| Budget Amount *help |
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2000: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1999: ¥900,000 (Direct Cost: ¥900,000)
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| Research Abstract |
Web tension control system can be regarded as a large-scale system comprising of subsystems, and accordingly there exist strong interactions among them.
Then, this research includes three parts : study on motor drive control systems, analysis of mutual interactions, and study on intelligent control systems for a large-scale system with strong mutual interactions.
Regarding the motor control study, we propose a novel control method of DC motors supplied with dual converters. We employ sliding mode control not to produce torque ripples. In the case of synchronous motor drive, we study on the control methodology for armature currents in terms of dqo-axis. This also contains the study of electromagnetic analysis, providing the base for investigating the motor drive problems.
On the problem of mutual interactions, we evaluate the interactions with the interactions measures that assure sufficient stability condition for subsystems. Among various interaction measures, maximum singular value method may be suitable for the purpose.
The report concludes with the study of intelligent control of a large-scale system, in which we applied the adaptive control method. It is shown that the conventional method requires overlapping decomposition in order to get satisfactory results. We then propose a novel compensator for the adaptive control for ordinary or disjoint decompositions.
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