The derivation and interpretation of control coefficients

Abstract

1. Equations for control coefficients are derived by using a method that generates all the control coefficients for a system in a single procedure. This requires solving fewer simultaneous equations than an equivalent method based on ‘control theorems’. 2. The interpretation of control coefficients is discussed: in particular, it is shown that these functions are unsatisfactory as measures of ‘control’ and are perhaps best used as a means of testing control theories (models).