US4348632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servosystem operating about noise component error signal
Assignee: International Business Machines Corp
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Filing: 1980-09-15
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Granted: 1982-09-07
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Expires: 2000-09-15
Abstract
Abstract The control of the operation of an electric circuit element, such as an electrochemical cell, is performed by positive feedback servocircuitry developing an error signal or inherent noise component, and having algebraic computing capability for developing the compensating control. Current follower circuitry is arranged for developing a potential proportional to the current drawn by the electric circuit element to be controlled. A portion of this potential is algebraically combined with the externally applied operating electric wave. The inherent noise component of the control circuitry is sensed by a high pass filter and an ac-dc converting circuit and thereafter integrated for generating a slowly varying potential for determining the portion of the potential derived by sensing the current. The two potentials are applied to a conventional multiplying circuit and the product potential combined with the operating wave.
Inventors
- 👤 Ronald K. Galwey
- 👤 Kay K. Kanazawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:24
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/48
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
256 words
A closed loop servocircuit arrangement for controlling the operation of an electric circuit element having at least two terminals, comprising circuitry for controlling and applying operating energy across said electric circuit element for passing electric current therethrough, which electric current includes an inherent electric noise current component which also manifests an electric noise potential, servocircuitry having input terminals coupled to points on said circuitry at which said noise current component and said noise potential components are manifested and having an output terminal at which a processed error signal is presented and combined with said operating energy for controlling the flow of electric current through said electric circuit element, said servocircuitry comprising an inverting summing circuit having balanced input terminals and having an output terminal, a control amplifying circuit having an input terminal connected to said output terminal of said summing circuit, and having an output terminal connected to one terminal of said electric circuit element, a current following circuit having an input terminal connected to the other terminal of said electric circuit element and having an output terminal, a converting circuit having an input circuit connected to said output terminal of said control amplifying circuit and having an output terminal, an integrating circuit having an input terminal connected to said converting circuit and having an output terminal, and a multiplying circuit having input terminals individually connected to said output terminals of said current following circuit and said integrating circuit and having a product output terminal connected to one of said input terminals of said summing circuit.
Claim 2
Dependent Claim
256 words
A closed loop servocircuit arrangement for controlling the operation of an electric circuit element having at least two terminals, comprising circuitry for controlling and applying operating energy across said electric circuit element for passing electric current therethrough, which electric current includes an inherent electric noise current component which also manifests an electric noise potential, servocircuitry having input terminals coupled to points on said circuitry at which said noise current component and said noise potential components are manifested and having an output terminal at which a processed error signal is presented and combined with said operating energy for controlling the flow of electric current through said electric circuit element, said servocircuitry comprising an inverting summing circuit having balanced input terminals and having an output terminal, a control amplifying circuit having an input terminal connected to said output terminal of said summing circuit, and having an output terminal connected to one terminal of said electric circuit element, a current following circuit having an input terminal connected to the other terminal of said electric circuit element and having an output terminal, a converting circuit having an input circuit connected to said output terminal of said control amplifying circuit and having an output terminal, an integrating circuit having an input terminal connected to said converting circuit and having an output terminal, and a multiplying circuit having input terminals individually connected to said output terminals of said current following circuit and said integrating circuit and having a product output terminal connected to one of said input terminals of said summing circuit.
Claim 3
Dependent Claim
267 words
A closed loop servocircuit arrangement for controlling the operation of an electrochemical cell having a working electrode, a counter electrode and a reference electrode, comprising circuitry for controlling and applying operating energy across said electrochemical cell for passing electric current therethrough, which electric current includes an inherent electric noise current component which also manifests an electric noise potential, servocircuitry having input terminals coupled to points on said circuitry at which said noise current component and said noise potential components are manifested and having an output terminal at which a processed error signal is presented and combined with said operating energy for controlling the flow of electric current through said electrochemical cell, said servocircuitry comprising an inverting summing circuit having balanced input terminals and having an output terminal, a control amplifying circuit having one input terminal connected to said output terminal of said summing circuit, having another input terminal connected to said reference electrode, and having an output terminal connected to said counter electrode of said electrochemical cell, a current following circuit having an input terminal connected to said working electrode of said electrochemical cell and having an output terminal, a converting circuit having an input circuit connected to said output terminal of said control amplifying circuit and having an output terminal, an integrating circuit having an input terminal connected to said converting circuit and having an output terminal, and a multiplying circuit having input terminals individually connected to said output terminals of said current following circuit and said integrating circuit and having a product output terminal connected to one of said input terminals of said summing circuit.
