http://iet.metastore.ingenta.com
1887

Discrete control for a computer hard disk by using a fractional order hold device

Discrete control for a computer hard disk by using a fractional order hold device

For access to this article, please select a purchase option:

Buy article PDF
$19.95
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Name:*
Email:*
Your details
Name:*
Email:*
Department:*
Why are you recommending this title?
Select reason:
 
 
 
 
 
IEE Proceedings - Control Theory and Applications — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

It is well known that the type of hold circuit used in a digital control scheme critically influences the position of the discrete-time zeros. Most digital control systems use a zero-order hold (ZOH). Nevertheless, there are more convenient alternatives to the use of a ZOH signal reconstruction device in certain digital control problems. A fractional order hold (FROH) circuit is proposed in this paper in order to manage a computer hard disk read–write head described as a second order system. Significant improvements in the transient performance of the closed-loop system are obtained with respect to the use of a ZOH when using a properly adjusted FROH device.

References

    1. 1)
      • R.H. MIDDLETON . Trade-offs in linear control system design. Automatica , 2 , 281 - 292
    2. 2)
      • K.J. Åström , B. Wittenmark . (1997) Computer controlled systems. Theory and design.
    3. 3)
      • K.J. Astrom , B. Wittenmark . (1995) Adaptive control.
    4. 4)
      • D.W. CLARKE . Self-tuning control of nonminimum-phase systems. Automatica , 5 , 501 - 517
    5. 5)
      • M. M'SAAD , R. ORTEGA , I.D. LANDAU . Adaptive controllers for discrete-time systems with arbitrary zeros: an overview. Automatica , 4 , 113 - 423
    6. 6)
      • K.J. Åstrom , P. Hagander , J. Sternby . Zeros of sampled systems. Automatica , 1 , 31 - 38
    7. 7)
      • M.J. BLACHUTA . On zeros of pulse transfer function. IEEE Trans. Autom. Control , 6 , 1229 - 1234
    8. 8)
      • T. HAGIWARA , T. YUASA , M. ARAKI . Stability of the limiting zeros of sampled-data systems with Zero- and First-Order Holds. Int. J. Control , 6 , 1325 - 1346
    9. 9)
      • K.M. PASSINO , P.J. ANTSAKLIS . Inverse stable sampled low-pass systems. Int. J. Control , 6 , 1905 - 1913
    10. 10)
      • M. ISHITOBI . Stability of zeros of sampled systems with fractional order hold. IEE Proc. Control Theory Appl. , 3 , 296 - 300
    11. 11)
      • R. BARCENA , M. DE LA SEN , I. SAGASTABEITIA . Improving the stability properties of the zeros of sampled systems with Fractional order hold. IEE Proc., Control Theory Appl. , 4 , 456 - 464
    12. 12)
      • G.F. Franklin , J.D. Powell , M. Workman . (1997) Digital control of dynamic systems.
    13. 13)
      • B.C. Kuo . (1980) Digital control systems.
    14. 14)
      • ISHITOBI, M., ZHU, Q: `Zeros of sampled systems with fractional order hold implemented by zero order hold', IEEE International Conference on Intelligent processing systems, 1997, New York, 1, p. 698–702.
    15. 15)
      • H.K. SUNG , S. HARA . Properties of sensitivity and complementary sensitivity functions singles input–output digital control systems. Int. J. Control , 6 , 2429 - 2439
    16. 16)
      • K.J. ASTRÖM , B. WITTENMARK . Self-tuning controllers based on pole-zero placement. IEE Proc. D, Control Theory and Appl. , 3 , 120 - 130
    17. 17)
      • R. Dorf . (1998) Modern control systems.
http://iet.metastore.ingenta.com/content/journals/10.1049/ip-cta_20010196
Loading

Related content

content/journals/10.1049/ip-cta_20010196
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading
This is a required field
Please enter a valid email address