The Cancellation of Random Disturbances in Automatic Control Systems

Author: Hartlieb, Robert Joseph

Year: 1956

Degree: Dissertation (Ph.D.)

Advisor: Tsien, Hsue Shen

Committee Member: Unknown, Unknown

Option: Aeronautics; Electrical Engineering

DOI: 10.7907/SCBZ-3H18

Abstract

A disturbance-cancelling feedback transfer function is proposed in a preliminary study for linear systems with constant coefficients. This idea is then experimentally demonstrated.

In the main theory for more general systems, expressions are obtained for a computer which generates a cancelling input from measurements of the disturbances. The cases where there are fewer measurements than disturbances and also noisy measurements are treated. Three schemes and a basis for comparison are given. An example is calculated.

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