Claim 4
Dependent Claim
267 words
A closed loop servocircuit arrangement for controlling the operation of an electrochemical cell having a working electrode, a counter electrode and a reference electrode, comprising circuitry for controlling and applying operating energy across said electrochemical cell for passing electric current therethrough, which electric current includes an inherent electric noise current component which also manifests an electric noise potential, servocircuitry having input terminals coupled to points on said circuitry at which said noise current component and said noise potential components are manifested and having an output terminal at which a processed error signal is presented and combined with said operating energy for controlling the flow of electric current through said electrochemical cell, said servocircuitry comprising an inverting summing circuit having balanced input terminals and having an output terminal, a control amplifying circuit having one input terminal connected to said output terminal of said summing circuit, having another input terminal connected to said reference electrode, and having an output terminal connected to said counter electrode of said electrochemical cell, a current following circuit having an input terminal connected to said working electrode of said electrochemical cell and having an output terminal, a converting circuit having an input circuit connected to said output terminal of said control amplifying circuit and having an output terminal, an integrating circuit having an input terminal connected to said converting circuit and having an output terminal, and a multiplying circuit having input terminals individually connected to said output terminals of said current following circuit and said integrating circuit and having a product output terminal connected to one of said input terminals of said summing circuit.
Claim 5
Dependent Claim
171 words
A closed loop servocircuit arrangement for controlling the operation of an electric circuit element having at least two terminals, comprising a summing circuit having balanced input terminals and having an output terminal connected to one terminal of said electric circuit element, a current following circuit having an input terminal connected to the other terminal of said electric circuit element and having an output terminal, a converting circuit having an input terminal connected to said output terminal of said summing circuit and having an output terminal, an integrating circuit having an input terminal connected to said converting circuit and having an output terminal, a multiplying circuit having input terminals individually connected to said output terminals of said following circuit and said integrating circuit and having a product output terminal connected to one of said input terminals of said summing circuit for correcting for varying resistance between said terminals of said circuit in operation, and input terminals connected across said balanced input terminals of said summing circuit for operating said electric circuit element.
Claim 6
Dependent Claim
171 words
A closed loop servocircuit arrangement for controlling the operation of an electric circuit element having at least two terminals, comprising a summing circuit having balanced input terminals and having an output terminal connected to one terminal of said electric circuit element, a current following circuit having an input terminal connected to the other terminal of said electric circuit element and having an output terminal, a converting circuit having an input terminal connected to said output terminal of said summing circuit and having an output terminal, an integrating circuit having an input terminal connected to said converting circuit and having an output terminal, a multiplying circuit having input terminals individually connected to said output terminals of said following circuit and said integrating circuit and having a product output terminal connected to one of said input terminals of said summing circuit for correcting for varying resistance between said terminals of said circuit in operation, and input terminals connected across said balanced input terminals of said summing circuit for operating said electric circuit element.
Claim 7
Dependent Claim
39 words
A closed loop servocircuit arrangement as defined in claim 3, and incorporating a circuit component interposed in circuit between said output terminal of said summing circuit and said input terminal of said converting circuit for blocking direct current flow.
Claim 8
Dependent Claim
18 words
A closed loop servocircuit arrangement as defined in claim 4, and wherein said circuit component is a capacitor.
Claim 9
Dependent Claim
19 words
a closed loop servocircuit arrangement as defined in claim 4, and wherein said circuit component is a highpass filter.
Claim 10
Dependent Claim
30 words
A closed loop servocircuit arrangement as defined in claim 6, and wherein said filter circuit comprises a series capacitor coacting with a high impedance input circuit of said converting circuit.
