Improvement in Gain Margin for a Dual-Rate System
説明
This paper proposes a new method for designing a digital control system, in which a plant in continuous time is controlled by updating a control input in discrete time. The controlled system is a dual-rate system in which the sampling period is restricted to be double the control period. Hence, a fast-rate control system cannot be obtained, and to obtain a single-rate control system, a designed system is a slow-rate control system, where the control input is updated at slow-rate (2Ts) and the plant output is sampled at slowrate (2Ts). In this paper, the slow-rate single-rate system is a dual-rate system, where the control input is updated at fast-rate (Ts) and the plant output is sampled at slow-rate (2Ts). Further, the dual-rate system is redesigned for improving stability margin independent of the output response of the pre-designed slow-rate single-rate system. Numerical examples demonstrate the effectiveness of the proposed method.
収録刊行物
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- 2009 Fourth International Conference on Innovative Computing, Information and Control (ICICIC)
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2009 Fourth International Conference on Innovative Computing, Information and Control (ICICIC) 203-206, 2009-12-01
IEEE