Welcome to Journal of Automotive Safety and Energy,

Journal of Automotive Safety and Energy ›› 2022, Vol. 13 ›› Issue (2): 341-349.DOI: 10.3969/j.issn.1674-8484.2022.02.015

• Automotive Energy Efficiency and Environment Protection • Previous Articles     Next Articles

Construction of driving cycle of city bus line in Xi’an based on clustering and Markov chain method

LI Yaohua(), SHAO Pandeng, ZHAI Dengwang, REN Tianyuan, SONG Weiping, LIU Yang, ZHAO Chenghui   

  1. School of Automobile, Chang’an University, Xi’an 710064
  • Received:2021-01-18 Revised:2022-04-01 Online:2022-06-30 Published:2022-07-01

Abstract:

A driving cycles of Xi’an city bus were constructed by clustering and Markov chain method to construct driving conditions that reflect the local vehicle driving characteristics for a specific area. The number of clusters and characteristic parameters in clustering were determined, and the method to determine the length of driving cycle by Markov chain was proposed. The specific energy consumption per mileage was defined as the criterion to select typical driving cycle among 50 candidate driving cycles. The results show that, compared with the clustering method and the V-A matrix method, the driving conditions constructed based on the clustering and Markov chain method have the smallest deviation from the sample data, the average deviation rate is 1.17%, and the difference in energy consumption per 100 kilometers is the smallest, the deviation rate is 0.069%. The driving cycle constructed by clustering and Markov chain method shows higher accuracy and can reflect the actual driving conditions better.

Key words: clustering method, Markov chain method, driving cycle, energy consumption

CLC Number: