OPTIMAL CONTROL OF A STEP-BY-STEP TRANSMISSION OF VEHICLES

Authors

DOI:

https://doi.org/10.20998/2079-0023.2020.01.08

Keywords:

automatic transmission, optimal control, vehicle, universal engine performance, gear shift line, fuel efficiency

Abstract

The actual problem of optimal selection of means of transport (MT) gear ratios, equipped with internal combustion engines (ICE) with a step-by-step gearbox according to the criterion of minimum fuel consumption is considered in the article. An analysis of the scientific and technical literature has showed the absence of simple and sufficiently justified algorithms for controlling the vehicle’s power plant, which is a system that consists of an ICE and an adjustable transmission. The aim of this work is the theoretical justification of the law of gear ratios shifting of a step-by-step transmission, ensuring maximum fuel efficiency for any power and speed mode of MT. The proposed method is based on set of linear transformations that connect the engine moment and engine speed with a traction force and a speed of MT. The set of gear ratios correspond to the set of one-extremal functions of specific fuel consumptions. The set of points of equal levels lines corresponding to two neighboring values of the gear ratios of the transmission forms a gear shift line. An appropriate algorithm for switching gear ratios is proposed, which ensures the most efficient operation of a power plant of MT in conditions of variable power and speed modes.

Author Biographies

Oleksandr Sergiyovich Kutsenko, National Technical University "Kharkiv Polytechnic Institute"

Doctor of Technical Sciences, Professor, National Technical University "Kharkiv Polytechnic Institute", Head of the Department of System Analysis and Information-Analytical Technologies; Kharkiv, Ukraine

Serhii Volodymyrovich Kovalenko, National Technical University "Kharkiv Polytechnic Institute"

PhD, Associate Professor, National Technical University "Kharkiv Polytechnic Institute", Associate Professor of the Department of System Analysis and Information-Analytical Technologies; Kharkiv, Ukraine

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How to Cite

Kutsenko, O. S., & Kovalenko, S. V. (2020). OPTIMAL CONTROL OF A STEP-BY-STEP TRANSMISSION OF VEHICLES. Bulletin of National Technical University "KhPI". Series: System Analysis, Control and Information Technologies, (1 (3), 43–48. https://doi.org/10.20998/2079-0023.2020.01.08

Issue

No. 1 (3) (2020)

Section

CONTROL IN TECHNICAL SYSTEMS

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