Full
Outline
To improve the accuracy of state-of-charge (SOC) estimation for lithium-ion batteries, an SOC estimation method based on an improved sparrow search algorithm optimized extreme learning machine is proposed. In response to the problem of unsatisfactory estimation accuracy caused by the improper number of neurons in the hidden layer of the extreme learning machine, the sparrow search algorithm is selected to optimize the number of neurons in the hidden layer of the extreme learning machine. To avoid the problems of poor diversity of randomly generated populations and the tendency to fall into local optima at the later stage of the sparrow search algorithm, Tent chaotic mapping and the Metropolis criterion in a simulated annealing algorithm are introduced to improve the sparrow search algorithm’s global search capability. The advantages of the proposed algorithm in terms of accuracy and efficiency compared with the traditional extreme learning machine and long short-term memory networks were verified through simulation experiments under FUDS operating conditions at room temperatures. Finally, a dSPACE hardware-in-the-loop experimental platform was established and further used for online verification under UDDS conditions at 0 ℃ and 25 ℃. Results showed that the proposed algorithm maintained SOC estimation errors within 1.3% at both the environmental temperatures, and the root mean square error decreased by 46.7% and 51.8% compared with the traditional extreme learning machine, respectively, thereby verifying its feasibility and superiority.
42
4
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
