Gearshift Control for Transmission-By-Wire Based on Position Sensorless | |
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( Volume 6 Issue 6,June 2020 ) OPEN ACCESS | |
Author(s): | |
Hu Mu, Jinyu Qu, Tianmiao Zhang, Zhengzhe Teng | |
Abstract: | |
In order to simplify the design structure of Transmission-By-Wire, a new position sensorless gearshift control is proposed using electromotive force detection instead of real-time displacement estimation or displacement sensor. Based on the principle of back EMF, the change of electromotive force produce by electromagnetic coil and armature under the current is switched on. According to the working principle of electromagnetic clutch. Using GUI toolbox of MATLAB to analyse the electromagnetic coil and armature, the dynamic response mathematical model of armature is established. Through the simulation analysis, the armature position of the position sensorless transmission-by-wire can be accurate obtained by simulation. The movement state of the armature is divided into three stages, the axial displacement is 1.2 mm, the maximum force is 62 N, its dynamic response characteristics meet the requirements of position sensorless gearshift control. |
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