Autor: Yao, Li - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Energy management strategy of dual planetary hybrid electric vehicle based on optimal transmission efficiency
Autorzy:: Wang, Shangxu
Li, Jiaxin
Shi, Dehua
Sun, Xiaoqiang
Yao, Yong
Powiązania:: https://bibliotekanauki.pl/articles/279483.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: power split hybrid electric vehicle
mechanical point
fuzzy torque distribution
fuel economy
Opis:: A power split hybrid electric vehicle with dual planetary gear sets is studied in this paper. Firstly, the power split and circulation phenomenon are further described by analyzing a speed and torque relationship between the engine, motors and the output shaft based on the lever analogy. The transmission efficiency and the electric power ratio are then obtained. The working modes of the hybrid electric vehicle (HEV) are divided according to the system operation mechanism. On this basis, the engine optimal operating line (OOL) control strategy and the mechanical point (MP) control strategy are designed. Furthermore, a fuzzy controller is designed to realize the optimal torque distribution of the engine and the motors in the MP control strategy. Simulation results demonstrate that the MP control strategy can guarantee a higher efficiency of the transmission system, which also shows good performance in improving fuel economy of the HEV by adjusting the engine operating point.
Źródło:: Journal of Theoretical and Applied Mechanics; 2019, 57, 2; 383-396
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Indicated mean effective pressure oscillations in a natural gas combustion engine by recurrence plots
Analiza wykresów rekurencyjnych dla średniego efektywnego ciśnienia indykowanego w silniku spalinowym zasilanym gazem naturalnym
Autorzy:: Litak, G.
Syta, A.
Yao, B. -F.
Li, G.-X
Powiązania:: https://bibliotekanauki.pl/articles/280206.pdf
Data publikacji:: 2009
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: engine
combustion
recurrence plot
nonlinear oscillations
Opis:: We investigate the nonlinear time series of Indicated Mean Effective Pressure (IMEP) of the spark ignition engine cyclic combustion process of a natural gas. By applying the embedding theorem and the recurrence plots technique, we show changes in the engine dynamics for different equivalence ratios. Especially, we provide arguments for intermittency behaviour.
Zbadano nieliniowe przebiegi czasowe Średniego Ciśnienia Indykowanego cyklicznego procesu spalania w silniku spalinowym zasilanym gazem naturalnym. Stosując twierdzenie o zanurzeniu oraz technikę wykresów rekurencyjnych, pokazano istotne różnice w dynamice silnika przy zmianie składu mieszanki paliwa wyrażonej wartością współczynnika równowagowego. W szczególności podano argumenty przemawiające za występowaniem zjawiska intermitencji.
Źródło:: Journal of Theoretical and Applied Mechanics; 2009, 47, 1; 55-67
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Analysis of a nonlinear tuned mass damper by using the multi-scale method
Autorzy:: Liu, Junfeng
Yao, Ji
Huang, Kun
Zhang, Qing
Ze, Li
Powiązania:: https://bibliotekanauki.pl/articles/2104766.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: nonlinear characteristics
complex average method
multi-scale method
nonlinear design
control performance
Opis:: A tuned mass damper is a kind of vibration damping device which has been widely used in tall buildings, machinery, bridges, aerospace engineering and other fields. In practical engineering applications, due to large deformation caused by large displacement, errors in engineering constructions and the existence of limit devices, the structure and tuned mass dampers inevitably produce some nonlinear characteristics, but these nonlinearities are often ignored. The results of this study confirm that the nonlinearity of the structure and the mass damper should be considered in the process of optimal frequency design, otherwise there will be a large deviation between the design optimal frequency of the mass damper and the actual optimal frequency. In this paper, nonlinear characteristics of the tuned mass damper and the main structure are considered. The first-order differential equations are obtained by using the complex average method, and the nonlinear equations of the tuned mass damper system are derived by using the multi-scale method. On this basis, the parameters are determined. The numerical results show that the error of the approximate solution method is small in the given example. The nonlinear tuned mass damper with nonlinear design exhibits a better control performance.
Źródło:: Journal of Theoretical and Applied Mechanics; 2022, 60, 3; 463--477
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Numerical investigation of impact of non-spherical particles with spin and multi-point contact
Autorzy:: Xu, Xindong
Yu, Kuahai
Yao, Shile
Xin, Shihong
Yue, Zhufeng
Li, Lei
Powiązania:: https://bibliotekanauki.pl/articles/1839669.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: nonspherical particles
sphere element combination method
multi-point contact
coefficient of restitution
collision duration
Opis:: This paper investigates the dynamic behavior of elastoplastic collision of several non-sphere particles through the spherical element combination method. The particles are cylinder, triangle and square particles, which are combined by 2, 3 and 4 spheres using the spherical element method, respectively. Results reveal that the collision of the evaluated irregular particles exhibits three contact styles, which are single point contact, instantaneous multi-point contact and sequential multi-point contact. Normal contact torque and frictional torque act together on the spin of a particle and causes sequential multi-point contact under certain conditions for square particles.
Źródło:: Journal of Theoretical and Applied Mechanics; 2021, 59, 3; 431-441
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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