The design of analog computer compensated control systems
C. Stephen Bigelow · Transactions of the American Institute of Electrical Engineers Part II Applications and Industry · 1958
The Problem of designing a continuous feedback control system may generally be stated in the following form: Given 1. The characteristics of the plant to be controlled, usually in terms of a transfer function. 2. A set of specifications of the desired characteristics of the over-all system. These specifications may cover such system attributes as transient response, frequency response, steady-state error to particular inputs, certain error constants, etc.