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Mathematical Problems in Engineering
Volume 2016, Article ID 2548967, 14 pages
Research Article

Design of a Load Torque Based Control Strategy for Improving Electric Tractor Motor Energy Conversion Efficiency

1School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, No. 5, Jinhua South Road, Beilin District, Xi’an 710048, China
2Vehicle & Transportation Engineering Institute, Henan University of Science and Technology, No. 48, Xiyuan Road, Jianxi District, Luoyang 471003, China

Received 12 January 2016; Revised 23 March 2016; Accepted 31 March 2016

Academic Editor: Luis J. Yebra

Copyright © 2016 Mengnan Liu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Supplementary Material

Description of Supplementary Material A:

Corresponding to Figure 9 in the text, data of plowing parameter numbering, time, equivalent resistance and soil specific resistance in the tractive simulation can be seen in the table of Supplementary Material A. In this table, different colors are used to discriminate each set of plowing parameters in Table 2. And the main independent variable, soil specific resistance, is changed from 0.007 to 0.01, which contains a wide soil humidity scope of common soil conditions in the Northeast China region.

Description of Supplementary Material B

The figure in Supplementary Material B describes the initialization signals’ superposition process during the simulation. As stated in the text, there are two initialization signal source, time trigger and load torque controller, in load torque control strategy (LTCS). Time trigger outputs the initialization signal periodically, and the load controller produces the initialization signal following the fuzzy rules of Figure 8. The initialization signal of simulation is obtained by the superposition of the two initialization signals.

  1. Supplementary Material