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The full architecture of an electrostatic kinetic energy harvester (KEH)based on the concept of near-limits KEH is reported. This concept refers to theconversion of kinetic energy to electric energy, from environmental vibrationsof arbitrary forms, and at rates that target the physical limits set by thedevice's size and the input excitation characteristics. This is achieved thanksto the synthesis of particular KEH's mass dynamics, that maximize the harvestedenergy. Synthesizing these dynamics requires little hypotheses on the exactform of the input vibrations. In the proposed architecture, these dynamics areimplemented by an adequate mechanical control which is synthesized by theelectrostatic transducer. An interface circuit is proposed to carry out thenecessary energy transfers between the transducer and the system's energy tank.A computation and finite-state automaton unit controls the interface circuit,based on the external input and on the system's mechanical state. The operationof the reported near-limits KEH is illustrated in simulations that demonstrateproof of concept of the proposed architecture. A figure of $68\%$ of theabsolute limit of the KEH's input energy for the considered excitation isattained. This can be further improved by complete system optimization thattakes into account the application constraints, the control law, the mechanicaldesign of the transducer, the electrical interface design, and the sensing andcomputation blocks.

Electrostatic Near-Limits Kinetic Energy Harvesting from Arbitrary Input Vibrations