Control of safety
Assuming a system S, a generalised control task is characterised so that it can be manipulated with inputs u giving observed out-puts y. The system S is assumed to be described with a state vari-able x, which has the property that by giving its state x0 at time t0 and the system input u(t) from t0 onwards, unambiguously define future outputs y(t) (Zadeh and Desoer, 1963).The state x0 can be perceived as integrating the history of past inputs u(t) for t < t0.
Necessary conditions for successful control can then be given by applying the following general requirements:
– There should be a system model M, which can be used to make
predictions (deterministic or probabilistic) about outcomes that
selected actions would produce.
– The system should be observable, which means that it should be
possible to determine the state of the system.
– The system should be controllable, which means that one
should be able to manipulate (or control) the state of the system
with the available input variables.
– There should be a preference relation, which makes it possible
to separate between desired and non-desired outcomes.
The following discussion is based on the assumption that the
system considered is deterministic, but it can as well be general
Control of safety
Assuming a system S, a generalised control task is characterised so that it can be manipulated with inputs u giving observed out-puts y. The system S is assumed to be described with a state vari-able x, which has the property that by giving its state x0 at time t0 and the system input u(t) from t0 onwards, unambiguously define future outputs y(t) (Zadeh and Desoer, 1963).The state x0 can be perceived as integrating the history of past inputs u(t) for t < t0.
Necessary conditions for successful control can then be given by applying the following general requirements:
– There should be a system model M, which can be used to make
predictions (deterministic or probabilistic) about outcomes that
selected actions would produce.
– The system should be observable, which means that it should be
possible to determine the state of the system.
– The system should be controllable, which means that one
should be able to manipulate (or control) the state of the system
with the available input variables.
– There should be a preference relation, which makes it possible
to separate between desired and non-desired outcomes.
The following discussion is based on the assumption that the
system considered is deterministic, but it can as well be general
การแปล กรุณารอสักครู่..
