Performance of Fitness Functions Based on Natural Frequencies in Defect Detection Using the Standard PSO‐FEM Approach

Li, Xin; Serra, Roger; Olivier, Julien

doi:10.1155/2021/8863107

Cited by 8 publications

(6 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the BAS algorithm, the smaller the fitness value, the better the system performance [32]. Hence, the inverse of the performance index function is used as the fitness function as shown in Eq.…”

Section: Design Of Fitness Functionmentioning

confidence: 99%

Path tracking control method for automatic navigation rice transplanters based on VUFC and improved BAS algorithm

et al. 2023

View full text Add to dashboard Cite

During the operation of automatic navigation rice transplanter, the accuracy of path tracking is influenced by whether the transplanter can enter the stable state of linear path tracking quickly, thus affecting the operation quality and efficiency. To reduce the time to enter the path tracking stable state and improve the tracking accuracy and stability for the rice transplanter, path tracking control method based on variable universe fuzzy control (VUFC) and improved beetle antenna search (BAS) is proposed in this paper. VUFC is applied to achieve adaptive adjustment of the fuzzy universe by dynamically adjusting the quantization and scaling factors according to the variations of errors by the contraction–expansion factor. To solve the problem of setting the contraction–expansion factor in VUFC and real-time performance, an offline parameter optimization method is presented to calculate the optimal contraction–expansion factor by an iterative optimization algorithm in a path tracking simulation model, where the iterative optimization algorithm is the BAS algorithm improved by the isolated niching technique and adaptive step size strategy in this paper. To verify the effectiveness of the proposed path tracking control method, simulation and field linear path tracking experiments were carried out. Experimental results indicate that the proposed method reduces the time of entering the stable state of linear path tracking and improves the accuracy and stability of path tracking compared with the pure pursuit control method.

show abstract

Section: Design Of Fitness Functionmentioning

confidence: 99%

Path tracking control method for automatic navigation rice transplanters based on VUFC and improved BAS algorithm

et al. 2023

View full text Add to dashboard Cite

show abstract

“…In this article, m = 9 is used uniformly. Besides, when compared with other forms of the fitness function composed of pure natural frequencies, the superiority of fitness function that is shown in Equation ( 7) has been demonstrated in [24].…”

Section: Fitness Functionmentioning

confidence: 99%

An Investigation of Particle Swarm Optimization Topologies in Structural Damage Detection

Serra

Olivier

2021

Applied Sciences

Self Cite

View full text Add to dashboard Cite

In the past few decades, vibration-based structural damage detection (SDD) has attracted widespread attention. Using the response data of engineering structures, the researchers have developed many methods for damage localization and quantification. Adopting meta-heuristic algorithms, in which particle swarm optimization (PSO) is the most widely used, is a popular approach. Various PSO variants have also been proposed for improving its performance in SDD, and they are generally based on the Global topology. However, in addition to the Global topology, other topologies are also developed in the related literature to enhance the performance of the PSO algorithm. The effects of PSO topologies depend significantly on the studied problems. Therefore, in this article, we conduct a performance investigation of eight PSO topologies in SDD. The success rate and mean iterations that are obtained from the numerical simulations are considered as the evaluation indexes. Furthermore, the average rank and Bonferroni-Dunn’s test are further utilized to perform the statistic analysis. From these analysis results, the Four Clusters are shown to be the more favorable PSO topologies in SDD.

show abstract

“…The defective element, simulating the crack, commonly has a reduced Young's modulus. In most of the studies, the number of finite elements in the model is taken between 4 and 30, and the reduction of the elastic modulus of an element is in the range of 20% to 50%, see, for example, [7][8][9][10][11]. This approach requires centering the crack on an element and, therefore, the precision of assessing damage is determined by the distribution of the elements along the beam [10].…”

Section: Introductionmentioning

confidence: 99%

Determining the Severity of Open and Closed Cracks Using the Strain Energy Loss and the Hill-Climbing Method

et al. 2022

View full text Add to dashboard Cite

Evaluating the integrity of structures is an important issue in engineering applications. The use of vibration-based techniques has become a common approach to assessing cracks, which are the most frequently occurring damage in structures. When involving an inverse method, it is necessary to know the influence of the position and the geometry of the crack on the modal parameter changes. The geometry of the crack, both in size and shape, defines the damage severity (DS). In this study, we present a method (DS-SHC) used for estimating the DS for closed and open transverse cracks in beam-like structures using the intact and damaged beam deflections under its weight and a Stochastic Hill Climbing (SHC) algorithm. After describing the procedure of applying DS-SHC, we calculate for a prismatic cantilever beam the severities for different crack types and depths. The results are tested by comparing the DS obtained with DS-SHC with those acquired from dynamic tests made using professional simulation software. We obtained a good fit between the severities determined in these two ways. Subsequently, we performed laboratory experiments and found that the severities obtained with the DS-SHC method can accurately predict the frequency changes due to the crack. Hence, these severities are a valuable tool for damage detection.

show abstract

Performance of Fitness Functions Based on Natural Frequencies in Defect Detection Using the Standard PSO‐FEM Approach

Cited by 8 publications

References 27 publications

Path tracking control method for automatic navigation rice transplanters based on VUFC and improved BAS algorithm

Path tracking control method for automatic navigation rice transplanters based on VUFC and improved BAS algorithm

An Investigation of Particle Swarm Optimization Topologies in Structural Damage Detection

Determining the Severity of Open and Closed Cracks Using the Strain Energy Loss and the Hill-Climbing Method

Contact Info

Product

Resources

About