A Sampled Data Controller for Processes with Time Delay and Load Disturbances

Meyer, Christoph; Jutan, Arthur

doi:10.1016/s1474-6670(17)64587-7

Cited by 1 publication

(2 citation statements)

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“…To improve the control performance for load disturbances, Meyer and Jutan (1988) have proposed the generalized Dahlin's algorithm for load rejection; the generalized Dahlin controller is:…”

Section: Generalized Dahlin's Algorithmmentioning

confidence: 99%

“…The Smith predictor, a time delay compensation scheme, exhibits very similar poor performance for slow disturbances (Nielsen, 1969;Meyer et al, 1976). Meyer and Jutan (1988) have proposed a generalized Dahlin controller algorithm that improves the unsatisfactory performance of Dahlin's algorithm for slow load disturbances, but for the generalized Dahlin algorithm, a dif cult compromise also has to be made between the set-point tracking performance and the load rejection performance. In reality, set-point changes and load disturbances are both likely to occur.…”

Section: Introductionmentioning

confidence: 99%

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A discrete double-controller scheme for delayed processes with both load and set-point disturbances

Guo

Jutan

2003

Transactions of the Institute of Measurement and Control

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Using a double-controller strategy and a design approach related to Dahlin’s controller, a new sampled data control scheme is presented that is suitable for handling both set-point change and load disturbances. This control scheme has two controllers, a set-point controller and a load controller, which result in the separation of the load response from the set-point response in a closed-loop system. These two controllers can be designed independently to achieve good system performance for both set-point tracking and load rejection. The control scheme is applicable to processes that can be approximated by first-order plus time delay dynamics. For set-point changes, the set-point controller is a generalized Dahlin controller that has an extra tuning parameter TLC and has more ‘exibility and more robustness than Dahlin’s controller. For load disturbances, the load controller is also a generalized Dahlin controller and shows a significant improvement over the performance of Dahlin’s controller. The new double-controller scheme also alleviates a difficult compromise that the generalized Dahlin controller makes between the set-point tracking performance and load rejection performance. A simulation study is used to evaluate the performance of this new double-controller scheme in the presence of noise and model errors, and to compare it to Dahlin’s controller and the generalized Dahlin controller. The results show that the proposed double-controller scheme is superior to both Dahlin’s controller and the generalized Dahlin controller.

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“…To improve the control performance for load disturbances, Meyer and Jutan (1988) have proposed the generalized Dahlin's algorithm for load rejection; the generalized Dahlin controller is:…”

Section: Generalized Dahlin's Algorithmmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%