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In 1922, the ( ) installed an automatic steering

system that used the elements of compensation and

adaptive control to improve performance.

In

1877, the topic for the Adams Prize was ‘‘( ).’’

In ( , ) using a suggestion from William Kingdon

Clifford that was ignored earlier by Maxwell, was able to

extend the stability criterion to fifth-order systems.

In

( , ) published the stability criterion

for a third-order system based on the coefficients of the

differential equation.

( ) is

that it cannot compensate for any disturbances that add to the

controller’s driving signal

It

starts with a subsystem called an input transducer, which

converts the form of the input to that used by the controller. The

controller drives a process or a plant.

compensates for disturbances by

measuring the output response, feeding that measurement back

through a feedback path, and comparing that response to the

input at the summing junction.

systems that perform the previously described

measurement and correction are called

Systems that do not have this property of

measurement and correction are called

the process by which a system’s performance is

determined.