Conference Papers

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Author: search.filters.author.Balakrishnan, B.

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    Active Decoupling Control for a Planetary Coaxial Helicopter Using Force Feedback
    (IEEE Computer Society help@computer.org, 2018) Balakrishnan, B.; Shamrao; Aditya, R.; Narendra Nath, S.; Narayana, S.; Prasad, R.V.
    Drones developed for interplanetary space missions require full autonomy of operations including safe landing and hovering due to the delay in communication. For operation in low atmospheric densities, coaxial helicopters are best suited and they are capable of handling manoeuvres due to their small footprints and ease of operation. However, the dynamics of the helicopter is coupled in lateral axes which need to be compensated for precise control. The present solutions include vision-based tracking in order to decouple the dynamics, which needs additional hardware. In this paper, a decoupling controller is presented that employs an accelerometer-based force feedback system for measuring the undesired forces in off-axis which does not need any additional hardware. The simulation results indicate that the force feedback methodology is very effective in controlling the off-axis drift of the coaxial helicopter. © 2018 IEEE.
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    A USER AUTHENTICATION AND ACCESS CONTROL SCHEME FOR IoT-BASED HEALTHCARE USING BLOCKCHAIN
    (Institute of Electrical and Electronics Engineers Inc., 2021) Geetha, V.; Balakrishnan, B.
    IoT devices do not possess the potential to protect themselves from risk of the attackers as they are resource-constrained. Blockchain is arising as a decentralized and distributed technology with proficiency in delivering secure management, access control and user authentication for protecting data and services of IoT devices, guaranteeing integrity, confidentiality and availability. IoT-based healthcare applications has many benefits like reduced cost of healthcare, improved quality, remote monitoring of patients etc. Ensuring a robust and secure interactions between patient and healthcare providers is very important to protect sensitive medical data. A distributed and reliable user authentication and access control scheme to be used in IoT based Healthcare is designed and implemented here with the help of local gateways directly interfaced to smart contract based Ethereum Blockchain. The local gateways can manage multiple local IoT devices and improve scalability. This reduces the overhead of performing resource-consuming authentication tasks and blockchain-communication at the IoT devices. To exhibit the working of the framework, a case study is presented with two laptops and a Raspberry Pi. © 2021 IEEE.