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2. Specifications
Specifications are formulated in either the time or frequency domain, with simple rules of equivalence between the two.
They concern three aspects:
steady-state accuracy (position and speed errors) ;
speed (response time, bandwidth) ;
the shape of the response (transient regime with little oscillation, flat frequency response curve).
2.1 Time specifications
Any linear system gives a response which is the sum of elementary responses of either first or second order. As the fast modes disappear first, the bulk of the response generally depends on the slowest mode, which can be either first- or second-order. As...
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Specifications
Corrector structure
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