STRAPDOWN INERTIAL SYSTEM OF THE CONTROLLED OBJECT Russian patent published in 2022 - IPC G01C21/00 

FIELD: navigation.

SUBSTANCE: invention relates to inertial navigation, namely to navigation equipment determining the parameters of motion of the controlled object, and can be applied in navigation and automatic control systems. The strapdown inertial system includes a body, a linear acceleration measurement apparatus with three sensing elements located along three mutually perpendicular axes, an angular velocity measurement apparatus with three fibre-optic channels located along three mutually perpendicular axes, an electronics unit consisting of a data collection unit and a computer unit, and a secondary power supply unit. The system includes a rigid load-bearing base made in the form of a disk, secured on one side whereof is the angular velocity measurement apparatus, and on the reverse side - the linear acceleration measurement apparatus with the data collection unit, combined into a sensor unit with the condition of ensuring parallel alignment of the measuring axes of the linear acceleration measurement apparatus, the angular velocity measurement apparatus, and the sensor unit. The sensor unit is secured in the body constituting a part of the controlled object, ensuring the parallel alignment of the measuring axes of the sensor unit and the axes of the body. The system also includes a rigid frame, attached with one side to the rigid supporting base and with the other side to the body. Secured inside the frame is the computer unit made on printed circuit boards, and each of the boards is installed in a separate support frame. The secondary power supply unit is installed outside of the frame at the maximum permitted distance from the sensor unit. In a particular case of implementation, a satellite navigation unit located inside the frame is included in the system.

EFFECT: increase in the accuracy of measurment of motion parameters with ensured resistance to external affecting factors.

3 cl, 2 dwg