WO1992017828A3 - Signal selection system - Google Patents

Signal selection system Download PDF

Info

Publication number
WO1992017828A3
WO1992017828A3 PCT/US1992/002334 US9202334W WO9217828A3 WO 1992017828 A3 WO1992017828 A3 WO 1992017828A3 US 9202334 W US9202334 W US 9202334W WO 9217828 A3 WO9217828 A3 WO 9217828A3
Authority
WO
WIPO (PCT)
Prior art keywords
input signals
input
logic
values
selection
Prior art date
Application number
PCT/US1992/002334
Other languages
French (fr)
Other versions
WO1992017828A2 (en
Inventor
Bhalchandra R Tulpule
Steven A Avritch
Original Assignee
United Technologies Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by United Technologies Corp filed Critical United Technologies Corp
Priority to EP92917436A priority Critical patent/EP0592609B1/en
Priority to DE69224195T priority patent/DE69224195T2/en
Publication of WO1992017828A2 publication Critical patent/WO1992017828A2/en
Publication of WO1992017828A3 publication Critical patent/WO1992017828A3/en

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00—Control of position, course or altitude of land, water, air, or space vehicles, e.g. automatic pilot
    • G05D1/0055—Control of position, course or altitude of land, water, air, or space vehicles, e.g. automatic pilot with safety arrangements
    • G05D1/0077—Control of position, course or altitude of land, water, air, or space vehicles, e.g. automatic pilot with safety arrangements using redundant signals or controls
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B9/00—Safety arrangements
    • G05B9/02—Safety arrangements electric
    • G05B9/03—Safety arrangements electric with multiple-channel loop, i.e. redundant control systems

Abstract

A signal selection system has input thereto a plurality of redundant input signals (A, B, C, D) having varying values along with signals indicative of the validity of the plurality of input signals, comparison logic (42-52) compares all possible pairwise combinations of the input signals to determine which input signal in each of the input signal pairs has the greater value or to determine if the input signals in each pair have equal values. Selection logic (80) determines which one or more of the values of the input signals from the plurality of valid input signals are to be used to determine the output signal according to a predetermined criterion. The selection logic (80) has a plurality of combinational logic elements arranged to execute predetermined Boolean logic equations in determining which one or more of the values of the input signals from the plurality of valid inputs are to be used to determine the output signal (MID) according to the predetermined selection criterion.
PCT/US1992/002334 1991-04-01 1992-03-24 Signal selection system WO1992017828A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP92917436A EP0592609B1 (en) 1991-04-01 1992-03-24 Signal selection system
DE69224195T DE69224195T2 (en) 1991-04-01 1992-03-24 SIGNAL SELECTION DEVICE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/678,500 US5202679A (en) 1991-04-01 1991-04-01 Mid-value signal selection system
US678,500 1991-04-01

Publications (2)

Publication Number Publication Date
WO1992017828A2 WO1992017828A2 (en) 1992-10-15
WO1992017828A3 true WO1992017828A3 (en) 1992-11-26

Family

ID=24723046

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1992/002334 WO1992017828A2 (en) 1991-04-01 1992-03-24 Signal selection system

Country Status (4)

Country Link
US (1) US5202679A (en)
EP (1) EP0592609B1 (en)
DE (1) DE69224195T2 (en)
WO (1) WO1992017828A2 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5406247A (en) * 1993-04-30 1995-04-11 At&T Corp. Median value detection technique
FR2748829B1 (en) * 1996-05-17 1998-08-07 Hautbois Rene Pierre SECURE FAULT TOLERANT CONTROL DEVICE
GB2323195B (en) * 1997-03-14 1999-04-28 Samsung Electronics Co Ltd System status display device
US7421320B2 (en) * 2005-10-06 2008-09-02 The Boeing Company Methods and apparatus for implementing mid-value selection functions for dual dissimlar processing modules
US20140207353A1 (en) * 2005-12-09 2014-07-24 Stamatios Boulekos Acceleration adjuster for vehicles with an electronic accelerator
US7800412B2 (en) * 2008-02-12 2010-09-21 Honeywell International Inc. Fault detection and isolation of redundant signals
EP2329590A1 (en) * 2008-07-31 2011-06-08 BVR Technologies Co. A fail-passive electro-mechanical actuator utilizing dual controllers and a two-phase brushless motor
JP5423958B2 (en) * 2009-07-21 2014-02-19 セイコーエプソン株式会社 Signal determination circuit, integrated circuit device, and electronic apparatus
US8534599B2 (en) 2011-03-31 2013-09-17 Hamilton Sundstrand Corporation Redundant two stage electro-hydraulic servo actuator control
US9092313B2 (en) 2013-01-25 2015-07-28 Honeywell International Inc. System and method for three input voting

