Title: Design and experimental study on automatic levelling system of high ground gap plant protection system chassis

Authors: Yixin Shi; Xin Shu; Ping Jiang; Wenwu Hu; Wei Lin; Chengquan Dong

Addresses: College of Engineering, Hunan Agricultural University, Changsha 410128, China ' College of Engineering, Hunan Agricultural University, Changsha 410128, China ' College of Engineering, Hunan Agricultural University, Changsha 410128, China ' College of Engineering, Hunan Agricultural University, Changsha 410128, China ' College of Engineering, Hunan Agricultural University, Changsha 410128, China ' College of Engineering, Hunan Agricultural University, Changsha 410128, China

Abstract: In order to realise ground clearance and levelling control of plant protection machine in high ground clearance. In this paper, a chassis automatic levelling control system is designed. Position error control method and angle error control method are used to control the chassis automatic levelling control system, which is divided into ground clearance height adjustment and chassis levelling control strategy, respectively. The system is controlled by combining fuzzy control algorithm and preset point levelling method. The experiment was carried out on the chassis of our self-developed multi-functional plant protection machine with high ground clearance. The results show that the automatic levelling system can complete the chassis levelling well. Its average horizontal error is < 0.20°, root mean square error < 0.25°, maximum error is 1.13°, average levelling time < 26 s, and levelling precision < 0.2°. The system can meet the operation requirements of plant protection machine.

Keywords: plant protection machine; fuzzy control; control system; automatic levelling; levelling strategy.

DOI: 10.1504/IJASS.2020.108656

International Journal of Applied Systemic Studies, 2020 Vol.9 No.1, pp.11 - 25

Received: 19 Feb 2019
Accepted: 10 Aug 2019

Published online: 24 Jul 2020 *

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