Patent ID: 6422076
Filing Date: 2002-07-23
Classification: G01P

Abstract:
A compensation pendulous accelerometer comprising:a body; a pendulous unit positioned in said body, the pendulous unit being made of a unitary plate of a silicon monocrystal and comprising a movable vane on a flexible suspension and further comprising a support frame with protrusions on two sides of the support frame for positioning the movable vane; first and second electrical insulation members each of which is attached to a respective one of said protrusions on the two sides of said support frame; a first magnetic system, comprising a first core, a first permanent magnet and a first pole piece; a third electrical insulation member, on which said first magnetic system is secured; a second magnetic system, comprising a second core, a second permanent magnet and a second pole piece; a fourth electrical insulation member, on which said second magnetic system is secured; a torquer having a first coil with leads and a second coil with leads; the first coil is positioned in a clearance of said first core and secured on one side of said movable vane; the second coil is positioned in a clearance of said second core and secured on another side of the movable vane; said flexible suspension comprising at least two flexible members arranged at an angle of 90 degrees relative to one another, symmetrically relative to an axis of symmetry of said pendulous unit; each of said third and fourth electrical insulation members is made in the form of a bush that encompasses said first and second cores of said first and second magnetic systems along, an outer side surface of said first and second cores; said support frame of said pendulous unit having said protrusions positioned on the two sides of the support frame abuts against a respective face of said third and fourth electrical insulation members forming common planes with faces of said cores facing said pendulous unit; and means for fixing the magnetic systems relative to said pendulous unit, the means for fixing the magnetic systems relative to said pendulous unit being placed on said pendulous unit and on each of said third and fourth electrical insulation members.