Etegent Technologies, Ltd.

Kevin Sigmund

Stuart James Shelley

Richard Allan Roth, Ii

Oleg Lobkis

A strut suitable for use in parallel manipulator and other applications utilizes an actuation member that is subjected to a quasi-static axial tensioning force to effectively preload the strut to provide axial stiffness and bending flexibility at one or more ends of the strut.

Preloaded strut

An active mechanical waveguide including an ultrasonically-transmissive material and a plurality of reflection points defined along a length of the waveguide may be driven at multiple resonant frequencies to sense environmental conditions, e.g., using tracking of a phase derivative. In addition, frequency-dependent reflectors may be incorporated into an active mechanical waveguide, and a drive frequency may be selected to render the frequency-dependent reflectors substantially transparent.

Distributed active mechanical waveguide sensor driven at multiple frequencies and including frequency-dependent reflectors

A sensor with a mechanical waveguide may be characterized using test ultrasonic signals to generate a baseline signature, and the baseline signature may later be used to detect faults in the sensor.

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Newtown, OH, United States of America

Kevin Sigmund