The investigator using analog or hybrid computers in mechanism study encounters great complexity and a requirement for considerable equipment when a simulation is extended to accelerations and dynamics. This paper describes a resolver circuit which is a link analogy giving position, velocity, and acceleration terms in rectangular coordinates when driven with a voltage representing the angular acceleration of the link. It is an elaboration of former resolution methods dealing only with either position or velocity. Its utility involves a savings of computing components and it constitutes a fundamental building block when used in mechanism simulation.

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