Emphasizing applications that require both rapid and precise control of position, speed, and torque, Chiasson (electrical and computer engineering, U. of Tennessee) explains the modeling and control of electric machines, including direct current (DC) machines, but primarily focusing on alternating current (AC) machines consisting of the induction motor, the permanent magnet synchronous motor, and the brushless DC motor. He derives the mathematical models of the machines and then describes how they are used to design control algorithms for high performance. The modeling is based on differential equations and (with the exception of a sinusoidal steady-state analysis of the induction motor) little attention is given to classical equivalent circuits.