EP4341756A1 - Computerimplementiertes verfahren und system zur bestimmung von optimierten systemparametern eines technischen systems mittels einer kostenfunktion - Google Patents
Computerimplementiertes verfahren und system zur bestimmung von optimierten systemparametern eines technischen systems mittels einer kostenfunktionInfo
- Publication number
- EP4341756A1 EP4341756A1 EP22732889.5A EP22732889A EP4341756A1 EP 4341756 A1 EP4341756 A1 EP 4341756A1 EP 22732889 A EP22732889 A EP 22732889A EP 4341756 A1 EP4341756 A1 EP 4341756A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cost function
- system parameters
- parameters
- rules
- probability
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- 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
- G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
- G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
- G05B13/04—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
- G05B13/042—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators in which a parameter or coefficient is automatically adjusted to optimise the performance
-
- 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
- G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
- G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
- G05B13/0205—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric not using a model or a simulator of the controlled system
- G05B13/024—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric not using a model or a simulator of the controlled system in which a parameter or coefficient is automatically adjusted to optimise the performance
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/17—Function evaluation by approximation methods, e.g. inter- or extrapolation, smoothing, least mean square method
Definitions
- the invention relates to a computer-implemented method for determining a cost function, with the cost function being provided for determining optimized system parameters of a technical system, with the technical system having various components that can be set by the system parameters, and with the technical system providing various output values for when the system parameters are set the various components created. Ultimately, optimized system parameters of the technical system are determined using the cost function.
- the invention also relates to a computer system.
- Approximation methods or algorithms can be used to determine suitable parameters.
- Such problems are regarded as an optimization problem, in which the parameters represent free variables and a so-called cost function, which represents an evaluation function, is to be optimized.
- This cost function describes the quality of the selected parameters and is evaluated by testing the effect of the parameters using the system.
- there is also no cost function since the physical system supplies several output values and the output values are not directly identified as costs (or benefits) can be interpreted. Ie the expected quality is not directly one of the (numerical) output values.
- the output of the system then forms the input of the cost function, with the cost function being determined implicitly by the system or by experts. This means that the system has output values that can be used to show the quality of the system. For example, it is known which output values are to be considered good and a corresponding function can thus be defined.
- system parameters usually have to be determined individually for each parameterization problem using experts and expert knowledge, with a change in the model or minor changes in the technical system necessitating complex redeterminations.
- cost functions determined by experts require a clear, reliable definition that enables automatic evaluation. This is normally not possible due to only abstract expert knowledge.
- determining a cost function is an iterative process in which the expert looks at the optimized system parameters to further adjust the cost function until the result meets his expectations.
- this is costly and time-consuming.
- WO 2001 061 573 A2 discloses a method for calculating a model of a technical system which has a function structure with functions and at least one undetermined parameter, with the steps: querying the function structure of the model; querying a data file; creating an optimization environment for computing the parameters of the model; generate from Start values for the at least one undetermined parameter from the function structure; Calculate and output the parameters.
- the object is achieved by a computer-implemented method having the features of claim 1 and a computer system having the features of claim 8.
- the object is achieved by a computer-implemented method for determining optimized system parameters of a technical system using a cost function, with the cost function being provided for determining optimized system parameters of the technical system, with the technical system having various components that can be set by the system parameters, and with Setting the system parameters, the technical system generates different output values for the different components, comprising the steps:
- the computer-implemented method is not based on a predefined cost function, but on a variety of rules that the cost function is intended to obey and a direct use of historical system parameters and output values.
- the technical system is based on these rules.
- Such rules may be based on experience, the various historical system parameters, and operationally underpin the system. With the help of the rules, an expert's expectations of the behavior of the technical system can be defined.
- the rules can specify limit values for the machine parameters/machine settings that the machine/the technical system should comply with when it is set (operated) (e.g. as minimum and maximum system parameters to prevent overloading or malfunctions) or output values that the technical system should comply with the various modes of operation.
- the individual can also rules are interdependent.
