EP4533193A1 - Überwachen einer mehrachsigen maschine mittels interpretierbarer zeitreihenklassifikation - Google Patents
Überwachen einer mehrachsigen maschine mittels interpretierbarer zeitreihenklassifikationInfo
- Publication number
- EP4533193A1 EP4533193A1 EP23726104.5A EP23726104A EP4533193A1 EP 4533193 A1 EP4533193 A1 EP 4533193A1 EP 23726104 A EP23726104 A EP 23726104A EP 4533193 A1 EP4533193 A1 EP 4533193A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- axis machine
- determining
- state
- time series
- value
- 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
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
- G05B23/0224—Process history based detection method, e.g. whereby history implies the availability of large amounts of data
- G05B23/024—Quantitative history assessment, e.g. mathematical relationships between available data; Functions therefor; Principal component analysis [PCA]; Partial least square [PLS]; Statistical classifiers, e.g. Bayesian networks, linear regression or correlation analysis; Neural networks
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
- G06F18/20—Analysing
- G06F18/24—Classification techniques
- G06F18/241—Classification techniques relating to the classification model, e.g. parametric or non-parametric approaches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Program-controlled manipulators
- B25J9/16—Program controls
- B25J9/1602—Program controls characterised by the control system, structure, architecture
- B25J9/161—Hardware, e.g. neural networks, fuzzy logic, interfaces, processor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Program-controlled manipulators
- B25J9/16—Program controls
- B25J9/1674—Program controls characterised by safety, monitoring, diagnostic
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
- G06F11/0706—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment
- G06F11/0736—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment in functional embedded systems, i.e. in a data processing system designed as a combination of hardware and software dedicated to performing a certain function
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
- G06F11/079—Root cause analysis, i.e. error or fault diagnosis
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N20/00—Machine learning
- G06N20/10—Machine learning using kernel methods, e.g. support vector machines [SVM]
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N3/00—Computing arrangements based on biological models
- G06N3/02—Neural networks
- G06N3/04—Architecture, e.g. interconnection topology
- G06N3/0464—Convolutional networks [CNN, ConvNet]
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N3/00—Computing arrangements based on biological models
- G06N3/02—Neural networks
- G06N3/08—Learning methods
- G06N3/09—Supervised learning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Program-controlled manipulators
- B25J9/16—Program controls
- B25J9/1628—Program controls characterised by the control loop
- B25J9/163—Program controls characterised by the control loop learning, adaptive, model based, rule based expert control
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N5/00—Computing arrangements using knowledge-based models
- G06N5/04—Inference or reasoning models
- G06N5/045—Explanation of inference; Explainable artificial intelligence [XAI]; Interpretable artificial intelligence
Definitions
- the object of the present invention is to improve a process, in particular a process of a multi-axis machine, and further in particular to reduce and/or avoid errors in the process, in particular error states in the multi-axis machine.
- determining the interpretable result further includes issuing a warning occurs when the classification value of the state in the process and/or the state of the multi-axis machine is or is assigned to a value of an error class which lies in a, in particular predetermined and/or learned, warning range or corresponds to a warning range and/or an all-clear is issued , if the classification value of the state in the process and / or the state of the multi-axis machine is or is assigned to a value that lies in an, in particular predetermined and / or learned, all-clear range or corresponds to an all-clear range.
- An “interpretable result” is preferably to be understood here as a result that can be read and understood by a user, in particular as a result that allows the user to draw direct conclusions about the (existing) channels, more particularly about a point in time and/or a period of time within the at least a channel and/or across all existing channels.
- a “result” is preferably to be understood here as a classification of the at least one data time series, in particular all existing data time series, in particular individually and/or as a whole.
- a “state of a multi-axis machine” is preferably defined herein as a predetermined parameter, in particular as a predetermined parameter that is of interest when operating a multi-axis machine, in particular with regard to possible sources of error, or as a state based on training (data) from Machine learning algorithm is classified as, in particular likely, critical for operating and/or continuing to operate the multi-axis machine and/or continuing the process and/or achieving goals with the process, in particular quality goals.
- a user can understand what contribution individual existing channels and times, in particular time intervals, have to the result or classification.
- the result can in particular increase the transparency of the algorithms used and also establish or increase the trust of users.
