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Charge balancing is an important task for the stimulators used in chronic electrical stimulation applications. In this paper, a pulse-width-adaptive (PWA) active charge balancing (ACB) circuit with pulse-insertion based residual charge compensation and quantization is proposed to fulfil this task. The proposed circuit dynamically adapts the pulse width (Tc) of counter phase (Φc) over a stimulation...
This paper designs a time-varying nonlinear switching manifold in an optimal fashion for a class of nonlinear systems by developing the successive approximation approach of differential equation into infinite-time horizon. Based on the reaching law approach, we obtain a reach the nonlinear sliding surface. The stability of the nonlinear sliding mode is analyzed. The convergence velocity of every state...
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