Accession Number : ADA313739

Title :   Biodynamic and Spasticity Reduction in Joystick Control Via Force Reflection.

Descriptive Note : Final rept. Mar 92-Sep 95,

Corporate Author : ARMSTRONG LAB WRIGHT-PATTERSON AFB OH CREW SYSTEMS DIRECTORATE

Personal Author(s) : Repperger, Daniel W.

PDF Url : ADA313739

Report Date : SEP 1995

Pagination or Media Count : 31

Abstract : When pilots are subjected to exogonous environmental influences such as complex acceleration fields during unusual aircraft maneuvers, these effects disturb the normal motion of the human body producing undesired biodynamic effects. These disturbances, in turn, affect how the pilot controls his aircraft. Thus, it becomes a problem of interest to investigate joystick controllers that show some resistance to these untoward effects. Force reflection algorithms, when applied to a joystick controller are shown to mitigate these unwanted motions induced by the environment. These same results also extrapolate to the problem involving the neuromotor disabled patients who suffer from spasticity. The disturbance in this case is internal, not external, but force reflecting stick controllers are shown to reduce these undesired responses. Data are given from pilots involving the external disturbances such as complex acceleration fields as well as for neuromotor disabled patients where disturbances are internally generated. Some general rules for applying these force reflection scenarios are given.

Descriptors :   *HUMAN FACTORS ENGINEERING, *AIRCRAFT EQUIPMENT, *BIODYNAMICS, *CONTROL STICKS, ALGORITHMS, SCENARIOS, AIRCRAFT, ACCELERATION, PILOTS, MOTION, REFLECTION, HUMAN BODY, EXTERNAL, FLIGHT MANEUVERS.

Subject Categories : Aircraft
      Human Factors Engineering & Man Machine System

Distribution Statement : APPROVED FOR PUBLIC RELEASE