초록 ▼

An apparatus for measuring rate of turn employing a vibrating tuning fork type sensor in which the tynes vibrate in a coaxial manner. This arrangement eliminates reaction torques and forces at the base of the tuning fork which allows the tynes to freely deflect into an elliptical pattern during an i

An apparatus for measuring rate of turn employing a vibrating tuning fork type sensor in which the tynes vibrate in a coaxial manner. This arrangement eliminates reaction torques and forces at the base of the tuning fork which allows the tynes to freely deflect into an elliptical pattern during an input turn rate. Sensors are employed which monitor the shape of this elliptical pattern, this shape being proportional to angular turn rate.

대표청구항 ▼

An apparatus for measuring rate of turn, comprising: (A) mounting pedestal; (B) common base mounted to said mounting pedestal; (C) tyne one substantially fixed to said common base; (D) tyne two substantially fixed to said common base such that vibration effects with said tyne one are virtually cance

An apparatus for measuring rate of turn, comprising: (A) mounting pedestal; (B) common base mounted to said mounting pedestal; (C) tyne one substantially fixed to said common base; (D) tyne two substantially fixed to said common base such that vibration effects with said tyne one are virtually cancelled whereas said tyne one and said tyne two act as coaxial tynes of a tuning fork whereas there is virtually no movement in said mounting pedestal; (E) drive means associated with said tyne one and said tyne two for oscillating said tyne one and said tyne two in opposition to one another as in a tuning fork, at a selected frequency in a prescribed direction; (F) first pickoff means for sensing relative motion of said tyne one to said tyne two whereas said first pickoff means senses a selected proportion of the motion in the driven oscillating direction as well as a selected proportion of the resultant force motion which is perpendicular to the driven oscillating direction; (G) second pickoff means for sensing relative motion of said tyne one to said tyne two whereas said second pickoff means senses a selected proportion of the motion in the driven oscillating direction as well as a selected proportion of the motion in the resultant force direction which is perpendicular to the driven oscillating direction whereas the phase of either the said selected proportion of the motion in the resultant force direction or of said selected proportion of the motion in the driven oscillating direction is opposite to the corresponding selected proportion of said first pickoff means, for sensing any phase difference of said selected frequency related to said first pickoff means, whereas said phase difference corresponds to a measurement of rate of turn of the apparatus.