- the result can reveal potential for improvement, in particular for the process and/or the multi-axis machine.
- the method can create a particular possibility to check and/or improve black box algorithms (apart from their classification statistics).
- sumJ (wj x ) + B describes mathematically exactly what contribution the input makes to the classification value.
- Grad-CAM would therefore require a previously defined limit value for an automated checking of an activation score, which does not exist in particular in processes, in particular in multi-axis machines, particularly in robot processes, or at least it is not guaranteed that it exists. Therefore, Grad-CAM cannot provide a reliable basis for identifying important channels, as the scores can only be understood in relation to the other channels and to the data time series of the entire data set.
- the invention is further based in one embodiment on providing a machine learning algorithm, in particular a convolutional neural network, with K layers the data time series channels in the first k (with 1 ⁇ k ⁇ K) layers, in particular of the neural network, are evaluated separately and these results are then brought together in the layers k + 1 to K and evaluated together.
- a machine learning algorithm in particular a convolutional neural network
- the inputs xk in layer k can still be assigned to the individual channels and time intervals.
- the invention is based in one embodiment on the calculation of the contribution of a channel per data time series and a comparison of the contributions of the channels, in particular across the data set, and in particular with the help of probability distributions, further in particular in different Similar patterns may or may occur in channels that should be interpreted differently or evaluated differently using the method described here.
- determining an interpretable result further comprises determining a probability with which the state of the process and/or the state of the multi-axis machine corresponds to a value of an error class that lies in a warning range or corresponds to a warning range, in particular for the at least one channel and/or for a time interval of the process.
- the contributions bk_i are collected in layer k of the network and can still be assigned to individual channels and/or time intervals.
- the invention is further based on the approach that all contributions are included as summands in the classification value, therefore in one embodiment subsets of contributions can be combined as desired by forming the sum over the subset, in particular over the entire contribution of a channel (sum over all time intervals of this channel), over the entire contribution of a time interval (sum over all channels in this time interval), the contribution of all channels that monitor a Cartesian coordinate, in particular of the multi-axis machine, and/or combinations of (before )specific time intervals and/or channels.
- a probability of belonging to a specific, in particular existing, error class can be assigned to a particular, in particular given, contribution of the at least one channel, in particular by means of a normalization of the probability distribution.
- the accuracy of a localization of important, in particular for classification, time intervals in a data time series can be increased or is thereby increased, in particular in comparison to convolutional neural networks with a differently configured last layer.
- the contributions determined or calculated per time point and channel can be assigned to the probability distributions for IO and/or NIO based on the classification values per time point; in particular, this can subsequently be used to classify the contribution(s). new data time series for each time interval.
- this makes it possible for a statement such as "In channel can be determined, in particular is determined.
- the method further comprises evaluating and/or monitoring a process and/or a multi-axis machine.
- this makes it possible for the process to be carried out more quickly and/or precisely, in particular for errors in the process to be noticed more quickly and, in particular, to be remedied or remedied, in particular by means of is or can be predicted by the machine learning algorithm.
- this makes it possible for wear on the multi-axis machine to be localized quickly and/or precisely, in particular for incorrect execution of a process by the multi-axis machine to be determined, in particular by means of the Machine learning algorithm is or can be predicted.
- the method includes a step of evaluating and/or monitoring the process and/or the multi-axis machine. Furthermore, in one embodiment, the method includes issuing a warning, stopping and/or changing the process, in particular a request for maintenance of the machine and/or carrying out a maintenance step, in particular a (re)calibration in particular of the machine and/or or the means for recording the at least one data time series. Furthermore, in one embodiment, the method includes repeating the process, in particular in a modified form.
- the system has means for acquiring at least one data time series. Furthermore, in one embodiment, the system has means for determining an interpretable result using a machine learning algorithm, in particular based on the at least one data time series. In one embodiment, the means for acquiring at least one data time series is at least one sensor or is designed as a sensor.
- the system has means for determining an average distance of different error classes in relation to a classification value.
- the system has means for normalizing the probability distribution of the values of the error class and determining a probability, in particular with which a classification value is assigned to a warning area or an all-clear area, in particular is assigned, based on the probability distribution. In one embodiment, the system has means for determining an average distance for different error classes.