- the rules can be specified, for example, in a preferred representation form, ordinal and/or numeric representation form depending on the system parameters.
- a function space is a set of functions that all have the same domain. Usually this is infinite dimensional.
- the rules determined above are translated as probability functions, which are based on historical system parameters and output values and determine the observed probability with which the rules are satisfied by any cost function from the function space.
- the rules can preferably, but not necessarily, always be translated as a pairwise probability function. This means that the existing rules are translated into pairwise probability functions. Here, pairs of historical examples are formed for which the rule applies.
- the probability can be designed as a sigmoid function, for example.
- the probability function p sigmoid(x — y)
- the cost function results from the resulting certain probability functions.
- the cost function is now optimized using an optimization method, for example one that supports multi-modal solution spaces, whereby that function is determined from the function space that maximizes the overall probability of all rules or the probability that all rules are observed. Historical output values are used to evaluate the cost function in order to compare the resulting quality of the cost function with expert opinion.
- the computer-implemented process allows system parameters to be determined without human trial and error, which ensure a high level of quality.
- the computer-implemented method allows expert knowledge to be reproduced in a comprehensible notation.
- the computer-implemented method makes it easy to take account of changes in the requirements and any correlation effects that may arise as a result. Manual consideration by an expert of the changes and their correlation effects is not necessary.
- Output values/system parameters are used for determination. Furthermore, the quality of the system parameters can be explicitly determined and justified by the computer-implemented method.
- the technical system it is possible for the technical system to be mapped or simulated virtually as a simulation. This enables a simpler determination and, above all, validation of the optimized system parameters than when using the real technical system to validate determined optimized system parameters.
- a probability function is generated based on a rule in each case.
- the rules are preferably different dependent or build on each other.
- the rules can also be specified, for example, by customer requests or boundary conditions.
- the technical system is a physical system in which the system behavior (or components of the technical system) can be changed by freely adjustable parameters (control variables).
- control variables control variables
- certain manipulated variables of the components of the technical system
- mechanically, electrically or digitally which changes the measurable properties of the system. This raises the problem of the optimal manipulated variables in relation to the measurable properties.
- the physical system it is possible for the physical system to be mapped virtually as a simulation, which simplifies changing the manipulated variables and measuring the properties.
- An embodiment relates to the determination of optimal parameters for the operation of a control unit (an ECU, electronic control unit), for example in a vehicle.
- a control unit an ECU, electronic control unit
- the functional space is modeled using an expert system.
- the mostly infinite dimensional functional space can be restricted.
- the expert system can independently restrict or reduce the functional space based on acquired expert knowledge.
- the function space is represented by a machine learning model.
- the functional space can also be reduced.
- the usual functions in machine learning such as kernel functions or neural networks, can be used here.
- the provided rules are weighted.
- the more important rules are weighted higher than the less important rules.
- the rules can be determined using an expert system. This can be done automatically, for example.
- the individual output values can also be weighted.
- the object is also achieved by a computer system that is set up to determine optimized system parameters of a technical system using a cost function.
- the cost function is intended to determine optimized system parameters of the technical system.
- the technical system has various components that can be adjusted by the system parameters, and when the system parameters are adjusted, the technical system generates different output values for the various components.
- the computer system has a storage unit with historical system parameters and corresponding historical output values for the individual components.
- a number of rules on which the technical system is based are stored in the storage unit and are based on the various system parameters.
- the computer system has a processor which is designed to determine a function space.
- the function space corresponds to a set of functions in which the cost function lies.
- the processor is designed to generate a plurality of probability functions based on the historical system parameters and corresponding output values using one or more rules. Each of the probability functions indicates the probability with which the underlying rule is fulfilled by any cost function from the function space.
- the computer system also has an optimization unit, the optimization unit being designed to combine all probability functions in order to determine the cost function by maximization the total probability of all rules.
- the optimization unit is further designed to optimize the system parameters given the cost function.
- the computer system has an output unit which is designed to set the components of the technical system for the optimized system parameters.
- an expert system is provided, with the functional space being able to be modeled with the aid of the expert system.
