Sequential least-squares estimation and the electrical-network problem

Fundamental relationships existing between the electrical-network problem and least-squares estimation theory are illustrated, and the theorems of least power associated with the equilibrium conditions of physical systems are shown to correspond to the mathematical concepts of least-squares theory. The solution of the electrical-network problem based on Kron´s method of tearing and interconnection is considered, and is shown to incorporate an iterative technique which also forms the basis for sequential least-squares data fitting.