AUTO-CONTROL EXPERIMENTS ON DIDO USING DISCONTINOUS FEEDBACK
Technical Report
·
OSTI ID:4200944
Experiments on auto-controlling the DIDO Reactor are described and the equipment design is discussed in some detail. The experiments are carried out to show the suitability of an on/off type of control for the maintenance of a constant flux level in the presence of noise and constart period during power change. The controlling signals stem from measurement of neutron flux computed to give deviation from demanded power, and period, respectively. These signals are fed to a d-c amplifier with variable deadband whose output is used to control relays, these in turn control the coarse control arms by means of three-phase motors. The system is designed on the basis of locus diagrams, a conventional non-linear technique being used to handle the relay performance. Calculation of the reactor transfer function at high and low power respectively shows that the stability margin is not appreciably affected by the inherent thermodynamic feedback in the reactor core. (auth)
- Research Organization:
- United Kingdom Atomic Energy Authority. Research Group. Atomic Energy Establishment, Winfrith, Dorset, England
- NSA Number:
- NSA-14-011251
- OSTI ID:
- 4200944
- Report Number(s):
- AEEW-R-4
- Country of Publication:
- United Kingdom
- Language:
- English
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