Aircraft simulator and method

• US 5,634,794 A
• Filed: 03/23/1995
• Issued: 06/03/1997
• Est. Priority Date: 10/29/1990
• Status: Expired due to Fees

• Current Assignee: Sensor Technologies & Systems, Incorporated (Citizens Financial Group Incorporated)
• Original Assignee: Sensor Technologies & Systems, Incorporated (Citizens Financial Group Incorporated)
• Inventors: Hart, William A., Eyermann, Roger E., Hildreth, Bruce L., Norris, Upton T. III, Trankle, Thomas L.
• Primary Examiner(s): CHENG, JOE H
• Application Number:
  US08/409,068
• Time in Patent Office: 803 Days
• Field of Search: 434/29, 434/30, 434/45, 434/53, 434/55, 434/56, 434/59, 434/61, 434/365, 434/37, 434/372, 364/578, 244/223, 73/862.05, 280/707, 180/197
• US Class Current: 434/37
• CPC Class Codes: G05G 2009/04762 Force transducer, e.g. strain gauge
• CPC Class Codes: G05G 2009/04766 providing feel, e.g. indexing means, means to create counterforce
• CPC Class Codes: G05G 5/03 Means for enhancing the operator's awareness of arrival of the controlling member at a command or datum position; Providing feel, e.g. means for creating a counterforce arrangements for indicating the position of the controlling member G05G1/015
• CPC Class Codes: G09B 9/28 Simulation of stick forces or the like

Abstract

An apparatus and method for simulating a desired response in accordance with an external applied force. The apparatus includes a member which is responsive to the applied force, an actuator coupled to the member for exerting a torque on the member, a force sensor for detecting the applied force, and a torque sensor for detecting the torque exerted by the actuator. Signals from the force sensor are used to determine the system response based upon a desired relation. The force sensor signals also are used to determine the actual system response based upon the physical characteristics of the apparatus. The detected torque is compared with the desired and the actual system response, and as a result of the comparison the torque exerted by the actuator onto the member is adjusted accordingly so that the member performs the desired system response. The actuator is preferably an electric motor so that the apparatus can simulate any desired response, notwithstanding the physical characteristics of the system.

Claims

1. An aircraft simulator device comprising:

a simulating control instrument responsive to a force applied by a pilot and a controlled load;

first detecting means for detecting said force applied by said pilot, said first detecting means being coupled to said simulating control instrument and outputting a force signal;

an actuator for exerting said controlled load on said simulating control instrument in response to a control signal, said actuator having a first end coupled to said simulating control instrument;

second detecting means for detecting said controlled load exerted by said actuator, said second detecting means being coupled to a second end of said actuator and outputting a torque signal in response to said detected controlled load; and

control means for generating said control signal in response to said force signal and said torque signal, said control signal being generated so that said actuator controls said simulating control instrument in accordance with a desired relation of a simulated control instrument of a simulated aircraft to said force applied by said pilot.

2. An aircraft simulator device as recited in claim 1, further comprising a host computer for controlling said aircraft simulator device and for storing a plurality of desired relations corresponding to respective aircraft.

3. An aircraft simulator device as recited in claim 2, wherein said host computer comprises means for recreating said force applied by said pilot in accordance with said simulated aircraft.

4. An aircraft simulator device as recited in claim 3, further comprising:

means for detecting a position of said simulating control instrument and outputting a position signal;

means for detecting a velocity of said simulating control instrument and outputting a velocity signal; and

wherein said control means generates said control signal in response to said position and velocity signals.

5. An aircraft simulator device as recited in claim 1, wherein:

said control means generates said control signal in response to a desired response signal and a system response signal;

said desired response signal is based on said force applied by said pilot and said desired relation to said force applied by said pilot; and

said system response signal is based on selected system factors of said aircraft simulator device.

6. An aircraft simulator device as recited in claim 5, further comprising a host computer for controlling said aircraft simulator device and for storing a plurality of desired relations corresponding to respective aircraft.

7. An aircraft simulator device as recited in claim 6, wherein said host computer comprises means for recreating said force applied by said pilot in accordance with said simulated aircraft.

8. An aircraft simulator device as recited in claim 7, further comprising:

means for detecting a position of said simulating control instrument and outputting a position signal;

means for detecting a velocity of said simulating control instrument and outputting a velocity signal; and

wherein said control means generates said control signal in response to said position and velocity signals.

9. A method for simulating an aircraft in response to a force applied by a pilot, comprising the steps of:

detecting said force applied by said pilot onto a simulating control instrument;

detecting a position of said simulating control instrument;

detecting a velocity of said simulating control instrument;

detecting a torque applied by an actuator onto said simulating control instrument;

determining a desired response of a simulated control instrument of said simulated aircraft based on said detected force applied by said pilot;

determining an actual response of said simulating control instrument based on said detected force applied by said pilot, said detected position, and said detected velocity; and

controlling said actuator to generate said torque on said simulating control instrument so that said detected torque approaches said desired response as corrected by said actual response.