He moved to the Centre for Nano Science and Engineering (CeNSE) as a Professor and the Founding Chairperson.
DEFINITION OF GSWITCH FULL
In 1996, he joined the Department of Mechanical Engineering, Indian Institute of Science, Bengaluru, as an Assistant Professor, where he served full time from 1996 to 2010. He taught at the Sibley School of Mechanical and Aerospace Engineering, Cornell University, from 1994 to 1996. degree from Cornell University, Ithaca, NY, USA, in 1993. degree from The University of Arizona, Tucson, AZ, USA, in 1987, and the Ph.D. degree (Hons.) from IIT Kharagpur, Kharagpur, India, in 1985, the M.S. Rudra Pratap (Senior Member, IEEE) received the B.Tech. Navigate Left Previous article in issue.Hence, we believe that this novel design framework can be used to fabricate a latch accelerometer for any arbitrary input shock profile. The analytical response and the experimental response show good agreement. A shock input of 60 g magnitude and 1.2 ms pulse width is given to the fabricated acceleration switch and the experimental response is recorded using high-speed video images. We verify our model by fabricating a latch accelerometer using the parameters obtained from this model for a 60 g threshold acceleration. Subsequently, we build a g-switch model in SIMULINK that uses the variation in design parameters for a given acceleration profile to find an optimal set of values of design parameters for a specified threshold acceleration. The latching constraints ensure that latching does not occur for any magnitude of acceleration less than the specified threshold value. We then use these solutions, along with latching constraints on them, to study how the lumped design parameters – mass, suspension spring stiffness, and latching spring stiffness – vary with increasing threshold acceleration. We first find analytical solutions for displacement and velocity of the proof mass by linearizing the friction term using a single degree of freedom model and representing the acceleration profile by a Fourier series. It is this physical contact between two surfaces under dynamic conditions that introduces nonlinearity in the system response and makes the task of design optimization difficult. These switches need to engage a physical latch upon sensing a specified threshold acceleration. We present an experimentally verified novel design framework for MEMS g-switch acceleration switches.
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