Claim 11
Dependent Claim
25 words
A closed loop servocircuit arrangement as defined in claim 3, and wherein said summing circuit comprises potential adding circuit component and an operational amplifying circuit.
Claim 12
Dependent Claim
195 words
A closed loop servocircuit arrangement for controlling the operation of an electric circuit element having at least two terminals, comprising an inverting summing circuit having balanced input terminals and having an output terminal, a control amplifying circuit having an input terminal connected to said output terminal of said summing circuit, and having an output terminal connected to one terminal of said electric circuit element, a current following circuit having an input terminal connected to the other terminal of said electric circuit element and having an output terminal, a converting circuit having an input circuit connected to said output terminal of said control amplifying circuit and having an output terminal, an integrating circuit having an input terminal connected to said converting circuit and having an output terminal, a multiplying circuit having input terminals individually connected to said output terminals of said following circuit and said integrating circuit and having a product output terminal connected to one of said input terminals of said summing circuit for correcting for varying resistance between said terminals of said circuit in operation, and input terminals connected across said balanced input terminals of said summing circuit for operating said electric circuit element.
Claim 13
Dependent Claim
195 words
A closed loop servocircuit arrangement for controlling the operation of an electric circuit element having at least two terminals, comprising an inverting summing circuit having balanced input terminals and having an output terminal, a control amplifying circuit having an input terminal connected to said output terminal of said summing circuit, and having an output terminal connected to one terminal of said electric circuit element, a current following circuit having an input terminal connected to the other terminal of said electric circuit element and having an output terminal, a converting circuit having an input circuit connected to said output terminal of said control amplifying circuit and having an output terminal, an integrating circuit having an input terminal connected to said converting circuit and having an output terminal, a multiplying circuit having input terminals individually connected to said output terminals of said following circuit and said integrating circuit and having a product output terminal connected to one of said input terminals of said summing circuit for correcting for varying resistance between said terminals of said circuit in operation, and input terminals connected across said balanced input terminals of said summing circuit for operating said electric circuit element.
Claim 14
Dependent Claim
203 words
A closed loop servocircuit arrangement for controlling the operation of an electrochemical cell having a working electrode, a counter electrode and a reference electrode, comprising an inverting summing circuit having balanced input terminals and having an output terminal, a control amplifying circuit having one input terminal connected to said output terminal of said summing circuit, having another input terminal connected to said reference electrode of said cell and having an output terminal connected to said counter electrode of said cell, a current following circuit having an input terminal connected to said working electrode of said cell and having an output terminal, a converting circuit having an input circuit connected to said output terminal of said control amplifying circuit and having an output terminal, an integrating circuit having an input terminal connected to said converting circuit and having an output terminal, a multiplying circuit having input terminals individually connected to said output terminals of said following circuit and said integrating circuit and having a product output terminal connected to one of said input terminals of said summing circuit for correcting for varying cell resistance in operation, and input terminals connected across said balanced input terminals of said summing circuit for operating said electrochemical cell.
Claim 15
Dependent Claim
203 words
A closed loop servocircuit arrangement for controlling the operation of an electrochemical cell having a working electrode, a counter electrode and a reference electrode, comprising an inverting summing circuit having balanced input terminals and having an output terminal, a control amplifying circuit having one input terminal connected to said output terminal of said summing circuit, having another input terminal connected to said reference electrode of said cell and having an output terminal connected to said counter electrode of said cell, a current following circuit having an input terminal connected to said working electrode of said cell and having an output terminal, a converting circuit having an input circuit connected to said output terminal of said control amplifying circuit and having an output terminal, an integrating circuit having an input terminal connected to said converting circuit and having an output terminal, a multiplying circuit having input terminals individually connected to said output terminals of said following circuit and said integrating circuit and having a product output terminal connected to one of said input terminals of said summing circuit for correcting for varying cell resistance in operation, and input terminals connected across said balanced input terminals of said summing circuit for operating said electrochemical cell.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-09-06 | 1986-03-08 | 1986-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-06 | 1990-03-08 | 1990-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-06 | 1994-03-08 | 1994-09-07 | $7700.00 | Window Closed / Lapsed |