System for analysis and control of dynamic characteristics of mechanisms

Claim 1

A DYNAMIC MOTION ANALYZER COMPRISING MEANS COUPLED TO AND MOVING WITH A MECHANISM TO BE ANALYZED FOR PROVIDING AT LEAST TWO SETS OF INCREMENTAL INDICIA, THE INCREMENTAL INDICIA OF THE TWO SETS BEING DISPOSED TO MOVE ALONG PARALLEL PATHS DURING MOVEMENT OF THE MECHANISM, THE INCREMENTAL INDICIA OF EACH SET BEING SUBSTANTIALLY ALIKE AND MOVING AT LIKE NOMINAL VELOCITIES DURING MOVEMENT OF THE MECHANISM, FIRST AND SECOND SENSING MEANS, EACH DISPOSED IN FIXED RELATION TO THE MECHANISM AND ADJACENT TO A DIFFERENT ONE OF THE INCREMENTAL INDICIA SETS, EACH OF THE SENSING MEANS BEING RESPONSIVE TO THE PASSAGE OF INCREMENTAL INDICIA WITH RESPECT THERETO AND PROVIDING SIGNALS RESPRESENTATIVE THEREOF, MEANS COUPLED TO THE FIRST AND SECOND SENSING MEANS AND RESPONSIVE TO THE SIGNALS THEREFROM FOR PROVIDING A COMPLEX MULTIFREQUENCY WAVE REPRESENTATIVE OF TIME DIFFERENCES BETWEEN SUCCESSIVE PAIRS OF INCREMENTAL INDICIA OF THE TWO SETS, AND MEANS COUPLED TO RECEIVE THE COMPLEX MULTIFREQUENCY WAVE FOR FILTERING INDIVIDUAL FREQUENCY COMPONENTS THEREFROM, WHEREBY INDIVIDUAL CONTRIBUTIONS TO MOVEMENT OF THE MECHANISM MAY BE MEASURED.