초록 ▼

An inertial guidance system including a true space stable platform is provided while retaining a simple two-degree-of-freedom gimbal system. An added third degree of freedom is provided by motions of the support itself which maintains desired platform orientation. The output of a third axis instrume

An inertial guidance system including a true space stable platform is provided while retaining a simple two-degree-of-freedom gimbal system. An added third degree of freedom is provided by motions of the support itself which maintains desired platform orientation. The output of a third axis instrument is used to maneuver the frame itself about the axis of the frame which most nearly will null any rotation about the platform roll or longitudinal axis. A rotational rate gyroscope is positioned on the space stable platform, and actuates the movement of the frame about the longitudinal or roll axis directly from the reading of the rotational movement along the roll axis of the platform.

대표청구항 ▼

A space-stable reference platform system comprising: a frame rotatable about at least one axis; a platform having three orthogonal axes; sensing means for sensing rotational movement of the platform about all of said orthogonal axes, said sensing means being positioned on said platform; inner and ou

A space-stable reference platform system comprising: a frame rotatable about at least one axis; a platform having three orthogonal axes; sensing means for sensing rotational movement of the platform about all of said orthogonal axes, said sensing means being positioned on said platform; inner and outer gimbals for mounting the platform for movement relative to the frame such that the platform is capable of two-degrees-of-freedom axial rotation about first and second orthogonal axes, the outer gimbal being pivotably mounted on the frame, the inner gimbal including the platform being pivotably mounted to the outer gimbal; first means responsive to said sensing means for rotating said gimBals relative to the frame in order to maintain the platform aligned in space with respect to said first and second axes; and second means responsive to said sensing means for rotating said frame in order to maintain the platform aligned in space with respect to the third orthogonal axis.