• MANISH DEV SHRIMALI

      Articles written in Indian Academy of Sciences Conference Series

    • Dynamics of nonlinear oscillators with time-varying conjugate coupling

      KIRAN YADAV AMIT SHARMA MANISH DEV SHRIMALI

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      We explore the dynamical consequences of time-varying conjugate coupling in a system of nonlinear oscillators. We analyze the behavior of coupled systems with respect to the coupling switching frequency using normalized average synchronization error and average amplitude. We show that this form of time-varying interaction can induce an anomalous transition like the emergence of oscillation as well as the intermittent state with different dynamical states. This behavior is analyzed by numerical studies of specific cases of the Rössler oscillator and an ecological model of predator–prey systems.

      PACS Nos 05.45.Xt

    • Spatial feedback control on multistability in hidden attractors

      SHIVA DIXIT M PAUL ASIR AWADESH PRASAD NIKOLAY V KUZNETSOV MANISH DEV SHRIMALI

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      We propose an intermittent spatial feedback scheme to control the hidden dynamics of the radio-physical oscillator model with coexisting attractors. The feedback is active only in the part of the state-space and inactive inthe rest of the regions.We found that this dynamic feedback scheme is effective in controlling the multistability as well as the hidden dynamics of the model. The eminence of the proposed method lies in the fact that the transitionto monostable oscillating states and the steady state occurs even for the smaller feedback strength. The elimination of the multiple states and the steady state transitions were affirmed by calculating the basin stability measure andbifurcation diagrams. We show that for suitable feedback active region and the feedback strength the dynamics of the model can be controlled efficiently

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