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Design Optimization of Cam &follower Mechanism of an Internal Combustion Engine for Improving the Engine Efficiency

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Modern Mechanical Engineering 2012年第3期2卷 114-119页

作者： Mahesh R. Mali Prabhakar D. Maskar Shravan H. Gawande Jay S. Bagi Department of Mechanical Engineering M. E. Society’s College of Engineering Pune India Department of Mechanical Engineering Rajarambapu Institute of Technology Islampur India KIT College of Engineering Kolhapur India Research and Development MAN Trucks India Pvt. Ltd. Pune India

The current cam and follower mechanism in four stroke internal combustion engine employs a flat follower. In this work an attempt is made to change the flat face of follower to a curved face follower, so that the required point contact can be achieved. As line contact between existing cam and follower mechanism results in high frictional losses which results in low mechanical efficiency. It is observed that the frequency of vibration in the existing and modified cam and follower mechanism remains almost same. The finite element approach is used to perform the analysis.

关键词： follower & Cam Point Contact Vibration Analysis Finite Element Approach [FEA]

Realization of a New Current Mode Second-Order Biquad Using Two Current follower Transconductance Amplifiers (CFTAs)

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Circuits and Systems 2015年第5期6卷 113-120页

作者： Nisha Walde Syed Naseem Ahmad Department of Electronics & Comm. Engineering Jamia Millia Islamia New Delhi India

A new circuit for realization of universal current-mode filter using current follower Transconductance Amplifiers (CFTAs) is presented. The proposed circuit realizes current-mode low pass, high pass and band pass filter functions simultaneously with a single current source at the input. The band reject and all pass filters can also be obtained from the proposed circuit without any extra hardware. The proposed circuit employs three passive grounded elements and two CFTAs. Linear electronic control of natural frequency ω0 is available in the proposed circuit. The quality factor can be independently adjusted through grounded resistor. The proposed circuit employs two grounded capacitors and a grounded resistor along with two CFTAs. The grounded resistor can be replaced by an OTA based circuit for linear electronic control of quality factor Q0. The circuit exhibits low active and passive sensitivities for ω0 and Q0. Simulation results are obtained using PSPICE software which is in conformity with the theoretical findings.

关键词： Current follower Transconductance Amplifier (CFTA) Current-Mode Circuit Biquad Filter Voltage-Mode Circuit Current Conveyor (CC)

Wall follower Autonomous Robot Development Applying Fuzzy Incremental Controller

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Intelligent Control and Automation 2013年第1期4卷 18-25页

作者： Dirman Hanafi Yousef Moh Abueejela Mohamad Fauzi Zakaria Department of Mechatronic and Robotic Engineering Faculty of Electrical and Electronic Engineering Universiti Tun Hussein Onn Malaysia Parit Raja Malaysia

This paper presents the design of an autonomous robot as a basic development of an intelligent wheeled mobile robot for air duct or corridor cleaning. The robot navigation is based on wall following algorithm. The robot is controlled using fuzzy incremental controller (FIC) and embedded in PIC18F4550 microcontroller. FIC guides the robot to move along a wall in a desired direction by maintaining a constant distance to the wall. Two ultrasonic sensors are installed in the left side of the robot to sense the wall distance. The signals from these sensors are fed to FIC that then used to determine the speed control of two DC motors. The robot movement is obtained through differentiating the speed of these two motors. The experimental results show that FIC is successfully controlling the robot to follow the wall as a guidance line and has good performance compare with PID controller.

关键词： Autonomous Robot Wall follower Fuzzy Incremental Controller Embedded System

Flipped Voltage follower Ddesign Technique for Maximised Linear Operation

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Engineering（科研） 2010年第8期2卷 665-667页

作者： Ching-Mei Chen Khaled Hayatleh Bryan Hart John Lidgey 不详

The results of comparative DC simulation tests confirm that a proposed modification to the feedback circuit of a Flipped Voltage follower (FVF), to produce a type of ‘Folded’ Flipped Voltage follower (FFVF), is capa... 详细信息

关键词： Analog Voltage follower

An Overview and Perspectives On Bidirectional Intelligence: Lmser Duality, Double IA Harmony,and Causal Computation

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IEEE/CAA Journal of Automatica Sinica 2019年第4期6卷 865-893页

作者： Lei Xu IEEE the Center for Cognitive Madmnes and Computational Health(CMaCH) School of Electronic Information and Electrical EngineeringShanghai Jiao Tong University Neural Computation Research Centre in Brain and Intelligence Science-Technology Institute Shanghai ZhangJiang National Lab

Advances on bidirectional intelligence are overviewed along three threads,with extensions and new *** first thread is about bidirectional learning architecture,exploring five dualities that enable Lmser six cognitive functions and provide new perspectives on which a lot of extensions and particularlly flexible Lmser are ***,either or two of these dualities actually takes an important role in recent models such as U-net,ResNet,and Dense *** second thread is about bidirectional learning principles unified by best yIng-yAng(IA)harmony in BYY *** getting insights on deep bidirectional learning from a bird-viewing on existing typical learning principles from one or both of the inward and outward directions,maximum likelihood,variational principle,and several other learning principles are summarised as exemplars of the BYY learning,with new perspectives on advanced *** third thread further proceeds to deep bidirectional intelligence,driven by long term dynamics(LTD)for parameter learning and short term dynamics(STD)for image thinking and rational thinking in *** thinking deals with information flow of continuously valued arrays and especially image sequence,as if thinking was displayed in the real world,exemplified by the flow from inward encoding/cognition to outward reconstruction/transformation performed in Lmser learning and BYY *** contrast,rational thinking handles symbolic strings or discretely valued vectors,performing uncertainty reasoning and problem *** particular,a general thesis is proposed for bidirectional intelligence,featured by BYY intelligence potential theory(BYY-IPT)and nine essential dualities in architecture,fundamentals,and implementation,***,problems of combinatorial solving and uncertainty reasoning are investigated from this BYY IPT ***,variants and extensions are suggested for AlphaGoZero like searching tasks,such as traveling salesman probl

关键词： Autoencoder LMSER duality outward attention associative recall concept formation imagining pattern transformation STD vs LTD RPCL skip connection feedback variational least redundancy Bayesian Ying Yang IA system best harmony best matching image thinking rational thinking intelligence potential theory Alpha-TSP Alpha-AGM graph matching ME Player BYY follower constraint satisfaction causal potential theory

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