588 research outputs found

    An adaptive learning control system for aircraft

    Get PDF
    A learning control system and its utilization as a flight control system for F-8 Digital Fly-By-Wire (DFBW) research aircraft is studied. The system has the ability to adjust a gain schedule to account for changing plant characteristics and to improve its performance and the plant's performance in the course of its own operation. Three subsystems are detailed: (1) the information acquisition subsystem which identifies the plant's parameters at a given operating condition; (2) the learning algorithm subsystem which relates the identified parameters to predetermined analytical expressions describing the behavior of the parameters over a range of operating conditions; and (3) the memory and control process subsystem which consists of the collection of updated coefficients (memory) and the derived control laws. Simulation experiments indicate that the learning control system is effective in compensating for parameter variations caused by changes in flight conditions

    An adaptive learning control system for aircraft

    Get PDF
    A learning control system is developed which blends the gain scheduling and adaptive control into a single learning system that has the advantages of both. An important feature of the developed learning control system is its capability to adjust the gain schedule in a prescribed manner to account for changing aircraft operating characteristics. Furthermore, if tests performed by the criteria of the learning system preclude any possible change in the gain schedule, then the overall system becomes an ordinary gain scheduling system. Examples are discussed

    Investigation of the Ectocranial Squamosal Suture to Estimate Age-at-Death

    Get PDF

    Students’ perception towards hospitality education: an Anglo-Cypriot critical study

    Get PDF
    The study investigates hospitality students' attitude towards hospitality education and hospitality careers. A qualitative approach was adapted to record students' attitude in the UK and Cyprus. The findings revealed that participants share common concerns and expectations regarding hospitality education and careers. A number of cognitive-person and external variables are perceived to act as influencing factors on hospitality education and careers, raising questions with regard to the student preparedness for the industry. This study provides a theoretical underpinning to hospitality literature that can be used to further fruitful thinking with implications for practice and further research
    • …
    corecore