[54] MULTI-AXES GYROSCOPE
[75] Inventor: William C. Dunn, Mesa, Ariz.
[73] Assignee: Motorola, Inc., Schaumburg, 111.
[21] Appl. No.: 810,062
[22] Filed: Dec. 19,1991
[51] Int. CI.* G01P 9/04
[52] U.S. CI 73/505
[58] Field of Search 73/505, 510, 517 AV
[56] References Cited
U.S. PATENT DOCUMENTS
4,654,663 3/1987 Alsenz et al 73/505
4,744,249 5/1988 Stewart 73/505
5,001,940 3/1991 Ogawa 73/505
5,025,346 6/1991 Tangetal 73/517 AV
Primary Examiner—John E. Chapman
Attorney, Agent, or Firm—Eugene A. Parsons
[57] ABSTRACT
A vibration gyroscope with a mass mounted for vibrational movement on a central post. Sensing capacitors are mounted adjacent the mass for sensing vibrational movement in two perpendicular axes. The mass includes a pair of elements mounted between the parallel arms of an H shaped frame and powered for equal and opposite vibrations so that no movement is imparted to the frame except that caused by forces induced by rotational movement.
10 Claims, 9 Drawing Sheets
