Control signal transmitting apparatus, particularly for aircraft

• US 4,422,180 A
• Filed: 08/17/1981
• Issued: 12/20/1983
• Est. Priority Date: 09/02/1980
• Status: Expired due to Term

• Current Assignee: Messerschmitt-Boelkow-Blohm GmbH (Mercedes-Benz Group AG)
• Original Assignee: Messerschmitt-Boelkow-Blohm GmbH (Mercedes-Benz Group AG)
• Inventors: Wendt, Hans J.
• Primary Examiner(s): Martin, John C.
• Assistant Examiner(s): Coles, Edward L.
• Application Number:
  US06/293,277
• Time in Patent Office: 855 Days
• Field of Search: 455/603, 455/617, 455/612, 244/194
• US Class Current: 398/110
• CPC Class Codes: B64C 13/505 having duplication or stand-by provisions
• CPC Class Codes: G05D 1/0061 for transition from automatic pilot to manual pilot and vice versa
• CPC Class Codes: G05D 1/0077 using redundant signals or controls
• CPC Class Codes: H04B 10/27 Arrangements for networking
• CPC Class Codes: H04B 10/278 Bus-type networks

Abstract

A control system for controlling, for example, the operation of an aircraft or any other system requiring a flow of data back and forth between controlling and controlled units of the system, comprises a passive, multiply intermeshed conductor network (20, 24) of light conductors (11, 12). This network transmits control signals in the form of digital light signals from a control signal source, such as a control stick (9) in the cockpit of an aircraft or spacecraft, to respective controlled servo-units (14). The transmission system includes signal processors (10) including mixers (15) and information devices (16, 17, 18) interposed between the control signal source and the network (24) which is connected to the addressable controlled units, e.g., servo-units. The system is powered by a power supply device comprising several energy sources which may be switched on selectively as required. Such energy sources include the propulsion plant, for example, of an aircraft, an auxiliary turbine (112), a slip wind turbine (120) and an electric battery (128). Each energy source is connected to a measuring and switching unit (106, 115, 124, 131) through redundant transmission units (110) three of which are connected in parallel to one another and to the network (24). The transmission units (110) are further connected through the network (24) to a testing device (135) for monitoring and controlling the connected units or components.

Claims

1. In a system for transmitting control signals from a control source providing controlling signals to controlled units through signal light conductor network means operatively interconnecting said control source and said controlled units, wherein a number of light conductors form redundant connection paths between said control source and said controlled units, the improvement comprising a first plurality of longitudinal light conductors and a further plurality of cross light conductors repeatedly intermeshing said longitudinal light conductors for forming said light conductor network means with a multitude of passive closed circuit paths intermeshed with one another so that controlling signals can pass from said control source to a controlled unit even if some of these circuit paths should fail, said control source comprising means for producing said controlling signals in the form of digital light signals, signal processor means (10) including signal mixing means (15) and information processing means (16, 17, 18) operatively connected to said light conductor network means for addressing and actuating said controlled units.

2. The system of claim 1, wherein said controlled units comprise controlled surfaces (1, 2, 3, 4, 5) and servo-units operatively connected to said controlled surfaces and to said signal conductor network means, said servo-units (14) comprising intelligent memories (87) and processing units (8) for controlling and actuating said controlled surfaces.

3. The system of claim 1, wherein said controlled units comprise servo-units including position sensing and transducing means (78), and addressing means operatively connected to said position sensing and transducing means for providing a positional signal representing an instantaneous position of a controlled member.

4. The system of claim 1, wherein said signal conductor network means comprise a first network (20) of multiply intermeshed light conductors operatively interposed between said control source (9) and said mixing means of said signal processor means (10), and a second network (24) of multiply intermeshed light conductors operatively interposed between said signal processor means (10) and said controlled units (14).

5. The system of claim 1, wherein said control source (9) comprise a movable component, optronic means for sensing an instantaneous position, said optronic means comprising a movable member (29) and a stationary member (25a) arranged relative to the movable member to form a gap between the members, light emitting means operatively arranged on one of said members (30) for emitting a light signal, and light sensing means (26) arranged on the other of said members and for receiving a light signal emitted by said light emitting means, whereby the produced light signal represents the instantaneous position of said movable component of said control source.

