1998
DOI: 10.9746/sicetr1965.34.660
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Controller Order Reduction by Model Matching of Frequency Response

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Cited by 7 publications
(9 citation statements)
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“…5 show the stability margins and unit time responses, respectively. The results are compared with those obtained by using an H ∞ controller and its reduced-order I-PD controller [16], which provides the PID gains, K P = 5.338, K I = 12.38, and K D =1.125. These gains are almost the same as those by the proposed method; accordingly, as shown by the table and the figure, the closed-loop properties of the two systems are close to each other.…”
Section: Fig 2 Bode Diagrams Of the Complementary Sensitivity Functionsmentioning
confidence: 98%
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“…5 show the stability margins and unit time responses, respectively. The results are compared with those obtained by using an H ∞ controller and its reduced-order I-PD controller [16], which provides the PID gains, K P = 5.338, K I = 12.38, and K D =1.125. These gains are almost the same as those by the proposed method; accordingly, as shown by the table and the figure, the closed-loop properties of the two systems are close to each other.…”
Section: Fig 2 Bode Diagrams Of the Complementary Sensitivity Functionsmentioning
confidence: 98%
“…Designing an IOS with Q x = 0 2×2 , Q = 150 and R=1, we obtain PID gains as K P = 5.700, K I =12.25, and K D = 1.162. The time constant of the approximate derivative is chosen to be T D = 0.08 s as in [16]. Table IV and Fig.…”
Section: Fig 2 Bode Diagrams Of the Complementary Sensitivity Functionsmentioning
confidence: 99%
“…are easily calculated by the least-squares method (Chida and Shigemasa, 1998). Here, ω k is the number of specified frequencies within the matching frequency band, in which an attempt is made to match the loop-transfer function of the reduced-order system to that of the full-order system.…”
Section: Controller Order Reductionmentioning
confidence: 99%
“…Therefore the order of the controller was reduced based on the method of the frequency response matching of the loop-transfer function proposed by Chida and Shigemasa (1998)…”
Section: Controller Order Reductionmentioning
confidence: 99%
“…If the frequency response of the discretized system agrees with the continuous-time system within the frequency range from ω L to ω H , then the discrete frequency data ω k , which is sampled at N-points within the frequency range, are used, and the following error index function J is introduced [17], [18]:…”
Section: Frequency Matching Conditionmentioning
confidence: 99%