Cam Mechanisms Reverse Engineering Based on Evolutionary Algorithms
Cam follower mechanisms are widely used in automated manufacturing machinery to transform a rotary stationary motion into a more general required movement. Reverse engineering of cams has been studied, and some solutions based on different approaches have been identified in the literature. This arti...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-12-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/10/24/3073 |
| _version_ | 1797505184745652224 |
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| author | Monica Tiboni Cinzia Amici Roberto Bussola |
| author_facet | Monica Tiboni Cinzia Amici Roberto Bussola |
| author_sort | Monica Tiboni |
| collection | DOAJ |
| description | Cam follower mechanisms are widely used in automated manufacturing machinery to transform a rotary stationary motion into a more general required movement. Reverse engineering of cams has been studied, and some solutions based on different approaches have been identified in the literature. This article proposes an innovative method based on the use of an evolutionary algorithm for the identification of a law of motion that allows for approximating in the best way the motion or the sampled profile on the physical device. Starting from the acquired data, through a genetic algorithm, a representation of the movement (and therefore of the cam profile) is identified based on a type of motion law traditionally used for this purpose, i.e., the modified trapezoidal (better known as modified seven segments). With this method it is possible to estimate the coefficients of the parametric motion law, thus allowing the designer to further manipulate them according to the usual motion planning techniques. In a first phase, a study of the method based on simulations is carried out, considering sets of simulated experimental measures, obtained starting from different laws of motion, and verifying whether the developed genetic algorithm allows for identifying the original law or approximating one. For the computation of the objective function, the Euclidean norm and the Dynamic Time Warping (DTW) algorithm are compared. The performed analysis establishes in which situations each of them is more appropriate. Implementation of the method on experimental data validates its effectiveness. |
| first_indexed | 2024-03-10T04:14:59Z |
| format | Article |
| id | doaj.art-6588fbb21d77443591d64988e4f2d10e |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-10T04:14:59Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-6588fbb21d77443591d64988e4f2d10e2023-11-23T08:01:45ZengMDPI AGElectronics2079-92922021-12-011024307310.3390/electronics10243073Cam Mechanisms Reverse Engineering Based on Evolutionary AlgorithmsMonica Tiboni0Cinzia Amici1Roberto Bussola2Department of Mechanical and Industrial Engineering, University of Brescia, via Branze, 38, 25123 Brescia, ItalyDepartment of Mechanical and Industrial Engineering, University of Brescia, via Branze, 38, 25123 Brescia, ItalyDepartment of Mechanical and Industrial Engineering, University of Brescia, via Branze, 38, 25123 Brescia, ItalyCam follower mechanisms are widely used in automated manufacturing machinery to transform a rotary stationary motion into a more general required movement. Reverse engineering of cams has been studied, and some solutions based on different approaches have been identified in the literature. This article proposes an innovative method based on the use of an evolutionary algorithm for the identification of a law of motion that allows for approximating in the best way the motion or the sampled profile on the physical device. Starting from the acquired data, through a genetic algorithm, a representation of the movement (and therefore of the cam profile) is identified based on a type of motion law traditionally used for this purpose, i.e., the modified trapezoidal (better known as modified seven segments). With this method it is possible to estimate the coefficients of the parametric motion law, thus allowing the designer to further manipulate them according to the usual motion planning techniques. In a first phase, a study of the method based on simulations is carried out, considering sets of simulated experimental measures, obtained starting from different laws of motion, and verifying whether the developed genetic algorithm allows for identifying the original law or approximating one. For the computation of the objective function, the Euclidean norm and the Dynamic Time Warping (DTW) algorithm are compared. The performed analysis establishes in which situations each of them is more appropriate. Implementation of the method on experimental data validates its effectiveness.https://www.mdpi.com/2079-9292/10/24/3073evolutionary algorithmsreverse engineeringcam mechanismslaw of motiongenetic algorithms |
| spellingShingle | Monica Tiboni Cinzia Amici Roberto Bussola Cam Mechanisms Reverse Engineering Based on Evolutionary Algorithms Electronics evolutionary algorithms reverse engineering cam mechanisms law of motion genetic algorithms |
| title | Cam Mechanisms Reverse Engineering Based on Evolutionary Algorithms |
| title_full | Cam Mechanisms Reverse Engineering Based on Evolutionary Algorithms |
| title_fullStr | Cam Mechanisms Reverse Engineering Based on Evolutionary Algorithms |
| title_full_unstemmed | Cam Mechanisms Reverse Engineering Based on Evolutionary Algorithms |
| title_short | Cam Mechanisms Reverse Engineering Based on Evolutionary Algorithms |
| title_sort | cam mechanisms reverse engineering based on evolutionary algorithms |
| topic | evolutionary algorithms reverse engineering cam mechanisms law of motion genetic algorithms |
| url | https://www.mdpi.com/2079-9292/10/24/3073 |
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