6. The system of claim 1, wherein said control source (9) comprises electrical simulator means (37) including an addressable force or power simulator (35) having an electric motor (38) with a stator and with a rotor including a shaft, said control source further comprising a movable control stick and stationary mounting means for mounting said control stick, and stator being rigidly connected to said control stick mounting means, said shaft being rigidly connected to said control stick.

7. The system of claim 1, further comprising at least one display and operating device (92) including an image display screen (95) and an operating keyboard (95a), said device (92) being operatively connected to said mixing means through said light conductor network.

8. The system of claim 7, further comprising dialog means (100) operatively connected to said display and operating device (92), said analog means comprising a first section (101) for analyzing speech and a second section (102) for synthesizing speech.

9. The system of claim 1, wherein each of said information processing means comprise at least one memory (56) for storing information data, processor means (53) for processing information data, encoder means for encoding information representing signals, modulator means for modulating said signals, demodulating means for demodulating modulated signals, decoder means for decoding encoded signals, and a receiver for receiving information bearing signals.

10. The system of claim 4, wherein said light conductors of said first network (20) and said light conductors of said second network are provided in triplicate sets operatively connected in parallel to one another, said signal processor means including said signal mixing means and said information processing means also being provided in triplicate and connected in parallel to one another.

11. The system of claim 1, further comprising redundant power supply means (8, 112, 120, 128) operatively connected to said conductor means, said power supply means comprising measuring and switching means (106, 115, 124, 131), triplicate transmission means (110) connected in parallel for operatively connecting said measuring and switching means (106, 115, 124, 131) to said network means, and testing means (135) operatively connected to said network means and thus to said measuring and switching means.

12. The system of claim 11, wherein said power supply means comprise an aircraft propulsion plant (8), an auxiliary turbine (112), a slip wind turbine (120) and an electric battery (128).

13. The system of claim 10 or 11, wherein each of said transmission means comprises an encoder (153), a decoder (156), means (160) interconnecting said encoder and decoder, transmitter means (154) connected to said encoder means, and receiver means connected to said decoder means.

14. the system of claim 11, wherein said measuring and switching means (106, 115, 124, 131) comprise sensor means (158) for sensing an operating status or condition of a controlled unit, analog-to-digital converter means (152) operatively connected to said sensor means for converting a status representing analog signal into a digital signal, said measuring and swithcing means further comprising switching members (157, 159) connected to said transmission means (110) and to a controlled unit for switching off such controlled unit in response to malfunction of the controlled unit, whereby the measuring and switching means cooperate with the transmission means (110).

15. the system of claim 11, wherein said testing means (135) comprise three optronic information handling or processing means (147, 148, 149) operatively connected to said network means for receiving and transmitting information from and to the network means, three data processors (137, 138, 139) operatively connected to the respective information processing means for receiving and transmitting data, each of said data processors having its own memory means (140, 141, 142) for storing data therein, and two micro-processor voter means (143, 144) operatively connected to each of said three data processors for monitoring and sequencing the operation of said three data processors.

16. The system of claim 15, wherein said testing means further comprise external memory means (150) for storing maintenance data, said external memory means being operatively connected to any one of said three data processors.

17. The system of claim 15, further comprising at least one network analysing means (163) operatively connectable to said testing means for analysing the operational status of said network means.

18. The system of claim 15, comprising three network analysing means (163) each of which is operatively connected to its respective data processor (137, 138, 139) of said testing means.

19. The system of claim 17 or 18, wherein said network analysing means comprise operating means capable of handling colored analysing light signals the color of which differs from that of any colored operating light signal.

20. The system of claim 11, wherein said testing unit (135) is operatively connected to the system for monitoring and controlling any component of the system.

21. The system of claims 1 or 4, wherein said light conductors comprise fiber optical conductors which are made of a colored material.