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2425665A1 (en) * 1978-05-10 1979-12-07 Boeing Co Signal selection appts. for redundant signal sources - supplies each channel with weighted average of signals from two less accurate sensors when precision sensor fails
EP0315227A2 (en) * 1987-11-02 1989-05-10 The Boeing Company Dual channel signal selection and fault detection system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3596107A (en) * 1969-07-09 1971-07-27 Collins Radio Co Signal selector
US4455820A (en) * 1976-09-09 1984-06-26 General Electric Company Control system and method for controlling a gas turbine in accordance with the temperature conditions thereof
US4472806A (en) * 1982-05-03 1984-09-18 The Boeing Company Signal selection and fault detection apparatus
US4771427A (en) * 1986-10-02 1988-09-13 United Technologies Corporation Equalization in redundant channels
AU606559B2 (en) * 1987-12-24 1991-02-07 Nec Corporation Circuit for comparing a plurality of binary inputs
JPH01187630A (en) * 1988-01-21 1989-07-27 Mitsubishi Electric Corp Size comparison circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2425665A1 (en) * 1978-05-10 1979-12-07 Boeing Co Signal selection appts. for redundant signal sources - supplies each channel with weighted average of signals from two less accurate sensors when precision sensor fails
EP0315227A2 (en) * 1987-11-02 1989-05-10 The Boeing Company Dual channel signal selection and fault detection system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEW ELECTRONICS vol. 20, no. 19, 29 September 1987, LONDON GB pages 43 - 48 K.S. SNELLING ET AL. 'FLIGHT CONTROL-IMPLEMENTING OF ACTIVE SYSTEMS' *

Also Published As

Publication number Publication date
US5202679A (en) 1993-04-13
DE69224195D1 (en) 1998-02-26
EP0592609B1 (en) 1998-01-21
EP0592609A1 (en) 1994-04-20
DE69224195T2 (en) 1998-05-07
WO1992017828A2 (en) 1992-10-15

Similar Documents

Publication Publication Date Title
WO1992017828A3 (en) Signal selection system
EP0756382A3 (en) Logic module with configurable combinational and sequential blocks
US4399416A (en) Floating point amplifier
EP0208939A3 (en) Arithmetic circuit for calculating absolute difference values
KR890013904A (en) Bit serial device
US5045714A (en) Multiplexer with improved channel select circuitry
EP0385637A3 (en) Learning machine with multi-input single output circuits connected in hierarchical structure
CA1085961A (en) One-bit-out-of-n-bit checking circuit
EP0400730B1 (en) Zero crossing detector arrangements
US3277462A (en) Parallel-parallel encoding system
WO1999013401A3 (en) Method and apparatus for processing a request to a boolean rule
GB2267613A (en) Programmable logic array cell using multiplexer logic
CA2046653A1 (en) Signal processing apparatus and method
US5079446A (en) Circuit configuration for generating combinatorial binary logic functions with multiplexers and inverters
JPH08139613A (en) Code coincidence detecting system
EP0334768A3 (en) Logic circuit having carry select adders
SU1644147A1 (en) Majority-redundant device
EP0425070B1 (en) One out of N checking apparatus and method
JPS6133536A (en) Logical division system
SU773930A1 (en) Decoder
CA1264072A (en) Reconfigurable parameter filter
SU1109628A1 (en) Decoder for multi-channel acoustic emission instruments
WO1990004823A3 (en) Optical signal processor
SU930619A1 (en) Pulse length discriminator
GB2171544A (en) Switch reading circuit

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): JP

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU MC NL SE

AK Designated states

Kind code of ref document: A3

Designated state(s): JP

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU MC NL SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 1992917436

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1992917436

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 1992917436

Country of ref document: EP