- a machine learning method is provided, with the machine learning method being designed to model the functional space.
- an expert system can be provided, which is designed to determine/model the rules.
- FIG. 2 shows the method schematically using a locking system.
- the cost function is intended to determine optimized system parameters of a technical system.
- the technical system has various components that can be set using the system parameters. When setting the system parameters, the technical system generates different output values for the different components.
- parameterization problems are problems in which a technical system has system parameters that can be chosen freely and that influence the system behavior, with the system behavior being subject to an evaluation.
- the system parameters represent free variables that are optimized using a cost function (evaluation function). This cost function describes the quality of the system and is evaluated by testing the effect of the system parameters on the system. The output of the system then forms the input of the cost function.
- An environment for such parameterization problems are, for example, automatic locking systems for tailgates, (sliding) doors, windows or sunroofs, drive units and injection systems, transmission systems, exhaust gas regulation systems, manufacturing and production processes, printed circuit boards, temperature protection systems, etc.
- a first step S1 historical system parameters and the historical output values corresponding thereto are generated and evaluated for the individual components. These can, for example, have been approved by an expert.
- a set of rules which is based on the various system parameters and historical system parameters, is determined. This can be based on experience, customer requests or simply reflect system limits or good operating conditions.
- Examples of such rules are: - the output values of an analysis A or a test A are better than the output values of an analysis B or test B,
- the rules may be defined in ordinal notation and/or nominal notation and/or as preferences.
- a function space is determined, the function space corresponding to a set of functions in which the desired cost function lies.
- the functional space is usually infinitely dimensional.
- functions that are common in machine learning such as kernel functions or artificial neural networks, can be used with which the function space can be modeled.
- An expert system can also be provided, in which case the function space can be represented using the expert system.
- a plurality of paired probability functions based on the historical output values are generated using two rules, each of the paired probability functions indicating the probability with which the rules are fulfilled. This means that the existing rules are translated into pairwise probability functions.
- pairs of historical examples are formed for which the rule applies.
- a fifth step S5 all probability functions are combined to determine the cost function by maximizing the overall probability of all rules. Then the system parameters are optimized given the cost function.
- step S6 the optimized system parameters obtained from step S5 are output for setting the components of the technical system.
- FIG. 2 describes the computer-implemented method using the example of a locking system for vehicles.
- parameterizable systems are responsible for detecting whether an object/person is trapped and the closing process must therefore be interrupted.
- these locking systems not only affect the detection of jamming, but also the locking behavior itself.
- the locking behavior can be subject to explicit requirements of the vehicle manufacturer.
- a first step A1 historical system parameters and the corresponding historical output values for the individual components are generated and evaluated. These system parameters can be evaluated using an expert, for example.
- a set of rules is created. This can be based on preferences, ordinal ratings and numerical ratings of the historical and non-historical system parameters. Furthermore, empirical values or operating parameters (from the manufacturer) or customer requests can be formulated as a rule. Such are for example:
- the maximum closing force must have a certain value and should be minimized
- rule 1 is rated higher than all others.
- a function space of the cost function is determined. This is an infinite set of functions, determined by their function parameters.
- one of the rules here is that the maximum closing force must always be above a certain value. Therefore, this part of the cost function can be determined using a limit function G Y , but it is not yet determined how quickly the costs will increase if the limit is exceeded.
- Rules 1 to 3 are translated into pairwise probability functions.
- pairs of historical examples are formed for which the rule applies.
- the probability can be defined as the sigmoid function of the cost difference.
- a sigmoid function is a mathematical function with an S-shaped graph.
- the probability functions indicate the correctness of the set of rules in relation to the system parameters of the cost function.
- the final probability function is determined. This is the product of all probability functions derived from the rules.
- the result of the fifth step A5 is now a function that defines the probability of the correctness of the cost function as a function of the free parameters g,b, a 1 , a 2 , s.
- a sixth step A6 the cost function is optimized.
