Department of Computer Science and Information Systems
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Item Experimental Analysis and Optimal Control of PZT Based Cantilever Beam Using Fuzzy-PID Controllers(IEEE, 2022) Yenuganti, SujanIn this study experimental analysis and control of a PZT based cantilever is performed using Fuzzy-PID controllers. Two PZT patches were attached to the rigid end of the Cantilever beam out of which one was used as an actuator and another PZT was used as a sensor. The sensor input was provided to a computer using an NI DAQ card. The sensor signal was received by the computer through LABVIEW software where the control algorithms using PID and Fuzzy-PID controller were designed. At the rigid end of the cantilever beam, a magnet was attached and an electromagnet was used as a controller for controlling the vibrations. The vibration suppression was done at the first order mode frequency of the cantilever beam and both PID and fuzzy-PID controllers show good suppression of the vibrations. However, the results show that fuzzy-PID controllers have better characteristics than PID control.Item Performance Enhancement in Stainless Steel Pressure Sensor(Springer, 2020-07) Yenuganti, SujanA piezoelectric resonant pressure sensor fabricated with stainless steel with a modified design to improve its performance is proposed in this work. The sensor consists of a stainless steel diaphragm, inclined trusses, hinged vertical mounts, and a resonating doubly clamped beam. The deflection of the diaphragm with applied pressure is transferred to the resonating beam via a stress transmission mechanism comprising of inclined trusses and vertical mounts. The sensor is fabricated with SS 304 grade stainless steel using electrical discharge machining (EDM) and wire-cut EDM process. The sensor was tested for its characteristics for an input pressure of 0–25 bar. The experimental results demonstrate that the proposed sensor was found to have better linearity, higher sensitivity, and low hysteresis as compared to a similar pressure sensor existing in the literature. Sensor design is simple; fabrication involves well-known machining process, self-packed, and hence cost effective.Item Piezoelectric based Resonance Displacement sensor(IEEE, 2013) Yenuganti, SujanThe paper presents design and development of a resonance displacement sensor. The sensor is built with cantilever as a resonator with piezoelectric excitation and sensing in closed loop electronics. The sensor measures the unknown displacement with good linearity within the measurement range. The input displacement varies the length of the resonator by a fixed roller arrangement. The shift in resonance frequency for a change in displacement is detected by closed loop electronics.