US3876871A
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Self-adapting control element
Assignee: Cegelec SA
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Filing: 1973-10-01
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Granted: 1975-04-08
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Expires: 1993-10-01
Abstract
Abstract Self-adapting control element which effects the controlling, in a closed p, of processes having parameters which vary in a way which cannot be foreseen or measured, while maintaining unvarying performances, characterized in that it comprises a determining of the coefficients of the regulator (R) by a calculator (c) receiving a data item (5) concerning the required performances and the parameters (4) of an adjustable model and a determining, by that adjustable model, of the variables of state (7) entering the regulator (R).
Inventors
- 👤 Edouard Sinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:07
CPC Classifications
G; G05; G05B; G05B13/00; G05B13/02; G05B13/04; G05B13/042; G05B13/044
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
153 words
Self-adapting control element for processes whose parameters are unknown or variable, comprising regulator means for regulating the variables of states of a process having adjustable coefficients, which receives a signal input value corresponding to variables representative of the state of the process and supplies a control signal for controlling the process; first subassembly means responsive to the input and output of the process for the identification of the parameters thereof and for detecting the variations in the states of the process, said first sub-assembly means being constituted by a model having adjustable parameters, placed in parallel with the process, and by adapting means for modifying the parameters of the model until the difference between the outputs of process and of the model is a minimum; and second sub-assembly means for controlling the coefficients of the regulator in accordance with the parameters of the model and data on the required performance of the process.
Claim 2
Dependent Claim
153 words
Self-adapting control element for processes whose parameters are unknown or variable, comprising regulator means for regulating the variables of states of a process having adjustable coefficients, which receives a signal input value corresponding to variables representative of the state of the process and supplies a control signal for controlling the process; first subassembly means responsive to the input and output of the process for the identification of the parameters thereof and for detecting the variations in the states of the process, said first sub-assembly means being constituted by a model having adjustable parameters, placed in parallel with the process, and by adapting means for modifying the parameters of the model until the difference between the outputs of process and of the model is a minimum; and second sub-assembly means for controlling the coefficients of the regulator in accordance with the parameters of the model and data on the required performance of the process.
Claim 3
Dependent Claim
116 words
Self-adapting control element according to claim 1, wherein said adjustable model is of the first order, characterized in that said regulator means comprises a subtractor receiving, on a positive input, an input signal for control of the porcess and, on respective negative inputs, a signal from the output of the process and a variable signal coming from said model, a multiplier connected to the output of said subtractor and to an integrator having a constant of integration which may be controlled, receiving the output of the subtractor and supplying said control signal to the process, the multiplication coefficient of said multiplier and the constant of integration of said integration being controlled from said second subassembly means.
Claim 4
Dependent Claim
116 words
Self-adapting control element according to claim 2, in which the adjustable model consists of a first multiplier providing a first parameter followed by a negative reaction chain constituted by a second multiplier providing a second parameter connected to an integrator, characterized in that said adapting means comprises first means for multiplying by a constant of the product of the signal representing the difference between the output of the model and the output of the process, by the input signal in the model, and a first integrator whose input is connected to the output of the said first means and whose output is connected to the first multiplier of the model to insert therein the first parameter.
Claim 5
Dependent Claim
91 words
Self-adapting control element according to claim 3, characterized in that said adapting means further comprises second means for multiplying by a constant of the product of the signal representing the difference between the output of the model and the output of the process, by the signal sampled at the input of the second multiplier of the model, and a second integrator whose input is connected to the output of the said second device and whose output is connected to the second multiplier of the model to insert the second parameter therein.
Claim 6
Dependent Claim
66 words
Self-adapting control element according to claim 3, characterized in that said second sub-assembly means comprises a second multiplier receiving first and second parameter signals and being connected to an element which affects the output of said second multiplier with a coefficient given by the data on the required performance and from whose output the constant of integration of the multiplier in the adjustable model is obtained.
Claim 7
Dependent Claim
55 words
Self-adapting control element according to claim 5, characterized in that the second sub-assembly means further comprises a subtractor at whose output the coefficient of the multiplier in said model is obtained and at whose input signal is received representing a constant given by the data on the performance required along with a second parameter signal.
Claim 8
Dependent Claim
143 words
Self-adapting control element according to claim 1, in which the adjustable model is of the first order having a pure delay, characterized in that said regulator means comprises a subtractor receiving an input signal on a positive input, and the delayed output of the model on one negative input, a measurement signal which is the output of the process and a variable signal corresponding to the state of the model being applied to a second negative input via a multiplier, a non-delayed output of the model being applied to a third negative input of said subtractor, and an integrator having a constant of integration which may be controlled receiving the output of the subtractor and supplying said control signal to said process, the coefficient of multiplication of the multiplier and the constant of integration of the integrator being derived from said second sub-assembly.
