Controller development for a prototype high-speed low-tension tape transport

Mathur, P.D.; Messner, William C.

doi:10.1109/87.701350

Cited by 64 publications

(32 citation statements)

References 2 publications

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“…Because the radii and inertia of the reels vary slowly during transport, and air entrainment dynamics rapidly and nonlinearly change the spring constants of the system, the dynamics of web transport are both time-varying and nonlinear. A statespace formulation of the MIMO reel-to-reel system with a controller design based on the sequential loop closing (SLC) technique, and tension feedback from strain gauge sensors located in the tape path, is presented in [42]. A control system design obtained via the linear quadratic regulator (LQR) technique, in which a gain-scheduling approach is introduced to cope with the time-varying system dynamics, is proposed in [43].…”

Section: Tape Transportmentioning

confidence: 99%

Control Methods in Data-Storage Systems

Cherubini

Chung

Messner

et al. 2012

IEEE Trans. Contr. Syst. Technol.

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Abstract-The recording performance of data-storage devices, in which write/read elements move relative to a storage medium to reliably store and retrieve information, depends on the capability of servo mechanisms to provide the necessary positioning accuracy. The desired characteristics of servo mechanisms for datastorage systems include robustness against variations of environmental parameters, high resolution, accuracy, stability, and fast response. This paper presents a comprehensive overview of advanced servo-control methods for data storage. The applications are to well-established recording technologies, including magnetic tape and magnetic disk systems as well as CD/DVD/Blue-Ray optical data-storage systems. Moreover, newer holographic and nearfield optical systems and the emerging probe-storage technology are also addressed. Emphasis is given to the potential exhibited by the technologies considered for achieving ultra-high storage capacity, as required by the exploding demand in data-storage capacity for archival systems and massive multimedia data storage.Index Terms-Control systems, hard-disk drive, holographic data storage, optical-disk drive, scanning-probe data storage, servomechanism, tape drive.

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Section: Tape Transportmentioning

confidence: 99%

Control Methods in Data-Storage Systems

Cherubini

Chung

Messner

et al. 2012

IEEE Trans. Contr. Syst. Technol.

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“…The prototypical lumped parameter model of a two-reel tape system is illustrated in Fig. 1 (Franklin et al (1998), Mathur and Messner (1998), Lu (2002), and Baumgart and Pao (2007)). The tape winds from the source reel (the left one) to the take-up reel.…”

Section: Time-varying Web-winding Systemsmentioning

confidence: 99%

Disturbance Rejection in Parameter-varying Web-winding Systems

Zhong

Pao

2008

IFAC Proceedings Volumes

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“…One of the main control objectives in tape systems is to increase as much as possible the tape transport velocity while simultaneously regulating the tension. Some work has been conducted on tension controls in tape systems [1][4] [5] where the plant is assumed to be linear time-invariant (LTI). In [6], adaptive control is investigated to reject tape tension error where the disturbances are considered as either an input or an output disturbance to a LTI system.…”

Section: Introductionmentioning

confidence: 99%

Regulating web tension in tape systems with time-varying radii

Zhong

Pao

2009

2009 American Control Conference

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Abstract-A tape system is time-varying as tape winds from one reel to the other. The variations in reel radii consist of two components: the nominal reel radii change due to tape winding and the reel eccentricities as a result of non-circular reels. These variations introduce disturbances in the tape tension. This paper presents a feedforward control that addresses the time-varying reel radius to regulate the tension. The algorithm is based on the fact that the change of the nominal radius is slow and hence the nominal plant in two consecutive revolutions can be considered as the same. The reel eccentricity disturbance is then repetitive in these two revolutions. We investigate the tension error in the previous revolution and calculate the compensation input that should have cancelled it. The compensation input is interpolated properly and then fed forward to the system in the current revolution. A new compensation input sequence is computed for the immediately following revolution. This computation pattern continues until the end of the tape winding process. Simulation results demonstrate and compare the performance of the proposed algorithm with other recently developed methods.

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Controller development for a prototype high-speed low-tension tape transport

Cited by 64 publications

References 2 publications

Control Methods in Data-Storage Systems

Control Methods in Data-Storage Systems

Disturbance Rejection in Parameter-varying Web-winding Systems

Regulating web tension in tape systems with time-varying radii

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