Design of Seeking Control Based on Two-Degree-of-Freedom Controller Using Frequency Shaped Final-State Control

Kang, Hyun Jae; Lee, Choong Woo; Chung, Chung Choo; Lee, Ho Seong

doi:10.3182/20080706-5-kr-1001.00308

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Feedforward Control System1

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Cited by 6 publications

(2 citation statements)

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“…The reference x r , shown in Fig. 8, was determined to minimize residual vibration and to avoid phase difference between the position and velocity references (Kang et al [2008]).…”

Section: Application Resultsmentioning

confidence: 99%

State Space Disturbance Compensation for Robust Fast Servo Track Writer Seek Control*

Lee

Kang

Chung

2011

IFAC Proceedings Volumes

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“…The reference x r , shown in Fig. 8, was determined to minimize residual vibration and to avoid phase difference between the position and velocity references (Kang et al [2008]).…”

Section: Application Resultsmentioning

confidence: 99%

State Space Disturbance Compensation for Robust Fast Servo Track Writer Seek Control*

Lee

Kang

Chung

2011

IFAC Proceedings Volumes

Self Cite

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“…The acceleration input F a (n) is generated with the sampled-data polynomial shown in Eq. (8). To evaluate the relationship between the mechanical resonance frequency and the sampling frequency of the ZOH, we used three acceleration inputs whose target seek spans P t were 500 tracks.…”

Section: Feedforward Control Systemmentioning

confidence: 99%

Analysis of Residual Vibrations beyond the Nyquist Frequency in Sampled-Data Positioning Control System

Atsumi

Messner

2011

JSDD

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Intersampling vibrations of a sampled-data positioning control system may lead to degrade the performance and reliability of mechatronic products. Such vibrations are caused by mechanical resonances with frequencies beyond the Nyquist frequency of the control system. To address this problem, we analyzed residual vibrations using a shock response spectrum (SRS) analysis employed for characterizing transient characteristics of mechanical resonances. We showed that the acceleration input in sampleddata control systems excited the mechanical resonance near the sampling frequency during a period of settling to a target position. These phenomena were confirmed through experiments using the actual head-positioning system of the hard disk drive. Consequently the vibrations caused by the mechanical resonances around the sampling frequency were not only the difficult to observe but readily excited by the control input. Therefore, the sampled-data positioning control system must be designed such that the sampling frequency is away from mechanical resonances.

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Torque-Modulated backstepping control for two-dimensional electromagnetic scanners

Lee

Jeong²,

Chungo

2017

2017 IEEE Conference on Control Technology and Applications (CCTA)

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Design of Seeking Control Based on Two-Degree-of-Freedom Controller Using Frequency Shaped Final-State Control

Cited by 6 publications

References 10 publications

State Space Disturbance Compensation for Robust Fast Servo Track Writer Seek Control*

State Space Disturbance Compensation for Robust Fast Servo Track Writer Seek Control*

Analysis of Residual Vibrations beyond the Nyquist Frequency in Sampled-Data Positioning Control System

Torque-Modulated backstepping control for two-dimensional electromagnetic scanners

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