Imrul Qais, Chayan Bhawal, and Debasattam Pal, Singular LQR optimal control of DAEs: A feedback solution, Automatica, vol. 173, 2025. [Link]
Imrul Qais, Chayan Bhawal, and Debasattam Pal, Optimal singular LQR problem: A PD feedback solution, SIAM Journal on Control and Optimization (SICON), vol. 61, no. 4, pages 2655 - 2681, 2023. [Link]
Ashish Kothyari, Chayan Bhawal, Madhu N Belur, and Debasattam Pal, Imaginary axis eigenvalues of Hamiltonian matrix: controllability, defectiveness and the epsilon-characteristic, International Journal of Control, vol. 96, no. 12, pages 2958 - 2975, 2022. [Link]
Chayan Bhawal, Debasattam Pal, and Madhu N Belur, Closed form solutions of singular KYP lemma: strongly passive systems, and fast lossless trajectories, International Journal of Control, vol. 93, no. 5, pages 1204 - 1217, 2020 (Published online Jul 2018). [Link]
Chayan Bhawal and Debasattam Pal, Almost every single-input LQR optimal control problem admits a PD feedback solution, IEEE Control Systems Letters, vol. 3, no. 2, pages 452 - 457, 2019. [Link]
Chayan Bhawal, Imrul Qais, and Debasattam Pal, Constrained generalized continuous algebraic Riccati equations (CGCAREs) are generically unsolvable, IEEE Control Systems Letters, vol. 3, no. 1, 2019. [Link]
Chayan Bhawal, Debasattam Pal, Sandeep Kumar, and Madhu N Belur, New results and techniques for computation of stored energy in lossless/all-pass systems, IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 64, no. 1, pages 72-85, 2017. [Link]
Conferences
Paraj Ganchaudhuri and Chayan Bhawal, Least energy trajectory generation for quadrotors using rotor acceleration as control inputs, International Conference on Control, Decision and Information Technologies (CoDIT), Split, Croatia, July 15 - July 18, 2025.
Paraj Ganchaudhuri and Chayan Bhawal, Maneuver based dynamic power consumption model of a hover-linearized quadcopter, IEEE Guwahati Subsection Conference (GCON), NERIST, Arunachal Pradesh, June 18 - June 20, 2025.
Gangadari Varaprasad, Chayan Bhawal and Indrani Kar, A distributed algorithm for assigning UAVs to multiple heterogeneous positions of interest, Indian Control Conference (ICC), IISER Bhopal, December 09 - December 11, 2024.
Biswanath Paul, Parijat Bhowmick, and Chayan Bhawal, A dynamic consensus control scheme for heterogeneous DC/DC buck converter systems utilizing ‘mixed’ negative imaginary technique, IEEE Conference on Decision and Control (CDC), Milan, Italy, December 16 - December 19, 2024.
Paraj Ganchaudhuri and Chayan Bhawal, Power consumption of a quadrotor based on maneuvers, IEEE Guwahati Subsection Conference (GCON), Guwahati, India, June 23 - June 25, 2023.
Chayan Bhawal, Debasattam Pal, and Madhu N Belur, Lossless trajectories of singularly passive systems, Mathematical Theory of Networks and Systems (MTNS), Bayreuth, Germany, September 12 - September 16, 2022.
Imrul Qais, Chayan Bhawal, and Debasattam Pal, A Hamiltonian system based approach for the computation of the maximal rank-minimizing solution of the LMI arising from a singular LQR problem, European Control Conference (ECC), London, UK, July 12 - July 15, 2022. [Link]
Imrul Qais, Debasattam Pal, and Chayan Bhawal, A geometric characterization of the slow space of the Hamiltonian system arising from the singular LQR problem, IFAC World Congress, July 12 - July 17, 2020. [Link]
Chayan Bhawal, Jan Heiland, and Peter Benner, PD controllers to solve single-input, index-1 DAE based LQR problems, European Control Conference (ECC), Saint Petersburg, Russia, May 12 ‑ May 15, 2020. [Link]
Chayan Bhawal, Debasattam Pal, and Madhu N. Belur, On circulant Lyapunov operators, two-variable polynomials, and DFT, Indian Control Conference (ICC), Hyderabad, December 18 - December 20, 2019. [Link]
Chayan Bhawal and Debasattam Pal, On solvability of CGCARE for LQR problems with zero input-cost, IEEE Conference on Decision and Control (CDC), Nice, France, December 11 - December 13, 2019. [Link]
Ashish Kothyari, Chayan Bhawal, Madhu N Belur, and Debasattam Pal, Defective Hamiltonian matrix imaginary eigenvalues and losslessness, Indian Control Conference (ICC), Delhi, January 9 - January 11, 2019. [Link]
Chayan Bhawal, Debasattam Pal, and Madhu N Belur, On solutions of bounded-real LMI for singularly bounded-real systems, European Control Conference, Limassol, Cyprus, June 12 - June 15, 2018. [Link]
Chayan Bhawal, Debasattam Pal, and Madhu N Belur, On the link between storage functions of allpass systems and Gramians, IEEE Conference on Decision and Control (CDC), Melbourne, Australia, December 12 - December 15, 2017. [Link]
Chayan Bhawal, Debasattam Pal, and Madhu N Belur, A 2D-DFT based method to compute the Bezoutian and a link to Lyapunov equations, Indian Control Conference (ICC), Guwahati, India, January 4 - January 6, 2017. [Link]
Sandeep Kumar, Chayan Bhawal, Debasattam Pal, and Madhu N Belur, New results and algorithms for computing storage functions: The lossless/allpass cases, European Control Conference (ECC), Aalborg, Denmark, June 29 - July 1, 2016. [Link]
Book Chapter
Chayan Bhawal, Sandeep Kumar, Debasattam Pal, and Madhu N. Belur, New properties of ARE solutions for strictly dissipative and lossless systems, Mathematical Control Theory II: Behavioral Systems and Robust Control, Springer International Publishing, 2015. [Link]
PhD Thesis
Chayan Bhawal, Generalized Riccati theory: A Hamiltonian system approach, Department of Electrical Engineering, Indian Institute of Technology Bombay, 2019 [E-mail me for the thesis]