Resources Contact Us Home
Aircraft high altitude vertical flight path and speed control system

Image Number 10 for United States Patent #5079711.

A variable bandwidth factor KALT is applied in a total energy control system to obtain a reduction in throttle activity while maintaining system stability. The system has a total energy control loop and an energy distribution control loop. In the former, a net thrust command signal T.sub.c is generated to reduce the total energy error to zero. In the latter, an elevator position command signal .delta.e.sub.c is generated to reduce the energy rate distribution error, i.e. correct the distribution of energy between kinetic energy (speed) and potential energy (altitude). The error signal input into each loop has a flight path component and a speed component. The factor KALT is applied to both components of the total energy error to reduce the bandwidth of the total energy control loop with increasing altitude and thereby reduce throttle activity. The factor KALT is also applied to one of the components of the energy distribution error to prioritize reduction of that component to zero by control of elevator position. Preferably, speed control is prioritized, and energy errors are channeled into short term deviations in altitude.

  Recently Added Patents
Electrical converter with variable capacitor
Cache memory control device, semiconductor integrated circuit, and cache memory control method
Light emitting element, method for manufacturing the light emitting element, optical element and method for manufacturing the optical element
Flat panel crystal display employing simultaneous charging of main and subsidiary pixel electrodes
Gangable electrical box and leveling assembly
Orthogonal tunable antenna array for wireless communication devices
Method for driving electrophoretic display device, electrophoretic display device, and electronic device
  Randomly Featured Patents
Portable, spring-based cone
Optical scanning apparatus with optical correction for scan mirror surface tilt
Hydraulic motor and brake control system and method of controlling the same
Rail having high resistance to wear in its head and high resistance to rupture in its foot
Closure unit for molding tools
Shared interrupt controller for a multi-threaded processor
Apparatus for freeze-drying foodstuffs and medicaments
Two-dimensional precise positioning device for use in a semiconductor manufacturing apparatus
Front face of a zipper portion of a wipes container