| Abstrak |
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This paper is concerned with inherent H2 tracking performance limitations in feedback control systems. We deal first with the single-input and multiple-output (SIMO) linear time-invariant (LTI) discrete-time system and provide the analytical closed-form expression of the best achievable performance. Then we reformulate and resolve the problem in delta domain by means the delta operator, form which we can completely recover the counterpart expression for the continuous-time case by approaching the sampling time zero. In addition, we provide a similar result in sampled-data feedback control systems by using the fast sampling. |