- Multi-modal optimization methods can be used for this, which determine these system parameters in such a way that the probability is maximized and thus the cost function is fully defined. Examples of this can be the Hamiltonian Monte Carlo method (hybrid Monte Carlo algorithm) or the maximum likelihood estimation method.
- Markov chains can also be used.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Software Systems (AREA)
- Data Mining & Analysis (AREA)
- Mathematical Analysis (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Mathematical Optimization (AREA)
- Computational Mathematics (AREA)
- Automation & Control Theory (AREA)
- Medical Informatics (AREA)
- Artificial Intelligence (AREA)
- Health & Medical Sciences (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Evolutionary Computation (AREA)
- Algebra (AREA)
- Databases & Information Systems (AREA)
- General Engineering & Computer Science (AREA)
- Feedback Control In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021205098.0A DE102021205098A1 (de) | 2021-05-19 | 2021-05-19 | Computerimplementiertes Verfahren und System zur Bestimmung einer Kostenfunktion |
| PCT/DE2022/200102 WO2022242813A1 (de) | 2021-05-19 | 2022-05-19 | Computerimplementiertes verfahren und system zur bestimmung von optimierten systemparametern eines technischen systems mittels einer kostenfunktion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4341756A1 true EP4341756A1 (de) | 2024-03-27 |
Family
ID=82163313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22732889.5A Pending EP4341756A1 (de) | 2021-05-19 | 2022-05-19 | Computerimplementiertes verfahren und system zur bestimmung von optimierten systemparametern eines technischen systems mittels einer kostenfunktion |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20240241482A1 (de) |
| EP (1) | EP4341756A1 (de) |
| CN (1) | CN117396815A (de) |
| DE (2) | DE102021205098A1 (de) |
| WO (1) | WO2022242813A1 (de) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001061573A2 (de) | 2000-02-16 | 2001-08-23 | Siemens Aktiengesellschaft | Verfahren und vorrichtung zum berechnen eines modells eines technischen systems |
| DE102006059829A1 (de) | 2006-12-15 | 2008-06-19 | Slawomir Suchy | Universalcomputer |
| US9568915B1 (en) * | 2016-02-11 | 2017-02-14 | Mitsubishi Electric Research Laboratories, Inc. | System and method for controlling autonomous or semi-autonomous vehicle |
| DE112017002604T5 (de) * | 2016-06-21 | 2019-02-21 | Sri International | Systeme und Verfahren für das maschinelle Lernen unter Verwendung eines vertrauenswürdigen Modells |
| US10416619B2 (en) * | 2016-07-25 | 2019-09-17 | General Electric Company | System modeling, control and optimization |
| DE102017211209A1 (de) * | 2017-06-30 | 2019-01-03 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Einstellen mindestens eines Parameters eines Aktorregelungssystems, Aktorregelungssystem und Datensatz |
| US20200006946A1 (en) * | 2018-07-02 | 2020-01-02 | Demand Energy Networks, Inc. | Random variable generation for stochastic economic optimization of electrical systems, and related systems, apparatuses, and methods |
| DE102018220505A1 (de) * | 2018-11-28 | 2020-05-28 | Robert Bosch Gmbh | Modellprädiktive Regelung mit verbesserter Berücksichtigung von Beschränkungen |
| AT521927B1 (de) * | 2018-12-10 | 2020-10-15 | Avl List Gmbh | Verfahren zur Kalibirierung eines technischen Systems |
-
2021
- 2021-05-19 DE DE102021205098.0A patent/DE102021205098A1/de not_active Withdrawn
-
2022
- 2022-05-19 US US18/562,290 patent/US20240241482A1/en active Pending
- 2022-05-19 EP EP22732889.5A patent/EP4341756A1/de active Pending
- 2022-05-19 DE DE112022002664.2T patent/DE112022002664A5/de active Pending