Claim 9
Dependent Claim
57 words
Self-adapting control element according to claim 7, characterized in that the model having adjustable parameters consists of a first multiplier providing a first parameter connected to a negative reaction chain constituted by a second multiplier providing a second parameter and by an integrator, that chain itself being connected in series with an element having a pure delay.
Claim 10
Dependent Claim
98 words
Self-adapting control element according to claim 8, characterized in that said adapting means comprises first means for multiplying by a constant of the product of the signal representing the difference between the output of the model and the output of the process, by the non-delayed output signal of the model, it being possible to replace one or both of these two signals by its symbol, and an integrator whose input is connected to the output of the said first means and whose output is connected to the first multiplier of the model to insert therein the first parameter.
Claim 11
Dependent Claim
107 words
Self-adapting control element according to claim 9, characterized in that said adapting means comprises second means for multiplying by a constant of the product of the signal representing the difference between the output of the model and the output of the process by a signal which is the approximate derivative of the delayed output of the model, it being possible for one or both of these two signals to be replaced by its symbol, and an integrator whose input is connected to the output of the said second means and whose output is connected to the second multiplier of the model to insert therein the second parameter.
Claim 12
Dependent Claim
63 words
Self-adapting control element according to claim 10, characterized in that said second sub-assembly means comprises a multiplier receiving the first and second parameters connected to an element which controls the output of that multiplier in accordance with a coefficient given by the data on the required performance and at whose output the constant of integration of the integrator of said model is obtained.
Claim 13
Dependent Claim
51 words
Self-adapting control element according to claim 11, characterized in that said second sub-assembly means further comprises a subtractor at whose output the coefficient of the multiplier of said model is obtained and at whose input a constant given by the data on the required performance and the second parameter are received.
Claim 14
Dependent Claim
123 words
Self-adapting control element according to claim 1, in which the adjustable model is of the second order, characterized in that said regulator means comprises a subtractor receiving, on a positive input, an input signal and, on respective negative inputs, a measurement which is the output of the process, a first variable coming from the mode, affected by a first coefficient in a multiplier and a second variable coming from the model affected by a second coefficient in a multiplier and an integrator having a constant of integration which may be controlled, receiving the output of the subtractor and providing said control signal and in that said first and second multiplication coefficients and said constant of integration are derived from said second sub-assembly means.
Claim 15
Dependent Claim
72 words
Self-adapting control element according to claim 13, characterized in that the model having adjustable parameters consists of a first multiplier providing a first parameter followed, in series, by a first negative reaction chain constituted by means for bringing in a second parameter in the form of a coefficient and by an integrator, and by a second negative reaction chain constituted by a second multiplier providing a third parameter and by an integrator.
Claim 16
Dependent Claim
99 words
Self-adapting control element according to claim 14, characterized in that said adapting means comprises first means for multiplying by a constant of the product of the signal showing the difference between the output of the model and the output of the process, by the input signal in the model, it being possible for one or both of these two signals to be replaced by its symbol, and an integrator whose input is connected to the output of the said first means and whose output is connected to the first multiplier of the model to insert therein the first parameter.
Claim 17
Dependent Claim
104 words
Self-adapting control element according to claim 15, characterized in that said adapting means comprises second means for multiplying by a constant of the product of the signal showing the difference between the output of the model and the output of the process by the signal sampled at the input of the second multiplier of the model, it being possible to replace one or both of these two signals by its symbol, and an integrator whose input is connected to the output of the said second means and whose output is connected to the second multiplier of the model to insert therein the third parameter.
Claim 18
Dependent Claim
87 words
Self-adapting control element according to claim 16, characterized in that said second sub-assembly means comprises two multipliers in series, the first of these multipliers receiving the first and third parameters and the second of these multipliers receiving, besides the output of said first multiplier, the second parameter and having its output connected to an element which controls it in accordance with a coefficient given by the data on the required performances and at whose output the constant of integration of the integrator in said model is obtained.
Claim 19
Dependent Claim
88 words
Self-adapting control element according to claim 16, characterized in that said second sub-assembly means comprises a subtractor, at whose output first coefficient of the multiplier in said model is obtained, at positive inputs of which a constant given by the data on the required performance and the third parameter raised to the square and controlled by a coefficient given by the data on the required performance arrive and at whose negative input the third parameter controlled by a coefficient given by the data on the required performance arrives.
Claim 20
Dependent Claim
73 words
Self-adapting control element according to claim 16, characterized in that said second sub-assembly means comprises a multiplier at whose output the second coefficient of the multiplier in said model is obtained and which receives at the input the third parameter and the output of a subtractor receiving, at the input, a constant corresponding to the data on the required performances and a signal which is the sum of the second and third parameters.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |