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About

S. Janardhanan is a control systems researcher whose work centers on advanced sliding mode control techniques for robotic systems, with particular expertise in nonlinear control, underactuated manipulators, and autonomous mobile platforms. His research has made meaningful contributions to the design of robust controllers capable of handling real-world uncertainties, actuator failures, and nonlinear dynamics — challenges that are especially critical in space robotics and autonomous navigation. Among his most impactful contributions is his development of higher order sliding mode (HOSM) control algorithms for rigid robotic manipulators, which achieve finite-time error convergence while maintaining continuity in control inputs — a significant practical advantage over conventional sliding mode approaches. His 2013 work on trajectory tracking for two-wheeled mobile robots, which has garnered 24 citations, demonstrates how second-order sliding mode methods can deliver both disturbance rejection and smooth torque inputs simultaneously. Janardhanan has also addressed the challenging problem of controlling underactuated robotic manipulators — systems where joints are either intentionally passive or have failed — contributing terminal sliding mode and third-order sliding mode solutions relevant to lightweight, cost-effective space systems. His research on space rovers further extends these methods to hostile remote environments. Collectively, his body of work, accumulating over 70 citations, reflects sustained and focused contributions to robust robot control theory and application.