佐藤 孝雄

The present paper proposes a new design method for a dual-rate system, in which a plant in continuous time is controlled by updating a control input in discrete time, in which the sampling interval of the plant output differs from the update interval of the control input. A dual-rate control law that stabilizes a discrete-time closed-loop system is extended. One of the advantages of such an extension is that the dual-rate control law can be redesigned to be independent of the discrete-time closed-loop system. Consequently, the intersample response can be improved by making it independent of the sampled response using the newly introduced design parameters. The present paper proposes a design method for design parameters to improve the intersample response in the steady state. Numerical examples are presented to confirm the effectiveness of the proposed method.

In this paper, a weigh feeder is controlled by using a self-tuning controller. To make a plant output follow a ramp-type reference input without a steady-state error, we propose a new design method for generalized minimum variance control with a pre-compensator. In order to confirm the effectiveness of the proposed method, experimental results are shown.

一般化予測制御(Generalized Predictive Control; GPC)とサンプル点間の出力値と目標値の誤差を評価関数に組み入れたGPCの両制御手法を磁気ディスク装置のヘッド位置決め制御に適用する．シミュレーション結果より通常のGPCに比べサンプル点間を考慮したGPCは目標値追従特性が優れていることを示す．