EXPERIMENTAL DETERMINATION OF OPEN-LOOP FREQUENCY RESPONSE CHARACTERISTICS OF DLG-6 CLASS STEAM GENERATOR SYSTEM

Abstract

Open loop frequency response measurements were made of the elements comprising the DLG-6 Class main boiler and its several controls. Bode diagrams were curve fitted and the approximate transfer functions obtained in mathematical form. Results were analyzed both for agreement of open loop transfer functions with continuity of energy and mass theory, and for closed loop conformance with stability criteria. Data indicated that steam boiler systems do not lend themselves readily to high performance control, principally due to large phase lags inherent in the process at low frequencies. The chief offenders in this regard are the forced draft blowers, the heat sink, and the additional integrations in the controllers themselves.

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Document Details

Document Type
Technical Report
Publication Date
Mar 04, 1963
Accession Number
AD0403077

Entities

People

  • J. W. Banham
  • P. H. Zavod

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Flow
  • Closed Loop Systems
  • Control Systems
  • Dead Time
  • Dynamic Response
  • Electronic Equipment
  • Feed Water
  • Frequency Response
  • Fuel Oils
  • Generators
  • Measurement
  • Phase Shift
  • Regulators
  • Resonant Frequency
  • Steady State
  • Steam Generators
  • Transfer Functions

Readers

  • Calculus or Mathematical Analysis
  • Combustion and Flow Dynamics.
  • Electrical Engineering