Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method and apparatuses for controlling high wing loaded parafoils










Image Number 11 for United States Patent #8131405.

An adaptive guidance system (AGS) regulates the altitude and heading of a parasail to arrive at a target at a prescribed altitude. Since the altitude profile depends both on unknown wing loading, and wind magnitude and direction, the AGS estimates the glide slope and wind on the fly and provides a command to a stability augmentation system (SAS) that results in the desired glide slope and heading by performing a sequence of maneuvers and sensing the response. According to one embodiment, the SAS operates in the linear region and includes a PID controller that uses the difference between the actual heading and heading command to create an actuator output. The actuator output is limited by a position/rate limiter that imposes the physical limitations of the response time of the actuator/servos and position limits to prevent entering the nonlinear region. Alternatively, an adaptive SAS operates in both the linear and nonlinear region and includes a neural network (NN) that receives an error signal (difference between a reference model and actual heading) which is used to adapt the weights of the NN.








 
 
  Recently Added Patents
Idle stop and go system and method for controlling thereof
Method and system for monitoring service quality in a mobile node
Computer program and apparatus for evaluating signal propagation delays
Maesa japonica extracts and methods of use
Three-term predictive adder and/or subtracter
Image processing apparatus, method, and storage medium for performing soft proof processing
Information processing apparatus and power supply controlling method
  Randomly Featured Patents
Methods of treatment with Syk inhibitors
Interrogation of an object for dimensional and topographical information
Programmable frequency synthesizer with I/Q outputs
Locked loop system
Thin sanitary napkin having a central absorbent zone and a method of forming the napkin
Toilet tank and seat cover
Ambient temperature curing coating composition
Method for determining the wall thickness of a metal tube
Reactor for performing endothermic catalytic reactions
Container for cotton swabs