Abstract

The dredging output of suction dredger mainly comes from the suction density of the rake head. Accurate prediction of suction density is of great significance to improve the dredging output of suction dredger. In order to overcome the shortcomings of low accuracy and poor real-time performance of the current inhalation density prediction methods, a bat algorithm is proposed to optimize the inhalation density prediction method of extreme learning machine. The bat algorithms for optimizing extreme learning machines prediction model is constructed based on the measured construction data of “Xinhaifeng” Yangtze Estuary, and compared with other prediction models. Finally, the bat algorithms for optimizing extreme learning machines model is used to build the output simulator of inhalation density. Compared with the actual construction, the selection of control parameters is analyzed when the output of inhalation density is the best. Experients show that bat algorithms for optimizing extreme learning machines prediction has high accuracy and good stability, and can provide scientific and effective reference for yield prediction and construction guidance.

Highlights

  • In the dredging process of the dredger, the dredging output is mainly caused by the excavation of the rake head

  • The Extreme Learning Machine (ELM) algorithm only needs to set the number of hidden layer neurons

  • During the dredging construction of the suction dredger, the factors affecting the dredging output can be divided into the excavation volume of the rake head and the overflow of the mud hopper

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Summary

Introduction

In the dredging process of the dredger , the dredging output is mainly caused by the excavation of the rake head. In view of the research on the production of rake head, this paper uses the extreme learning machine (ELM) algorithm to analyze the data black box of rake head. The Extreme Learning Machine (ELM) algorithm only needs to set the number of hidden layer neurons It can obtain the unique optimal solution without adjusting the neuron weights and thresholds. In order to improve the generalization performance of the Extreme Learning Machine (ELM) model, some literatures use particle swarm optimization algorithm [10] and genetic algorithm [11] to optimize the connection weight and hidden layer threshold of ELM. The bat algorithm is used to optimize the extreme learning machine (ELM) This method is easy to realize the dynamic conversion between the global search and the local search. Compared with other optimization algorithms, the structure is simple, the parameter setting is less, and the method is better Convergence performance

Dredging data analysis
Data preprocessing
Extreme learning machine
Bat algorithm optimization ELM model construction
Data source
Actual production of Rake head
Analysis of experimental results
Conclusion
Full Text
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