- 2022-05-19 WO PCT/DE2022/200102 patent/WO2022242813A1/de not_active Ceased
- 2022-05-19 CN CN202280036066.9A patent/CN117396815A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102021205098A1 (de) | 2022-11-24 |
| WO2022242813A1 (de) | 2022-11-24 |
| US20240241482A1 (en) | 2024-07-18 |
| CN117396815A (zh) | 2024-01-12 |
| DE112022002664A5 (de) | 2024-02-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE112022000106T5 (de) | Verfahren zur Getriebefehlerdiagnose und Signalerfassung, eine Vorrichtung und ein elektronisches Gerät | |
| DE10297009B4 (de) | Sensorfusion unter Verwendung von selbstvaluierenden Prozesssensoren | |
| EP2425308B1 (de) | Einrichtung und verfahren zur residuenauswertung eines residuums zur erkennung von systemfehlern im systemverhalten eines systems eines flugzeugs | |
| DE102016109232A1 (de) | Stichprobenmessverfahren mit Stichprobenentnahmeratenentscheidungsschema und Computerprogrammprodukt hiervon | |
| WO2004090807A2 (de) | Verfahren zum trainieren von neuronalen netzen | |
| WO2020160761A1 (de) | Verfahren und prüfvorrichtung | |
| DE112020003050T5 (de) | Fehlerkompensation in analogen neuronalen netzen | |
| DE102011102274A1 (de) | Verfahren zum Betreiben eines Sicherheitssteuergeräts | |
| DE102011081346A1 (de) | Verfahren zum Erstellen einer Funktion für ein Steuergerät | |
| EP3627262A1 (de) | Verfahren und assistenzsystem zur parametrisierung eines anomalieerkennungsverfahrens | |
| DE102016216945A1 (de) | Verfahren und Vorrichtung zum Ausführen einer Funktion basierend auf einem Modellwert eines datenbasierten Funktionsmodells basierend auf einer Modellgültigkeitsangabe | |
| EP2433185B1 (de) | Vorrichtung und verfahren zum bearbeiten einer prozesssimulationsdatenbasis eines prozesses | |
| EP3796117B1 (de) | Diagnoseverfahren und diagnosesystem für eine verfahrenstechnische anlage | |
| WO2021089591A1 (de) | Verfahren zum trainieren eines künstlichen neuronalen netzes, computerprogramm, speichermedium, vorrichtung, künstliches neuronales netz und anwendung des künstlichen neuronalen netzes | |
| DE102022209080A1 (de) | Verfahren zum Kalibrieren eines Sensors, Recheneinheit und Sensorsystem | |
| DE102016124205A1 (de) | Computer-implementiertes Verfahren zur Optimierung eines Herstellungsprozesses | |
| EP4341756A1 (de) | Computerimplementiertes verfahren und system zur bestimmung von optimierten systemparametern eines technischen systems mittels einer kostenfunktion | |
| DE10015286A1 (de) | System, Verfahren und Produkt mit Computerbefehlssatz zum automatischen Abschätzen experimenteller Ergebnisse | |
| DE102009018785A1 (de) | Verfahren und Vorrichtungen für eine virtuelle Testzelle | |
| DE102021207094A1 (de) | Computerimplementiertes Verfahren, Computerprogramm und Vorrichtung zum Erzeugen einer daten-basierten Modellkopie in einem Sensor | |
| DE102021205097A1 (de) | Computerimplementiertes Verfahren und System zur Bestimmung einer Kostenfunktion | |
| DE102019214546A1 (de) | Computerimplementiertes Verfahren und Vorrichtung zur Optimierung einer Architektur eines künstlichen neuronalen Netzwerks | |
| WO2023209029A1 (de) | Computer-implementiertes verfahren und system für den betrieb eines technischen geräts mit einem modell auf basis föderierten lernens | |
| DE102013206274A1 (de) | Verfahren und Vorrichtung zum Anpassen eines nicht parametrischen Funktionsmodells | |
| DE102016113310A1 (de) | Verfahren zur Bewertung von Aussagen einer Mehrzahl von Quellen zu einer Mehrzahl von Fakten |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20231219 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: CONTINENTAL AUTOMOTIVE TECHNOLOGIES GMBH |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: AUMOVIO GERMANY GMBH |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |