NDLI: Experimental study of hybrid cam mechanism

Content Provider	IEEE Xplore Digital Library
Author	Panga, A. Seth, B.
Copyright Year	2004
Description	Author affiliation: Dept. of Mech. Eng., Indian Inst. of Technol., Mumbai, India (Panga, A.; Seth, B.)
Abstract	In this paper we have presented a programmable hybrid mechanism (PHM) capable of producing various types of translatory profiles while carrying loads of up to 5 kilograms. The output is driven by a five bar mechanism, which, in turn, is driven by a servo input and a reference input. By choosing the correct trajectories of the servo input and the starting position, the torque sharing characteristics can be improved, such that the lowest rating servo motor will suffice. Thus providing flexibility at a reduced cost. Also the reference input which can be a constant speed motion can be derived from some other source, thus not needing a dedicated motor. Such a device can replace cams in applications where the functional relationship between the input and the output motions changes from time to time, such as packaging equipment and control of valve timings of IC engines. The PHM setup has been designed and fabricated. Simulation of the mechanism is carried out using ADAMS, to determine the size of servo motor. An approach to determine optimal control input to the mechanism for a given output profile is discussed. The experimental setup allows users to generate various cam profiles and study the deviations. Various profiles were generated within reasonable accuracy. A typical cam profile has been considered and optimization of control trajectory results in RMS torque reduction of 57%.
Starting Page	607
Ending Page	612
File Size	1049548
Page Count	6
File Format	PDF
ISBN	0780386450
DOI	10.1109/RAMECH.2004.1437988
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-12-01
Publisher Place	Singapore
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Servomechanisms Servomotors Prognostics and health management Torque Costs Integrated circuit packaging Packaging machines Motion control Valves Timing
Content Type	Text
Resource Type	Article

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