Patent ID: 6252335
Filing Date: 2001-06-26
Classification: G01P

Abstract:
An accelerometer comprising:a cantilevered beam having a fixed end and a free end;said cantilevered beam being composed of at least one piezoelectric layer and at least one supporting layer;an inertial mass mounted at said free end of said cantilevered beam;said piezoelectric layer having a modulus of elasticity E.sub.1 and a thickness t.sub.1, and said supporting layer having a modulus of elasticity E.sub.2 and a thickness t.sub.2 ; anda ratio of the thickness t.sub.1 relative to the thickness t.sub.2 being in a range between 2 and 4, and a ratio of said modulus of elasticity E.sub.2 relative to said modulus of elasticity E.sub.1 being in a range between 8 and 12.