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The technique of applying state variable feedback methods to an existing control system is presented. The system response is improved through a redesign of the feedback elements of the original system having predetermined the desired closed-loop response. This improvement in response results from a reformulation of the system description in a state variable format leading to the feedback gains necessary to yield the desired response. The inaccessibility of some of the state variables required the additional design of shaping networks in order to satisfy the desired specifications. Frequency response and transient response test data taken from an analog model of the system illustrate very clearly the improvement in each response.
Aerospace and Electronic Systems, IEEE Transactions on (Volume:AES-5 , Issue: 6 )
Date of Publication: Nov. 1969