On the Backward Path Tracking Control of N-Trailer Systems

2021 ◽  
Vol 1 (1) ◽  
pp. 13-20
Author(s):  
Julius Kolb ◽  
Gunter Nitzsche ◽  
Sebastian Wagner ◽  
Klaus Röbenack
Keyword(s):  
Tracking Control ◽  
Path Tracking ◽  
Stability Conditions ◽  
Control Law ◽  
Exact Linearization ◽  
Lateral Control ◽  
General Stability ◽  
Articulated Vehicles ◽  
Articulated Vehicle ◽  
Wheeled Vehicles

This paper considers the lateral control of articulated wheeled vehicles in backward motion. The parameterized articulated vehicle is composed of a car-like truck and N passive trailers, resulting in one single steerable axle. First a nonlinear path tracking control law based on exact linearization of an offset model is reviewed and the general stability conditions of such systems is presented. Second, a stability analysis for some vehicle cases is performed and verified in simulation. The possible application of this path tracking control law in real world articulated vehicles is discussed, and its limitations are shown.

scholarly journals Concept and Preliminary Simulations of a Driver-Aid System for Transport Tasks of Articulated Vehicles with a Hydrostatic Steering System

2020 ◽  
Vol 10 (17) ◽  
pp. 5747
Author(s):  
Marian J. Łopatka ◽  
Arkadiusz Rubiec
Keyword(s):  
Steering System ◽  
Directional Stability ◽  
Lift Capacity ◽  
Straight Line ◽  
Hydraulic Steering ◽  
Comprehensive Knowledge ◽  
Articulated Vehicles ◽  
Articulated Vehicle ◽  
Use Efficiency ◽  
Wheeled Vehicles

Heavy-wheeled vehicles with articulated hydraulic steering systems are widely used in construction, road building, forestry, and agriculture, as transport units and tool-carriers because they have many unique advantages that are not available in car steering systems, based on the Ackermann principle, such as—high cross-country mobility, excellent maneuverability, and high payload and lift capacity, due to heavy axles components. One problem that limits their speed of operation and use efficiency is that they have poor directional stability. During straight movement, articulated tractors’ deviate from a straight line and permanent driver correction is required. This limits the vehicles’ speed and productivity. In this study, we describe a driver-aid system concept that would improve the directional stability of articulated vehicles. Designing such a system demands a comprehensive knowledge of the reasons for the snaking phenomenon and driver behaviors. The results of our articulated vehicle directional stability investigation are presented. On this basis, we developed models of articulated vehicles with hydraulic steering systems and driver interaction. We next added the stabilizing system to the model. A simulation demonstrated the possibility of directional stability improvement.

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