TITLE

Stochastically switched control systems

AUTHOR(S)
Allison, Andrew; Abbott, Derek
PUB. DATE
March 2000
SOURCE
AIP Conference Proceedings;2000, Vol. 511 Issue 1, p249
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Stability is a global property of a system. It is concerned with the behavior of whole systems over indefinitely long periods of time, for all admissible inputs and uncertainties. Stability and instability are ultimately topological properties. They depend on the topology of the space defined by the equations that govern the system. It follows that that instability is not linear. It is possible to construct a linear combination of two unstable systems which will be stable. The operation of linear combination can be performed using time averaging. The switching can be periodic or stochastic. In the stochastic case, the variance plays an important role. It is possible to drive a system into instability by making the variance sufficiently large. The behavior near the limit of stability is quite complex, even for very simple “toy” systems. The stochastically switched system is not the same as a stationary linear filter, although we show that the power spectral densities of the two systems can appear to be very similar. We show that variation in the strength of a feedback loop is a new mechanism introducing noise into a system. © 2000 American Institute of Physics.
ACCESSION #
6029572

 

Related Articles

  • Integrated control system...  // Power;Jul95, Vol. 139 Issue 7, p64 

    Features the integrated control systems for optimization of plant operation from Babcock & Wilcox Co.

  • Frequency stabilization of an internal mirror He–Ne laser by digital control. Eom, TaeBong; Choi, HyunSeung; Lee, SunKyu // Review of Scientific Instruments;Jan2002, Vol. 73 Issue 1, p221 

    A simple digital control system has been developed for the frequency stabilization of an internal mirror He–Ne laser. The system is based on a microcontroller with embedded BASIC interpreter and various functions such as analog and digital input/output. The new control system is very...

  • Smart boiler specifications. Terranova, Jack; Yurcik, Robert // Consulting-Specifying Engineer;Jul98, Vol. 24 Issue 1, p52 

    Deals with the specification of boilers, boiler controls and pumps for efficiency and flexibility. Components of boiler-plant controls; Goal of control-system design; Focus of control system management. INSETS: Boilers at a glance;A sample boiler specification.

  • Improving relay-based control systems. Pickell, Joe // Electronic Design;10/01/96, Vol. 44 Issue 20, p105 

    Focuses on relay-based control systems. Applications of electromechanical relays in control systems; Limitations of industry-standard relay packages; Factors to consider in designing control systems; Suggestions.

  • New Standard for Control System for Chain Hoists in Public Review.  // Stage Directions;Mar2012, Vol. 25 Issue 3, p6 

    The article reports on PLASA's control system standard, BSR E1.6-4 - 201x, Portable Control of Fixed-Speed Electric Chain Hoists, which is available for public review.

  • Communication terminals feature new protocols.  // Control Engineering;May2002, Vol. 49 Issue 5, p60 

    Introduces the ValvePoint communication and control product from Stonel Corp. in Minnesota. Effectiveness of the automated valve in bus network control system; Availability of the product; Capacity of ValvePoint communication.

  • Dynamics of relaxors. Blinc, Robert; Pirc, Rasˇa; Bobnar, Vid; Gregorovicˇ, Alan // AIP Conference Proceedings;2001, Vol. 582 Issue 1, p97 

    A dynamic spherical random bond-random field (SRBRF) model based on the coupled polar cluster picture is formulated. Assuming stochastic flips of the cluster polarization, the Langevin equations of motion are written down, from which the linear and nonlinear dynamic dielectric permittivities are...

  • Relay innovations.  // Appliance Manufacturer;Oct93, Vol. 41 Issue 10, p36 

    Features relay control systems. Omron Electronics' G6D power switching; SSAC. Inc.'s KRD Series Power Time relay.

  • Fault-tolerant relay driver circuit. Willis, Scott C.; Jones, Mark J. // Electronic Design;10/23/97 Supplement, Vol. 45 Issue 23, p16 

    Focuses on a relay driver circuit, which is often extended in redundant systems by paralleling two transistor switches driven by separate controllers. Compatibility of the circuit in conventional and latching relays.

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics