 state conservation of energy laws and solve problems where energy is conserved define power as rate of energy transfer define couple‚ torque and calculate work done by variable force or torque solve problems where energy is lost due to friction Table of contents: 3 3.1 3.2 3.3 3.3.1 3.3.2 3.3.3 3.3.4 3.3.5 3.4 3.5 3.6 3.6.1 3.6.2 3.6.3 Work‚ Power and Energy..................................................
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not on all parts of the body. Forces on a balanced dancer like gravity (pulls down‚ acts upon center of gravity) and the support from floor (pushes up‚ acts upon feet) equal zero. Both forces act through the center of gravity‚ and so‚ the dancer’s torque also equals
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conditions are satisfied in static systems all forces and torques sum to zero. In problems where the first and second conditions of equilibrium are satisfied‚ the best strategy is to create FBD’s for both the first and second conditions‚ derive equations based on these FBD’s and then see what useful information may be gleaned from these equations. When applying the second condition we are free to choose any axis about which to compute torques. It is best to choose an axis that eliminates one or more
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the front wheels. In the present day automobiles‚ power steering assist has become a standard feature. A hydraulic power steering uses hydraulic pressure supplied by an engine-driven pump. Power steering amplifies and supplements the driver-applied torque at the steering wheel so that steering effort is reduced. The recent introduction of electric power steering in production vehicles eliminates the need for the hydraulic pump. Electric power steering is more efficient than conventional power steering
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