Abstract
In the railway industry, slip control has always been essential due to the low friction and low adhesion between the wheels and the rail and has been an issue for the design, activity, and operation of railroad vehicles. Slip is an unpredictable parameter in the railroad that disintegrates the surface of the railroad with a contact surface of the boggy wheel brought about by the mechanical force of traction phenomena, it destabilizes the railway traction which does not fulfill safety and punctuality requirements. In this paper, we present the work based on developing a fuzzy logic-based anti-slip controller for the commuter train using FPGA implementation which minimizes slip parameters. The development of a fuzzy logic-based anti-slip controller for the commuter train is designed in MATLAB and then tested for area-performance parameters in FPGA through the system generator library. Simulation is performed to demonstrate the effectiveness of the proposed fuzzy logic control system for anti-slip control under various parameters, the results of simulation prove the effectiveness of the proposed control system as compared with conventional PID controller and shows high anti-slip control performance under nonlinearity of brake dynamics.
Highlights
With the beginning of railroad travel, in movement and plan of the rail route vehicles, adhesive force has been a basic parameter among rail and wheel, especially when the leaves are beaten and develop a low-bond contaminant film on the rail surface amid pre-winter leaf falls, which is to an extraordinary degree difficult to remove
Wheel– rail adhesive force must be adequate for safety and punctuality requirements because low adhesive force during driving diminishes acceleration and this will expand the braking distance, which is a security issue, besides this if adhesive force is too high it produces shear stress and sever surface fatigue
Wheel-rail contact is an open system, two main factors influence rail-road contact conditions such as Environmental conditions including weather and different contaminants every autumn thousands of tons of leaves fall on the tracks as they are compacted they form a smooth and slippery layers that stick to the tracks which cause trains to accelerate and brake gently
Summary
With the beginning of railroad travel, in movement and plan of the rail route vehicles, adhesive force has been a basic parameter among rail and wheel, especially when the leaves are beaten and develop a low-bond contaminant film on the rail surface amid pre-winter leaf falls, which is to an extraordinary degree difficult to remove. The force between the wheel and rail, influences the performance and safety of railroad vehicles. The prediction of the wheel-rail adhesion is very important for railway operation and simulation of multi-body vehicle dynamics.
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