Patent ID: 8479583

Claim:
A bend sensor, comprising: a plurality of ionic polymer metal composite sections each section having a top conductive surface and a bottom conductive surface, wherein all of the sections are of the same dimensions; a plurality of dielectric sections made of a thin flexible light weight dielectric material, wherein all of the sections are of the same dimensions as the plurality of ionic polymer metal composite sections, wherein the plurality of ionic polymer metal composite sections are stacked vertically with a single dielectric section between each individual ionic polymer metal composite section, such that none of the top conductive surfaces of the plurality of ionic polymer metal composite sections is in electrical contact with any of the bottom conductive surface of the plurality of ionic polymer metal composite sections; a first plurality of conducting wire leads that join at one end to a single wire, wherein a single conducting wire lead of each first plurality of conducting wire leads is joined to each of the top conductive surfaces of the plurality of ionic polymer metal composite sections thereby electrically connecting all of the top conductive surfaces of the plurality of ionic polymer metal composite sections together in parallel; a second plurality of conducting wire leads that join at one end to a single wire, wherein a single conducting wire lead of each second plurality of conducting wire leads is joined to each of the bottom conductive surfaces of the plurality of ionic polymer metal composite sections thereby electrically connecting all of the bottom conductive surfaces of the plurality of ionic polymer metal composite sections together in parallel; a coating of high-purity synthetic isoparaffin disposed over the surface of the stack of the plurality of ionic polymer metal composite and dielectric sections to maintain polymer hydration; an electric field measurement device electrically joined to the plurality of ionic polymer metal composite sections through the first plurality of conducting wire leads and the second plurality of conducting wire leads; and a linear quadratic regulator based controller joined to said electric field measurement device.