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US patent 4398889 from 1981

http://www.freepatentsonline.com/4398889.html

"A flight simulating system is provided with a manually operated control member connected to a servomechanism which responds to manual input by the control member and reacts to provide realistic feedback to the control member in accord with simulated flight conditions. For this purpose, a combining circuit, a dividing circuit and two integrator circuits are provided in series. The combining circuit has an input which represents manual input force to the control member and another input from the flight-simulating computer which represents simulated internal forces acting on the controlled member and the dividing circuit divides the output of the combining circuit by a value representing the mass of the control member to produce a control member acceleration-related signal. This acceleration-related signal is integrated twice to produce, respectively, a control member velocity-related signal and a control member position-related signal. These various signals are fed back to the servomechanism to provide a response which produces the correct "feel" at the control member for the flight condition under simulation."

Posted by: Nigel Johnstone   Posted on: 03/28/05 You are currently: a Guest | Members login | Terms of Use

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