• 제목/요약/키워드: Systems engineering

검색결과 44,573건 처리시간 0.063초

A TERVO SYSTEM WITH RECUNANT ACYUATORS

  • Choi, Gang-Hyeon;Kobayashi, Hisato;Nakamura, Hideo
    • 제어로봇시스템학회:학술대회논문집
    • /
    • 제어로봇시스템학회 1995년도 Proceedings of the Korea Automation Control Conference, 10th (KACC); Seoul, Korea; 23-25 Oct. 1995
    • /
    • pp.219-222
    • /
    • 1995
  • This paper presents a control law of multiple actuation servo systems. Multiple actuation systems have an ability to solve some difficult engineering problems; Coulomb friction, backlash, and disturbance. This fact is shown by basic experiments as well as theoretical analysis. The proposed control strategy remarkably improves the performance comparing with conventional single actuation systems.

  • PDF

An Intelligent Management System for Evaluating Science Research Projects

  • Chen, Zhi-Yu;Chen, Shi-Quan;Wu, Jin-Pei
    • Industrial Engineering and Management Systems
    • /
    • 제4권1호
    • /
    • pp.109-116
    • /
    • 2005
  • Proposed in this paper is an intelligent management system for evaluating science research projects based on fuzzy neural networks with genetic algorithms. This system was planned, designed and tested employing theories and approaches of software engineering. This system was then applied to evaluate science research projects of the Natural Science Foundation of Guangdong Province, People’s Republic of China. The outcome / results shows the feasibility and validity of the system and its possible application to other intelligent management systems.

A review on sensors and systems in structural health monitoring: current issues and challenges

  • Hannan, Mahammad A.;Hassan, Kamrul;Jern, Ker Pin
    • Smart Structures and Systems
    • /
    • 제22권5호
    • /
    • pp.509-525
    • /
    • 2018
  • Sensors and systems in Civionics technology play an important role for continuously facilitating real-time structure monitoring systems by detecting and locating damage to or degradation of structures. An advanced materials, design processes, long-term sensing ability of sensors, electromagnetic interference, sensor placement techniques, data acquisition and computation, temperature, harsh environments, and energy consumption are important issues related to sensors for structural health monitoring (SHM). This paper provides a comprehensive survey of various sensor technologies, sensor classes and sensor networks in Civionics research for existing SHM systems. The detailed classification of sensor categories, applications, networking features, ranges, sizes and energy consumptions are investigated, summarized, and tabulated along with corresponding key references. The current challenges facing typical sensors in Civionics research are illustrated with a brief discussion on the progress of SHM in future applications. The purpose of this review is to discuss all the types of sensors and systems used in SHM research to provide a sufficient background on the challenges and problems in optimizing design techniques and understanding infrastructure performance, behavior and current condition. It is observed that the most important factors determining the quality of sensors and systems and their reliability are the long-term sensing ability, data rate, types of processors, size, power consumption, operation frequency, etc. This review will hopefully lead to increased efforts toward the development of low-powered, highly efficient, high data rate, reliable sensors and systems for SHM.

불확실한 초기치를 갖는 반복시스템에 대한 유한구간 추종제어 (Finite-horizon Tracking Control for Repetitive Systems with Uncertain Initial Condition)

  • 최윤종;윤성욱;이창희;조재영;박부견
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 2007년도 심포지엄 논문집 정보 및 제어부문
    • /
    • pp.297-298
    • /
    • 2007
  • Repetitive systems stand for a kind of systems that perform a simple task on a fixed pattern repetitively and are widely spread in industrial fields. Hence, those systems have been of much interests by many researchers, especially in the field of iterative learning control (ILC). In this paper, we propose a finite-horizon tracking control scheme for linear time-varying repetitive systems with uncertain initial conditions. The scheme is derived both analytically and numerically for state-feedback systems and only numerically for output-feedback systems. Then, it is extended to stable systems with input constraints. All numerical schemes are developed in the forms of linear matrix inequalities. A distinguished feature of the proposed scheme from the existing iterative learning control is that the scheme guarantees the tracking performance exactly even under uncertain initial conditions. The simulation results demonstrate the good performance of the proposed scheme.

  • PDF