The decoupling internal model control (DIMC) technique is modified to achieve triangular decoupling for a class of two-input, two-output systems with delays. The closed-loop transfer function matrix that guarantees st...
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The decoupling internal model control (DIMC) technique is modified to achieve triangular decoupling for a class of two-input, two-output systems with delays. The closed-loop transfer function matrix that guarantees stability and triangular decoupling within the IMC framework is mathematically developed, and the corresponding centralized decoupling internal model controller calculated for systems with delays and right-half-plane zeros. The shifting of inverse responses and interactions is achieved to a single least-desired output so that for non-minimum-phase (NMP) two-input, two-output (TITO) systems with delays, one output has some delay but has no interacting behaviour or inverse response behaviour, while the less-desired output has substantial interaction and inverse response behaviour, with asymptotic tracking of setpoints for both outputs. A simulation example shows the effectiveness of the proposed method. Copyright (C) 2020 The Authors.
The decoupling internal model control (DIMC) technique is modified to achieve triangular decoupling for a class of two-input, two-output systems with delays. The closed-loop transfer function matrix that guarantees st...
详细信息
The decoupling internal model control (DIMC) technique is modified to achieve triangular decoupling for a class of two-input, two-output systems with delays. The closed-loop transfer function matrix that guarantees stability and triangular decoupling within the IMC framework is mathematically developed, and the corresponding centralized decoupling internal model controller calculated for systems with delays and right-half-plane zeros. The shifting of inverse responses and interactions is achieved to a single least-desired output so that for non-minimum-phase (NMP) two-input, two-output (TITO) systems with delays, one output has some delay but has no interacting behaviour or inverse response behaviour, while the less-desired output has substantial interaction and inverse response behaviour, with asymptotic tracking of setpoints for both outputs. A simulation example shows the effectiveness of the proposed method.
There are many internalmodelcontrol methods for the system with non-minimum phase zeros and time delays, but the decoupling result is not satisfied and the controller design is complicated. In order to solve these p...
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ISBN:
(纸本)9781424447947
There are many internalmodelcontrol methods for the system with non-minimum phase zeros and time delays, but the decoupling result is not satisfied and the controller design is complicated. In order to solve these problems, a new decoupling IMC method is proposed. Non-minimum phase zero problem can be solved easily and if there are several different time delays in the system, the model of the system needn't to be converted to approximated model. As to parameter optimization of filter, the improved ISE index and NLJ algorithm were adopted to optimize the parameter of the filter. The simulation results have illustrated that this new internalmodelcontrol method and parameter optimization method are simple and effective, and the decoupling result of two input-two output system is satisfied and has good tracking characteristics and robustness.
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