The "Proterial Linear Motor", equipped with high performance rare earth magnets, is a direct-current linear motor. Use of the moving coil method, which keeps the weight of the moving element to an absolute minimum, enables high-speed access. In addition, a control system for high-speed, full-closed-loop structures ensures optimal engine performance. Proterial linear motors, based on total system design and production, and as key units of systems, are rapidly achieving new levels of performance in response to increasingly diversified customer needs.