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@ -319,6 +319,36 @@ complex but deterministic behavior.
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% talk a bit about tools here like FRET. Talk about previous attempts.
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% talk a bit about tools here like FRET. Talk about previous attempts.
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Human control of nuclear power can be divided into three different scopes:
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strategic, operational, and tactical. Strategic control is the high-level and
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long term decision making for the plant. This level has objectives that are
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complex and economic in scale, such as managing labor needs and supply chains to
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optimize sheduled maintenence and downtime. The time scale on this level of
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control is long, often over months or years. The lowest level of control is the
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tactical level. This is the individual control of pumps, turbines, and
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chemistry of the plant. This level of control has already been somewhat
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automated today in nuclear power, and is generally considered 'automatic
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control' when autonomous. These controls are almost always continuous systems,
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and have a direct impact on the physical state of the plant. Tactical control
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objectives are things like maintaining a pressurizer level, maintaining a
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certain core temperature, or adjusting reactivity with a chemical shim. The level of
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control linking these two levels, then, is the operational control scope.
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Operational control is the primary responsibility of human operators today.
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Operational control takes the current strategic objective, and implements
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tactical control objectives to drive the plant towards strategic goals. In this
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way, it is the bridge between high and low level goals. A strategic goal may be
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to perform refueling at a certain time, while the tactical level of the plant
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currently is focused on mainting a certain core temperature. The operational
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level is what issues the shutdown procedure of the plant, using several smaller
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tactical goals along the way to achieve this objective. Thus, the combination of
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the operational and tactical level of the plant fundamentally forms a hybrid
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controller. The tactical level is the continuous evolution of the plant
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according to the control input and control law, while the operational level is a
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discrete state evolution which determines the tactical control law to reach
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different operational states.
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%%%%%%%%%%%% Building continuous controllers
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%%%%%%%%%%%% Building continuous controllers
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% The whole point of a hybrid system is that there are continuous components
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% The whole point of a hybrid system is that there are continuous components
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