Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Satellite harmonic torque estimator










Image Number 9 for United States Patent #6672544.

A spacecraft embedded in a reference frame rotating relative to inertial space. The spacecraft generally includes actuators for maneuvering the spacecraft with respect to the reference frame, an attitude measurement device that measures the pitch and roll attitude of the spacecraft with respect to the reference frame, a control device adapted to keep the roll and pitch angles of the spacecraft close to the commanded roll and pitch angles, and a harmonic torque estimator adapted to read the commanded angular velocity of the spacecraft relative to an inertial frame, read momentum wheel speeds, read known predicted external torques and combine angular velocity, measured wheel speed and known external torque to produce an estimated observable periodic torque.








 
 
  Recently Added Patents
Integrated advance copper fuse combined with ESD/over-voltage/reverse polarity protection
Phosphor adhesive sheet, light emitting diode element including phosphor layer, light emitting diode device, and producing methods thereof
Automated user interface adjustment
Scattering spectroscopy employing hotspot-aligned nanopores
Container
Support member, rotation device comprising such a support and rolling bearing assembly including such a detection device
Microporous membranes and methods for producing and using such membranes
  Randomly Featured Patents
Wireless systems having multiple electronic devices and employing simplified fabrication and matching, and associated methods
Heat-shrinkable or heat-expandable products from hydrogenated polybutadiene
System and method for optimizing temperature operating ranges for a thermal inkjet printhead
Broadcast fax transmission system
Inflatable soccer goal
Urea reduction of NO.sub.x in combustion effluents
Systems, methods, and logic for generating statistical research information
High affinity antibody antagonists of interleukin-13 receptor alpha 1
Method to assist identification of a defective functional unit in a technical system
Method and system for visually indicating a selection query