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In feedback measuring system

• indication is fedback via inverse transducer,

•compared with measurand and

•moves on to new steady state till error is reduced to zero.

Feedback control system controls relatively high power through actuator.

Feedback measuring system is drawing fairly low power devices at output (indicators, inverse transducer).

Feedback in measuring system•Improves accuracy in measurement

•Improves Speed of measurement

•Allows remote indication

•Allows noncontact measurement

BUT•Increases complexity of design, operation, size and cost

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12y ago

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