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Control Systems, IEEE

Issue 4 • Date Aug. 1998

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Displaying Results 1 - 10 of 10
  • 1998 IEEE Fellows

    Publication Year: 1998 , Page(s): 98 - 100
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    Freely Available from IEEE
  • Safety, comfort, and optimal tracking control in AHS applications

    Publication Year: 1998 , Page(s): 50 - 64
    Cited by:  Papers (8)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1652 KB)  

    We propose a self-contained intelligent vehicle controller, called the autonomous vehicle driving system (AVDS), for automatic vehicle driving on a limited-access highway. AVDS is a two-level structure: the top decision level analyzes the traffic situation and determines a driving mode among several basic driving modes, while the bottom level computes the real-time control signal based on the chos... View full abstract»

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  • Challenges of autonomous control

    Publication Year: 1998 , Page(s): 92 - 97
    Cited by:  Papers (32)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1348 KB)  

    The main features of autonomous control systems are determined by the need to solve complex optimization problems in the face of uncertainty, in near real time, and without human intervention. In this article we define autonomous control as a higher level of automatic control. A taxonomy of current control, optimization and estimation paradigms is examined vis-a-vis the challenges of autonomous co... View full abstract»

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  • Iterative feedback tuning: theory and applications

    Publication Year: 1998 , Page(s): 26 - 41
    Cited by:  Papers (147)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1716 KB)  

    We have examined an optimization approach to iterative control design. The important ingredient is that the gradient of the design criterion is computed from measured closed loop data. The approach is thus not model-based. The scheme converges to a stationary point of the design criterion under the assumption of boundedness of the signals in the loop. From a practical viewpoint, the scheme offers ... View full abstract»

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  • Dynamic control system upgrade using the Simplex architecture

    Publication Year: 1998 , Page(s): 72 - 80
    Cited by:  Papers (11)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1112 KB)  

    One of the most attractive features of computer-controlled systems should be the ease with which they can be modified to incorporate improvements and new capabilities. It would be desirable to make the software changes in a safe and reliable fashion while the system is running. The Simplex architecture, a real-time software technology developed at the Carnegie Mellon University Software Engineerin... View full abstract»

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  • Interactive learning for signals, systems, and control

    Publication Year: 1998 , Page(s): 88 - 91
    Cited by:  Papers (8)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (548 KB)  

    Use of the World Wide Web to facilitate learning of basic, theoretical, technical material is described in terms of our experience in developing interactive demonstration and exercise modules focusing on Fourier analysis, convolution, the sampling theorem, and elementary control systems. Early attempts involved multimedia presentations and downloadable MATLAB M-files, or server computations initia... View full abstract»

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  • H2 and H control for MagLev vehicles

    Publication Year: 1998 , Page(s): 18 - 25
    Cited by:  Papers (18)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1840 KB)  

    Many magnetically levitated transport systems have been constructed, tested, and improved. Various magnetic levitation (MagLev) system technologies are being developed, and some of them, including the prototype featured in this article, use electromagnets for vehicle levitation. Vehicle levitation is achieved by controlling the gaps of these electromagnets. The constructed prototype will have inde... View full abstract»

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  • Impact modeling and control for industrial manipulators

    Publication Year: 1998 , Page(s): 65 - 71
    Cited by:  Papers (9)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (764 KB)  

    The impact-force behavior is experimentally studied on a 6-DOF commercial manipulator interacting with a very hard granite surface. It is shown that the elastic-joint robot model proposed by Spong (1987) completely explains frequency and damping of impact-force oscillations, so that oscillations can be totally ascribed to joint compliance, while links behave as rigid bodies. This article shows, th... View full abstract»

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  • Switching control of a pneumatic throttle actuator

    Publication Year: 1998 , Page(s): 81 - 87
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (820 KB)  

    A speed controller's primary input, for an internal combustion engine-based vehicle, is the throttle angle. The most common way to adjust the throttle angle setting is with a pneumatic actuator. When a faster and more accurate throttle response is desired, the pneumatic based system is generally replaced with a stepping motor mounted directly on the throttle plate assembly. For controller design p... View full abstract»

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  • Monitoring tire-road friction using the wheel slip

    Publication Year: 1998 , Page(s): 42 - 49
    Cited by:  Papers (19)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (904 KB)  

    Tire-road friction estimation has become an intense research area as the interest of information technology in vehicles increases. In this work, we follow a model-based approach where the difference in wheel velocities of driven and non-driven wheels is used. The perhaps most important feature is that only existing sensors are needed if the car is supplied with ABS brakes. The goal is to compute c... View full abstract»

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As the official means of communication for the IEEE Control Systems Society, the IEEE Control Systems Magazine publishes interesting, useful, and informative material on all aspects of control system technology for the benefit of control educators, practitioners, and researchers.

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Jonathan P. How
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