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Browsing by Author "Liao, Tien-Yu"

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    GPS navigation based autonomous driving system design for intelligent vehicles
    (2007)
    Wu, Bing-Fei
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    Lee, Tsu-Tian
    ;
    Chang, Hsin-Han
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    Jiang, Jhong-Jie
    ;
    Lien, Cheng-Nan
    The main objective of this paper is to design and implement a real-time autonomous navigation system for intelligent vehicles by integrating a real-time kinematics differential global position system (RTK-DGPS) and a laser range finder. Firstly, a fuzzy logic algorithm for target position tracking is proposed to achieve the human driving concept. In addition, an actuator is equipped in the experimental vehicle TAIWAN iTS-1 so that the steering wheel can be controlled to let the vehicle follows a desired trajectory in digital maps. A laser range finder is used to detect obstacles in front of the vehicle for warning announcement and collision avoidance. A human machine interface is also built up to provide information from sensors. The performance and accuracy of the proposed system is verified by real-time experimental results.
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    Robust stability analysis of a fuzzy vehicle lateral control system using describing function method
    (2007)
    Perng, Jau-Woei
    ;
    Wu, Bing-Fei
    ;
    Liao, Tien-Yu
    ;
    Lee, Tsu-Tian
    ;
    電控工程研究所
    In this paper, the robust stability analysis of a fuzzy vehicle lateral system with perturbed parameters is presented. Firstly, the fuzzy controller can be linearized by utilizing the describing function method with experiments. After the describing function is obtained, the stability analysis of the vehicle lateral control system with the variations of velocity and friction is then carried out by the use of parameter plane method. Afterward some limit cycle loci caused by the fuzzy controller can be easily pointed out in the parameter plane. Computer simulation shows the efficiency of this approach.
  • Thumbnail Image
    Item type:Item,
    Robust stability analysis of a fuzzy vehicle lateral control system using describing function method
    (2007-01-01)
    Perng, Jau-Woei
    ;
    Wu, Bing-Fei
    ;
    Liao, Tien-Yu
    ;
    Lee, Tsu-Tian
    ;
    電控工程研究所
    In this paper, the robust stability analysis of a fuzzy vehicle lateral system with perturbed parameters is presented. Firstly, the fuzzy controller can be linearized by utilizing the describing function method with experiments. After the describing function is obtained, the stability analysis of the vehicle lateral control system with the variations of velocity and friction is then carried out by the use of parameter plane method. Afterward some limit cycle loci caused by the fuzzy controller can be easily pointed out in the parameter plane. Computer simulation shows the efficiency of this approach.
  • Thumbnail Image
    Item type:Item,
    Robust stability analysis of a fuzzy vehicle lateral control system using describing function method
    (2007)
    Perng, Jau-Woei
    ;
    Wu, Bing-Fei
    ;
    Liao, Tien-Yu
    ;
    Lee, Tsu-Tian
    ;
    電控工程研究所
    In this paper, the robust stability analysis of a fuzzy vehicle lateral system with perturbed parameters is presented. Firstly, the fuzzy controller can be linearized by utilizing the describing function method with experiments. After the describing function is obtained, the stability analysis of the vehicle lateral control system with the variations of velocity and friction is then carried out by the use of parameter plane method. Afterward some limit cycle loci caused by the fuzzy controller can be easily pointed out in the parameter plane. Computer simulation shows the efficiency of this approach.