CAD.5 - Choose Observations and Internal State for Control
CAD.5 - Choose Observations and Internal State for Control Type: Method pattern Status: Stable…
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CAD.5:5 - Archetypal Grounding
In CAD.5 - Choose Observations and Internal State for Control
… Use an impossibility argument such as :5.2–:5.3 when claiming that the available information cannot meet a requirement under any controller in the stated class…
CAD.5:4 - Solution
In CAD.5 - Choose Observations and Internal State for Control
CAD.5:4 - Solution Construct the possible current states from the information actually available at the action time. Determine whether one action, chosen with that information, works for all those states and admits the required continuation. Use failures of…
CAD.5:9 - Consequences
In CAD.5 - Choose Observations and Internal State for Control
CAD.5:9 - Consequences The result connects observation selection to admissible control rather than to an isolated estimator score. It can justify a combination of channels, a retained internal history, a tighter representation, or the removal of unnecessary…
CAD.5:2 - Problem
In CAD.5 - Choose Observations and Internal State for Control
CAD.5:2 - Problem An accurate observation of the past is not an accurate observation of the present. Between sampling and acting, the plant has evolved under known commands and unknown disturbances. Combining the latest values from several channels can…
CAD.5:6 - Bias-Annotation
In CAD.5 - Choose Observations and Internal State for Control
CAD.5:6 - Bias-Annotation The finite model and channel catalog can omit a better physical realization. Sensor-resource prices are contextual, and error or delay bounds need engineering grounds. An exact mathematical result cannot establish those grounds. The…
CAD.5:3 - Forces
In CAD.5 - Choose Observations and Internal State for Control
CAD.5:3 - Forces Force Consequential tension Freshness and completeness A rapid partial observation may constrain the next action more usefully than a delayed complete one; neither dominates without a plant and a task. Prediction and unobserved disturbance…
CAD.5:7 - Conformance Checklist
In CAD.5 - Choose Observations and Internal State for Control
CAD.5:7 - Conformance Checklist The controlled task, action time, initialization and allowed uncertainty are explicit, including the meaning of an actually executed input. Each observation constrains the state at its sample time; admissible sample gaps,…
CAD.5:10 - Rationale
In CAD.5 - Choose Observations and Internal State for Control
CAD.5:10 - Rationale Information matters through distinctions the next action must respect. A measurement can refine an old state while leaving recent disturbances unresolved. Applied-input history makes predictable change available to the controller; it does…
CAD.5:12 - Relations
In CAD.5 - Choose Observations and Internal State for Control
… sufficient internal state and error bounds for the present control problem. CAD.1–4 supply the connected quantitative construction of decomposition, interfaces, tracking bounds and whole control alternatives. Section :4.7 provides the explicit composition:…
CAD.5:1 - Problem frame
In CAD.5 - Choose Observations and Internal State for Control
CAD.5:1 - Problem frame Use this when an engineered controller has to act before a complete, accurate observation is available. A rapid channel may reveal only part of the situation; a more complete channel may describe an earlier state. You need to choose…
CAD.5:4.9 - Make the result executable and reusable
In CAD.5 - Choose Observations and Internal State for Control
CAD.5:4.9 - Make the result executable and reusable Return the selected and rejected complete arrangements with the controlled task, plant and uncertainty conditions, channel meanings and timing, initialization, internal state and update, control law, and the…
CAD.5:11 - SoTA-Echoing
In CAD.5 - Choose Observations and Internal State for Control
CAD.5:11 - SoTA-Echoing The precise question here is how to choose realizable observations and sufficient internal memory for bounded-error sampled control. The method joins state estimation and robust control constructions through their information, timing…
CAD.5:8 - Common Anti-Patterns and How to Avoid Them
In CAD.5 - Choose Observations and Internal State for Control
CAD.5:8 - Common Anti-Patterns and How to Avoid Them Failure Repair Treating the most recently received values as simultaneous current state Retain sample times and propagate their constraints through actual intervening inputs and disturbances. Selecting…
CAD.5:5.2 - Why the individual channels do not suffice
In CAD.5 - Choose Observations and Internal State for Control
CAD.5:5.2 - Why the individual channels do not suffice With F alone, the second coordinate is never observed and does not influence the observed first coordinate. Consider two runs with opposite second-coordinate disturbances and otherwise identical…