Actively stabilized platform system
First Claim
1. A system comprising:
- a stabilized structure;
a base structure for supporting said stabilized structure;
an enclosure to protect said system from environment elements;
first sensor means for measuring angular displacements of said stabilized structure with respect to said base structure; and
second sensor means for measuring acceleration data and acceleration vector angles; and
processing means for receiving the angular displacements of said stabilized structure with respect to said base structure from said first sensor means and determining an angle of said base structure relative to said stabilized structure, for receiving the acceleration data and acceleration vector angles from said second sensor means and determining a direction of local vertical relative to said base structure, and for maintaining said stabilized structure at a desired orientation utilizing the angle of said base structure relative to said stabilized structure and the direction of local vertical relative to said base structure.
1 Assignment
0 Petitions
Accused Products
Abstract
A stabilized platform useable for various purposes to provide compensation for motion in two axes, such as pitch and roll on a ship. The system operates independently of the object to be stabilized and without the use of gyroscopes by using accelerometers, position sensors and a proportional drive controller augmented with estimation and filtering. The mechanical design reduces size, weight, and power requirements, by providing a system including a stabilized structure; a base structure for supporting the stabilized structure; an enclosure to protect the system from environment elements; first sensors for measuring angular displacements of the stabilized structure with respect to the base structure; and second sensors for measuring acceleration data and acceleration vector angles; and a processor for receiving the angular displacements of the stabilized structure with respect to the base structure from the first sensors and determining an angle of the base structure relative to the stabilized structure, for receiving the acceleration data and acceleration vector angles from the second sensors and determining a direction of local vertical relative to the base structure, and for maintaining the stabilized structure at a desired orientation utilizing the angle of the base structure relative to the stabilized structure and the direction of local vertical relative to the base structure.
68 Citations
49 Claims
-
1. A system comprising:
-
a stabilized structure; a base structure for supporting said stabilized structure; an enclosure to protect said system from environment elements; first sensor means for measuring angular displacements of said stabilized structure with respect to said base structure; and second sensor means for measuring acceleration data and acceleration vector angles; and processing means for receiving the angular displacements of said stabilized structure with respect to said base structure from said first sensor means and determining an angle of said base structure relative to said stabilized structure, for receiving the acceleration data and acceleration vector angles from said second sensor means and determining a direction of local vertical relative to said base structure, and for maintaining said stabilized structure at a desired orientation utilizing the angle of said base structure relative to said stabilized structure and the direction of local vertical relative to said base structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. A method of maintaining a stabilized structure at a desired orientation, comprising the steps of:
-
measuring angular displacements of the stabilized structure with respect to a base structure; and measuring acceleration data and acceleration vector angles; processing the angular displacements of the stabilized structure with respect to the base structure and determining an angle of the base structure relative to the stabilized structure; and processing the acceleration data and acceleration vector angles and determining a direction of local vertical relative to the base structure, and for maintaining the stabilized structure at a desired orientation utilizing the angle of the base structure relative to the stabilized structure and the direction of local vertical relative to the base structure.
-
-
26. A system comprising:
-
a stabilized structure; a base structure for supporting said stabilized structure; an enclosure to protect said system from environment elements; a first sensor for measuring angular displacements of said stabilized structure with respect to said base structure; and a second sensor for measuring acceleration data and acceleration vector angles; and a processor for receiving the angular displacements of said stabilized structure with respect to said base structure from said first sensor and determining an angle of said base structure relative to said stabilized structure, for receiving the acceleration data and acceleration vector angles from said second sensor and determining a direction of local vertical relative to said base structure, and for maintaining said stabilized structure at a desired orientation utilizing the angle of said base structure relative to said stabilized structure and the direction of local vertical relative to said base structure. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
-
Specification