- a system and/or a means in the sense of the present invention can be designed in terms of hardware and/or software technology, in particular at least one processing unit, in particular a microprocessor unit, preferably connected to a memory and/or bus system with data or signals, in particular digital processing unit ( CPU), graphics card (GPU) or the like, and/or one or more programs or program modules.
- the processing unit can be designed to process commands that are implemented as a program stored in a memory system, to detect input signals from a data bus and/or to deliver output signals to a data bus.
- a storage system can have one or more, in particular different, storage media, in particular optical, magnetic, solid-state and/or other non-volatile media.
- the program can be designed in such a way that it embodies or is able to carry out the methods described here, so that the processing unit can carry out the steps of such methods and can therefore in particular operate or monitor the machine.
- one or more, in particular all, steps of the method are carried out completely or partially automatically, in particular by the control or its means.
- Fig. 3 shows schematically a method according to an embodiment of the present invention.
- various means for detecting the at least one data time series Zi are shown schematically, in particular status sensors 2.1, which preferably detect or can detect a status of at least part of the multi-axis machine 1 or are in particular configured for this purpose; in particular force and/or torque sensors 2.2 or the like, which preferably detect or can detect a force and/or torque or the like or are configured for this purpose, and position sensors 2.3 which detect a position or pose or their time derivatives, in particular speed and/or acceleration can capture or capture or are set up for this purpose, in particular over time.
- the recorded data time series Zi are transferred to means for determining S20 an interpretable result, in particular transmitted in data communication, in particular retrieved by them.
- FIG. 3 shows schematically a method 100 for evaluating and/or checking a process and/or for evaluating and/or checking a multi-axis machine 1, in particular for controlling the process and/or the machine.
- the method exemplarily has several method steps, with the acquisition of at least one data time series Zi being shown with S10. Furthermore, determining an interpretable result with S20 is shown in FIG. If the result describes a value that lies within a warning range, a warning is issued. If the result describes a value that is in an all-clear range, an all-clear is issued. This is shown in each case with S30.
- S40 schematically represents the evaluation and/or monitoring, in particular controlling the process and/or the multi-axis machine. The method can preferably be repeated, which is shown by the dashed arrow in Figure 3, in particular with a modified process, a recalibrated multi-axis machine and/or a serviced multi-axis machine, or the like.
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Artificial Intelligence (AREA)
- Evolutionary Computation (AREA)
- Data Mining & Analysis (AREA)
- Mathematical Physics (AREA)
- Software Systems (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Computing Systems (AREA)
- Automation & Control Theory (AREA)
- Quality & Reliability (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Health & Medical Sciences (AREA)
- Computational Linguistics (AREA)
- Molecular Biology (AREA)
- Mechanical Engineering (AREA)
- Biophysics (AREA)
- Robotics (AREA)
- Evolutionary Biology (AREA)
- Bioinformatics & Computational Biology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Fuzzy Systems (AREA)
- Medical Informatics (AREA)
- Testing And Monitoring For Control Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022205534.9A DE102022205534A1 (de) | 2022-05-31 | 2022-05-31 | Überwachen einer mehrachsigen Maschine mittels interpretierbarer Zeitreihenklassifikation |
| PCT/EP2023/062634 WO2023232428A1 (de) | 2022-05-31 | 2023-05-11 | Überwachen einer mehrachsigen maschine mittels interpretierbarer zeitreihenklassifikation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4533193A1 true EP4533193A1 (de) | 2025-04-09 |
Family
