Design and implementation of high 'G' control law for an unmanned aircraft C. Ruba, P.S. Krishnan, J. Shanmugam, S. Lakshmi AIAA IEEE Digital Avionics Systems Conference Proceedings, 2005 Vertical gyroscope is used to measure the pitch and roll attitude of the aircraft with respect to local vertical. Since it provides the state feedback for the basic stabilization loop, the error in the vertical gyro may destabilize the flight control system. The erection mechanism of a vertical gyro is based on mercury level bubble/electrolytic level sensors. The spin reference axis is driven to vertical by erection servo loop. But, during forward acceleration and horizontal acceleration, spin reference axis is driven to false vertical. Such vertical gyroscopes are used for controlling the roll, which helps to make the turns tighter. But it leads to wrong pitch indication, which affects the altitude holding capability of the aircraft. During high 'g' maneuvers (2g and beyond) even small tilts can make the turn to be more oscillatory ie., normal acceleration to be oscillating a lot. Normal acceleration, also known as load factor, is a nonlinear function of roll angle. To take care of these higher oscillations, control law has been designed.
RECENT SCHOLAR PUBLICATIONS
Damage Detection in T-Beam Bridges Using Transmissibility of Vibration Signals S Lakshmi, M Gayathri Devi Recent Advances in Structural Engineering and Construction Management … , 2022 2022
Design of a self-lifting pedestrian bridge for flood-prone locations BK Mathew, S Lakshmi, G Hari Recent Advances in Structural Engineering and Construction Management … , 2022 2022 Citations: 2
Numerical analysis of transmission line tower with connection beam on pile foundation S Lakshmi, PM Philip Recent Advances in Structural Engineering and Construction Management … , 2022 2022 Citations: 3
EFFECT OF REST PERIOD AND TEMPERATURE ON THE ESTIMATION OF FATIGUE LIFE OF BITUMINOUS MIXTURE. P Ayyar, S Lakshmi, A Padmarekha Baltic Journal of Road & Bridge Engineering (RTU Publishing House) 17 (2) , 2022 2022
Study on Red Signal Violation and Development of prototype for Automated Enforcement System S Ranjith, A Ravathy, M Porchelvan, R Ponmuthuram, V Kumar International Journal for Research in Applied Science and Engg Tech [IJRASET … , 2022 2022
Neighbourhood walkability and its impact on elderly well being P Dharmambigai, S Lakshmi Journal of international research ,Journal of Engg and Tech (IJERT) 8 (10) , 2021 2021
A study on the pedestrian crossing behaviour and the impact of distractions at signalised intersection in Madurai B Prasanna, P Dharmambigai, S Lakshmi Journal of Road Transport 5 (22), 20-33 , 2021 2021
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DESIGN AND ANALYSIS OF AlGaN/GaN HIGH ELECTRON MOBILITY TRANSISTOR (HEMT) BASED BIO-SENSOR SB LAKSHMI 2020
AlGaN/GaN HEMT for highly sensitive detection of Bio-molecules using transconductance method PP Kumar Reddy, SB Lakshmi, L Arivazhgan, JS Raj Kumar, D Nirmal IOP conference series: materials science and engineering 872 (1), 012048 , 2020 2020 Citations: 8
Modeling of self-heating for AlGaN/GaN HEMT with thermal conductivity degradation effect L Arivazhagan, D Nirmal, J Ajayan, D Godfrey, JS Rakkumar, SB Lakshmi AIP Conference Proceedings 2201 (1), 020010 , 2019 2019 Citations: 7
Influence of rest period on fatigue response of bituminous mixture at low temperature P Ayyar, S Lakshmi, A Padmaarekha, J Murali Krishna International Journal of Pavement Research and Technology 12, 674-681 , 2019 2019 Citations: 10
Influence of temperature and rest period on various post processing methods for estimation of fatigue life of bituminous mixture P Ayyar, S Lakshmi, A Padmarekha 2019
Experimental Investigation on bituminous mixes with MORTH gradation and super pave gradation for Indian condition J Samuel Simron Raj Kumar, MM Vijayalakshmi, L S International Journal for Civil Engineering and Technology 9 (12), 461-471 , 2018 2018
Wet Blue Fiber and Lime from Leather Industry solid Waste as Stabilizing Additive and Filler in Design of Stone Matrix Asphalt CM C. Kamaraj, S. Lakshmi, C. Rose Asian Journal of Research in Social Science and Humanities 7 (11), 240 to 257 , 2017 2017 Citations: 22
Prevalence of surgical site infections and antimicrobial sensitivity pattern in patients attending a tertiary care hospital in south India: A prospective study G Shanmugam, S Rangam, KK Kayalvili, L Sundaram Journal of Patient Safety and Infection Control 5 (1), 12-17 , 2017 2017 Citations: 8
Methods to determine pedestrian level of service for side walks in Indian context S Marisamynathan, S Lakshmi The International Journal of Transportation Research , 2016 2016 Citations: 60
Characteristics of intercity bus passengers- A case study B Singh, S Lakshmi Journal of Road Transport 3, 28-40 , 2016 2016
Evaluation of feed bus connectivity for selected corridors in Chennai M Mohan, S Lakshmi Journal of Road Transport 3 (8), 5-17 , 2016 2016
Experimental study on micro surfacing using chrome shaving impregnated with modified bitumen emulsion C Kamaraj, S Lakshmi, C Rose, U Mani, E Paul, AB Mandal, ... J. Sci. Ind. Res 75 (6), 378-382 , 2016 2016 Citations: 12
MOST CITED SCHOLAR PUBLICATIONS
Methods to determine pedestrian level of service for side walks in Indian context S Marisamynathan, S Lakshmi The International Journal of Transportation Research , 2016 2016 Citations: 60
Wet Blue Fiber and Lime from Leather Industry solid Waste as Stabilizing Additive and Filler in Design of Stone Matrix Asphalt CM C. Kamaraj, S. Lakshmi, C. Rose Asian Journal of Research in Social Science and Humanities 7 (11), 240 to 257 , 2017 2017 Citations: 22
Performance analysis of signalized intersection at metropolitan area S Marisamynathan, S Lakshmi Journal of Advanced Research in Applied Sciences and Engineering Technology … , 2016 2016 Citations: 15
Experimental study on micro surfacing using chrome shaving impregnated with modified bitumen emulsion C Kamaraj, S Lakshmi, C Rose, U Mani, E Paul, AB Mandal, ... J. Sci. Ind. Res 75 (6), 378-382 , 2016 2016 Citations: 12
Influence of rest period on fatigue response of bituminous mixture at low temperature P Ayyar, S Lakshmi, A Padmaarekha, J Murali Krishna International Journal of Pavement Research and Technology 12, 674-681 , 2019 2019 Citations: 10
AlGaN/GaN HEMT for highly sensitive detection of Bio-molecules using transconductance method PP Kumar Reddy, SB Lakshmi, L Arivazhgan, JS Raj Kumar, D Nirmal IOP conference series: materials science and engineering 872 (1), 012048 , 2020 2020 Citations: 8
Prevalence of surgical site infections and antimicrobial sensitivity pattern in patients attending a tertiary care hospital in south India: A prospective study G Shanmugam, S Rangam, KK Kayalvili, L Sundaram Journal of Patient Safety and Infection Control 5 (1), 12-17 , 2017 2017 Citations: 8
Study on effect of coir fiber in the bituminous concrete mix P Bakiya, C Kamaraj, S Lakshmi International Journal of Science Technology and Engineering 2 (12) , 2016 2016 Citations: 8
Modeling of self-heating for AlGaN/GaN HEMT with thermal conductivity degradation effect L Arivazhagan, D Nirmal, J Ajayan, D Godfrey, JS Rakkumar, SB Lakshmi AIP Conference Proceedings 2201 (1), 020010 , 2019 2019 Citations: 7
Variable thermal resistance model of GaN-on-SiC with substrate scalability L Arivazhagan, D Nirmal, S Chander, J Ajayan, D Godfrey, JS Rajkumar, ... Journal of Computational Electronics 19 (4), 1546-1554 , 2020 2020 Citations: 5
Chrome-tanned leather buffing dust as a bitumen modifier for the design of dense graded bituminous concrete CR Karthiga, C Kamaraj, S Lakshmi, C Rose International Journal of Applied Engineering and Research 10 (62), 326-331 , 2015 2015 Citations: 5
A study on performance of sugar cane fibers in stone matrix asphalt P Vilvakumar, N Senthil, S Lakshmi, C Kamaraj, S Gangopal Journal of Indian Highways 41 (6) , 2013 2013 Citations: 5
Numerical analysis of transmission line tower with connection beam on pile foundation S Lakshmi, PM Philip Recent Advances in Structural Engineering and Construction Management … , 2022 2022 Citations: 3
Design of a self-lifting pedestrian bridge for flood-prone locations BK Mathew, S Lakshmi, G Hari Recent Advances in Structural Engineering and Construction Management … , 2022 2022 Citations: 2
Safety of women passengers in share autos: A case study of Chennai R Manaikandan, S Lakshmi, P Bakiya International Journal for Innovative Research in Science and Technology 3 (1 … , 2016 2016 Citations: 2
Effect of flaky and elongated aggregates with modified compaction techniques using super pave gradation J Samuel Simron Raj Kumar, MM Vijayalakshmi, S Lakshmi, ... Advances in Natural and Applied science 10 (14), 5-11 , 2016 2016 Citations: 1
Damage Detection in T-Beam Bridges Using Transmissibility of Vibration Signals S Lakshmi, M Gayathri Devi Recent Advances in Structural Engineering and Construction Management … , 2022 2022
EFFECT OF REST PERIOD AND TEMPERATURE ON THE ESTIMATION OF FATIGUE LIFE OF BITUMINOUS MIXTURE. P Ayyar, S Lakshmi, A Padmarekha Baltic Journal of Road & Bridge Engineering (RTU Publishing House) 17 (2) , 2022 2022
Study on Red Signal Violation and Development of prototype for Automated Enforcement System S Ranjith, A Ravathy, M Porchelvan, R Ponmuthuram, V Kumar International Journal for Research in Applied Science and Engg Tech [IJRASET … , 2022 2022
Neighbourhood walkability and its impact on elderly well being P Dharmambigai, S Lakshmi Journal of international research ,Journal of Engg and Tech (IJERT) 8 (10) , 2021 2021
