This text investigates the operational principles, design requirements, and application criteria for permanent-magnet and brushless DC motors in modern industrial systems. Dr. Takashi Kenjo, a recognized authority in small motor technology, synthesizes technical specifications and circuit design methodologies to assist engineers in selecting appropriate components for robotics and computer peripherals. The book establishes a framework for understanding the transition from conventional motor designs to modern brushless configurations through detailed structural analysis and control theory.

Experts and practitioners frequently cite this work as a foundational technical reference for understanding the mechanics of small-scale motor systems. The text is noted for its clear, instructional approach to complex electrical engineering concepts, making it a standard resource for students and professionals in the field of robotics.