ID=86558811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23726104.5A Pending EP4533193A1 (de) | 2022-05-31 | 2023-05-11 | Überwachen einer mehrachsigen maschine mittels interpretierbarer zeitreihenklassifikation |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250322037A1 (de) |
| EP (1) | EP4533193A1 (de) |
| CN (1) | CN119301533A (de) |
| DE (1) | DE102022205534A1 (de) |
| WO (1) | WO2023232428A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20240066686A1 (en) * | 2022-08-26 | 2024-02-29 | Körber Supply Chain Llc | Robotic gripper alignment monitoring system |
| CN119337300B (zh) * | 2024-12-23 | 2025-03-04 | 中国科学院工程热物理研究所 | 一种基于多源数据融合的数控机床健康监测方法、系统及程序产品 |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7373555B2 (en) * | 2003-05-09 | 2008-05-13 | Hewlett-Packard Development Company, L.P. | Systems and methods controlling transaction draining for error recovery |
| DE102004008757B4 (de) * | 2004-02-23 | 2006-04-06 | Infineon Technologies Ag | Paritätsprüfungs-Schaltung zur kontinuierlichen Prüfung der Parität einer Speicherzelle |
| US7729789B2 (en) * | 2004-05-04 | 2010-06-01 | Fisher-Rosemount Systems, Inc. | Process plant monitoring based on multivariate statistical analysis and on-line process simulation |
| US7730363B2 (en) * | 2004-09-30 | 2010-06-01 | Toshiba Solutions Corporation | Reliability evaluation system, reliability evaluating method, and reliability evaluation program for information system |
| US7617074B2 (en) * | 2007-07-06 | 2009-11-10 | Microsoft Corporation | Suppressing repeated events and storing diagnostic information |
| DE102008032885A1 (de) | 2008-07-14 | 2010-01-21 | Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG | Verfahren und Vorrichtung zur Überprüfung und Feststellung von Zuständen eines Sensors |
| JP2011237950A (ja) * | 2010-05-07 | 2011-11-24 | Fujitsu Ltd | 情報処理装置、バックアップサーバ、バックアッププログラム、バックアップ方法及びバックアップシステム |
| US9030316B2 (en) * | 2013-03-12 | 2015-05-12 | Honeywell International Inc. | System and method of anomaly detection with categorical attributes |
| US11709939B2 (en) * | 2018-05-04 | 2023-07-25 | New York University | Anomaly detection in real-time multi-threaded processes on embedded systems and devices using hardware performance counters and/or stack traces |
| EP4290412A3 (de) * | 2018-09-05 | 2024-01-03 | Sartorius Stedim Data Analytics AB | Computerimplementiertes verfahren, computerprogrammprodukt und system zur datenanalyse |
| US20200233397A1 (en) * | 2019-01-23 | 2020-07-23 | New York University | System, method and computer-accessible medium for machine condition monitoring |
| JP7108577B2 (ja) | 2019-05-13 | 2022-07-28 | 株式会社日立製作所 | 診断装置と診断方法および加工装置 |
| DE102019219300A1 (de) | 2019-12-11 | 2021-07-01 | Robert Bosch Gmbh | Ermitteln relevanter Sensoren für die Zustandsüberwachung von Geräten und Systemen |
| US11381506B1 (en) * | 2020-03-27 | 2022-07-05 | Amazon Tehonlogies, Inc. | Adaptive load balancing for distributed systems |
| EP3910571A1 (de) * | 2020-05-13 | 2021-11-17 | MasterCard International Incorporated | Verfahren und systeme zur serverfehlervorhersage unter verwendung von serverprotokollen |
| US11237880B1 (en) * | 2020-12-18 | 2022-02-01 | SambaNova Systems, Inc. | Dataflow all-reduce for reconfigurable processor systems |
| US11656932B2 (en) * | 2021-07-19 | 2023-05-23 | Kyndryl, Inc. | Predictive batch job failure detection and remediation |
| DE202021104953U1 (de) | 2021-09-14 | 2021-09-28 | Abb Schweiz Ag | Überwachungsvorrichtung für den laufenden Betrieb von Geräten und Anlagen |
| US11953979B2 (en) * | 2022-02-02 | 2024-04-09 | Sap Se | Using workload data to train error classification model |
| US11983093B2 (en) * | 2022-03-24 | 2024-05-14 | Amazon Technologies, Inc. | Tracking status of managed time series processing tasks |
-
2022
- 2022-05-31 DE DE102022205534.9A patent/DE102022205534A1/de active Pending
-
2023
- 2023-05-11 EP EP23726104.5A patent/EP4533193A1/de active Pending
- 2023-05-11 CN CN202380043780.5A patent/CN119301533A/zh active Pending
- 2023-05-11 US US18/866,284 patent/US20250322037A1/en active Pending
- 2023-05-11 WO PCT/EP2023/062634 patent/WO2023232428A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| US20250322037A1 (en) | 2025-10-16 |
| CN119301533A (zh) | 2025-01-10 |
| DE102022205534A1 (de) | 2023-11-30 |
| WO2023232428A1 (de) | 2023-12-07 |
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