Construction of Driving Cycle for Military Tracked Vehicles Considering Road Features

doi:10.12382/bgxb.2022.0828

Abstract

Abstract:

A tracked vehicle driving cycle considering road features is established to effectively evaluate the fuel economy of the vehicle powertrain. The operating data of vehicle on paved road, gravel road and undulating dirt road are collected as original data, and the data are filtered by wavelet analysis. Based on the processed vehicle data, the typical driving cycles under the condition of the three road surfaces are constructed by using principal component analysis, K-means clustering and Markov chain, and the similarity analysis of the constructed driving cycle is carried out. The research results show that the proposed method can be used to effectively construct the driving cycle that resembles the operating characteristics of military tracked vehicles, and the characteristics of the driving cycles under the condition of the three road surfaces have high similarity with the original data, the root mean square errors of the joint vehicle speed-acceleration probability distribution with the original data for the three road surfaces are 0.0356, 0.0039 and 0.0196, respectively, so the driving cycle constructed in this paper can effectively reflect the real operation of tracked vehicles.

Key words: military tracked vehicle, driving cycle construction, road feature, Markov chain, clustering

CLC Number:

U467

WANG Xu, LI Rui, HUANG Ying, SHEN Jiwei, SHANG Xianhe. Construction of Driving Cycle for Military Tracked Vehicles Considering Road Features[J]. Acta Armamentarii, 2024, 45(3): 907-915.

Figures/Tables 14

References 20

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特征参数	符号	特征参数	符号
平均车速/(km·h^-1)	$\bar{v}$	平均加速度/(m·s^-2)	$\bar{a}$
最大车速/(km·h^-1)	v_max	最大加速度/(m·s^-2)	a_max
最小车速/(km·h^-1)	v_min	最小加速度/(m·s^-2)	a_min
车速标准差/(km·h^-1)	v_std	加速度标准差/(m·s^-2)	a_std
加速比例/%	P_acc	减速比例/%	P_dec

特征参数	符号	特征参数	符号
平均车速/(km·h^-1)	$\bar{v}$	平均加速度/(m·s^-2)	$\bar{a}$
最大车速/(km·h^-1)	v_max	最大加速度/(m·s^-2)	a_max
最小车速/(km·h^-1)	v_min	最小加速度/(m·s^-2)	a_min
车速标准差/(km·h^-1)	v_std	加速度标准差/(m·s^-2)	a_std
加速比例/%	P_acc	减速比例/%	P_dec

主成分	铺面路	砂石路	起伏土路
1	0.3488	0.3143	0.3888
2	0.6623	0.6059	0.7416
3	0.8853	0.8721	0.8974
4	0.9528	0.9505	0.9522
5	0.9924	0.9958	0.9968
6	0.9979	0.9992	0.9974
7	0.9991	0.9997	0.9988
8	0.9996	0.9998	0.9997
9	0.9999	0.9999	0.9999
10	1.0000	1.0000	1.0000

主成分	铺面路	砂石路	起伏土路
1	0.3488	0.3143	0.3888
2	0.6623	0.6059	0.7416
3	0.8853	0.8721	0.8974
4	0.9528	0.9505	0.9522
5	0.9924	0.9958	0.9968
6	0.9979	0.9992	0.9974
7	0.9991	0.9997	0.9988
8	0.9996	0.9998	0.9997
9	0.9999	0.9999	0.9999
10	1.0000	1.0000	1.0000