A Global Approach to Vehicle Control: Coordination of Four Wheel Steering and Wheel Torques

1994 ◽  
Vol 116 (4) ◽  
pp. 659-667 ◽  
Author(s):  
Ssu-Hsin Yu ◽  
John J. Moskwa
Keyword(s):  
Control Systems ◽  
Controller Design ◽  
Sliding Mode ◽  
Vehicle Control ◽  
Point Of View ◽  
Sliding Mode Controller ◽  
Global Approach ◽  
Ground Vehicles ◽  
Advanced Control ◽  
Simulation Results

Currently, advanced control systems implemented on production ground vehicles have the goal of promoting maneuverability and stability. With proper coordination of steering and braking action, these goals may be achieved even when road conditions are severe. This paper considers the effect of steering and wheel torques on the dynamics of vehicular systems. Through the input-output linearization technique, the advantages of four-wheel steering (4WS) system and independent torques control are clear from a mathematical point of view. A sliding mode controller is also designed to modify driver’s steering and braking commands to enhance maneuverability and safety. Simulation results show the maneuverability and safety are improved. Although the controller design is based on a four-wheel steering vehicle, the algorithm can also be applied to vehicles of different configurations with slight changes.

Sliding Mode Observer and Controller Design for Nonlinear Supersonic Missile

2013 ◽  
Vol 718-720 ◽  
pp. 1228-1233
Author(s):  
Hong Chao Zhao ◽  
Xian Jun Shi ◽  
Ting Wang
Keyword(s):  
Lyapunov Stability ◽  
Controller Design ◽  
Sliding Mode ◽  
Equations Of Motion ◽  
Lyapunov Stability Theory ◽  
Sliding Mode Observer ◽  
Sliding Mode Controller ◽  
Output Redefinition ◽  
Simulation Results ◽  
Nonlinear Equations Of Motion

The nonlinear equations of motion were constructed for a supersonic anti-warship missile. In order to estimate the unknown angle-of-attack, a sliding mode observer was designed. The convergence capability of the sliding mode observer was analyzed according to the Lyapunov stability theory. A sliding mode controller was designed to drive the missile normal overload output to track its command, based on the output-redefinition approach. In order to confirm the performance of the designed sliding mode observer and controller, a simulation example was carried out for nonlinear missile model. The simulation results show the fast convergence capability of the designed sliding mode observer and controller.

Longitudinal Control for Automated Highway Vehicles

1982 ◽  
Vol 104 (2) ◽  
pp. 180-187 ◽  
Author(s):  
R. J. Caudill ◽  
P. Di Matteo ◽  
S. P. Thomas
Keyword(s):  
Control Systems ◽  
Internal Combustion Engines ◽  
Controller Design ◽  
Vehicle Control ◽  
Combustion Engines ◽  
Longitudinal Control ◽  
Model Reference Control ◽  
Control Concept ◽  
Simulation Results ◽  
Automated Highway

The problem of designing longitudinal control systems for automated highway vehicles powered by internal combustion engines is examined. Careful controller design is required so that the movement of freight and people may be achieved in the same roadway while maintaining stringent safety and operational standards. Individual vehicle control is achieved utilizing a modified proportional-error controller with switching boundaries. Longitudinal control of vehicle strings is based upon the model reference control concept. Analytical and computer simulation results indicate it is feasible to operate mixed vehicle strings.

scholarly journals Synchronization of Unified Chaotic Systems Using Sliding Mode Controller

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Yi-You Hou ◽  
Ben-Yi Liau ◽  
Hsin-Chieh Chen
Keyword(s):  
Secure Communication ◽  
Chaotic Systems ◽  
Controller Design ◽  
Sliding Mode ◽  
Problem Formulation ◽  
Sliding Mode Controller ◽  
Unified Chaotic System ◽  
Unified Chaotic Systems ◽  
Simulation Results ◽  
Chaotic Secure Communication

This paper presents a method for synchronizing the unified chaotic systems via a sliding mode controller (SMC). The unified chaotic system and problem formulation are described. Two identical unified chaotic systems can be synchronized using the SMC technique. The switching surface and its controller design are developed in detail. Simulation results show the feasibility of a chaotic secure communication system based on the synchronization of the Lorenz circuits via the proposed SMC.

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