Optimal design of power-split hybrid tracked vehicles using two planetary gears

2018 ◽  
Vol 77 (1/2) ◽  
pp. 43
Author(s):  
Zhaobo Qin ◽  
Yugong Luo ◽  
Keqiang Li ◽  
Ziheng Pan ◽  
Huei Peng
2018 ◽  
Vol 77 (1/2) ◽  
pp. 43
Author(s):  
Ziheng Pan ◽  
Huei Peng ◽  
Zhaobo Qin ◽  
Yugong Luo ◽  
Keqiang Li

Author(s):  
Zhaobo Qin ◽  
Yugong Luo ◽  
Keqiang Li ◽  
Huei Peng

Hybrid tracked vehicles are common in construction, agriculture, and military applications. Most use a series hybrid powertrain with large motors and operate at a relatively low efficiency. Although some researchers have proposed power-split powertrains, most of these would require an additional mechanism to achieve skid steering. To solve this problem and enhance drivability, a single-mode power-split hybrid powertrain for tracked vehicles with two outputs connected to the left and right tracks is proposed. The powertrain with three planetary gears (PGs) would then be able to control the torque on the two tracks independently and achieve skid steering. This powertrain has three degrees-of-freedom (DOF), allowing for control of the output torques and the engine speed independently from the vehicle running speed. All design candidates with three PGs are exhaustively searched by analyzing the dynamic characteristics and control to obtain the optimal design. Efficient topology design selection with parameter sizing and component sizing is accomplished using the enhanced progressive iteration approach to achieve better fuel economy using downsized components.


Author(s):  
Zhaobo Qin ◽  
Yugong Luo ◽  
Keqiang Li ◽  
Huei Peng

Powertrain design for power-split hybrid vehicles using planetary gears has been widely researched. As proved, the total number of candidate designs is large due to the diversity of connection ways between devices and planetary gears. In this paper, a new powertrain design approach is developed and applied to power-split hybrid tracked vehicles. The three-step approach that uses constraint-based configuration selection, automated dynamic modeling, drivability screening and fuel economy screening can further reduce computation load and rapidly converge to superior designs. A case study is conducted to identify better designs compared with current designs for hybrid tracked dozers.


2018 ◽  
Author(s):  
Zhaobo Qin ◽  
Yugong Luo ◽  
Zhong Cao ◽  
Keqiang Li

2010 ◽  
Vol 34-35 ◽  
pp. 50-56
Author(s):  
Shao Bo Yang ◽  
Jun Fu Zhang ◽  
Jin Ge Wang ◽  
Xing Qiao Deng

Performance of gearbox drive system has a great impact on the working life of the whole drive mechanism, especially in wind power generation systems. Using the power split differencial drive system, the objective function of speed up Gearbox optimal design is built adopting the nonlinear constrant minimum function Fmincon from Matlab, the constraints are settled and the relevant parameters of the gearbox with the minimum volume while satisfying the transmission ratio are finally obtained. Then the optimised results is verified with single factor method. The results show that the overall volume of the gearbox is reduced by 9.13% after optimization.


2016 ◽  
Vol 17 (2) ◽  
pp. 299-309 ◽  
Author(s):  
W. Zhuang ◽  
X. Zhang ◽  
D. Zhao ◽  
H. Peng ◽  
L. Wang

Energies ◽  
2018 ◽  
Vol 11 (7) ◽  
pp. 1705 ◽  
Author(s):  
Roberto Finesso ◽  
Daniela Misul ◽  
Ezio Spessa ◽  
Mattia Venditti

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