1950～

1950

Automation Age

Better automation control

    • Early minersha motors
    • DC Servo “Minasya Motor” Assembly Line
    • H-line motors
    • Dedicated production line for H-line motors
    01

    The Birth of the Revolutionary Minertia Motor

    At that time, DC motors were required for more agile and precise automatic control instead of the simple variable speed AC motors of VS motors. For this reason, we partnered with the Swiss company Brown, Boveri & Cie (now ABB) and received the system technology. After the partnership, the company responded to the severe accuracy requirements of several centimeters of precision error in the stopping position of shaft hoists in coal mines. In the steel industry, it also started to provide integrated control equipment for the feedstock yards, automatic feedstock charging equipment for blast furnaces, and motors for lump-rolling mills. This introduced technology has contributed to coal mining and steel production, as well as paper machine systems, increasing the number of units delivered in Japan and overseas.

    02

    Focusing on Feedback and Sequence Control

    After the 1950s Korean War, we looked at the direction of technology as automation, and focused on adding full-scale variable speed to the power that would become the limbs of automation (feedback control) and control that would become the brains of automation (sequence control). This double-sided control has been used in various industrial equipment such as coal, steel and cement, and has gradually grown in size and evolved into overall process automation. It also supported the automation of equipment such as machine tools and conveyance machines, which later became the basis for factory automation.

    • VS Motor (VBOMN), which became synonymous with variable speed motors (manufactured from 1963 to 1968)
    • The first VS motor 5HP 200V (1953)Preserved by Yawata Electric Precision Industry Co.
    03

    The Advent of Variable-Speed VS Motors

    In those days, the constant speed operation of motors, while having outstanding technology, had a weakness for variable-speed operation, and the advent of a full-scale variable-speed operation that could accommodate the advancement of industrial equipment was in demand. Against this backdrop, the VS motor, an AC variable-speed motor with automatic feedback-type control, easy maintenance and little dependence on the operating environment, and remote control, was developed. VS motors have attracted attention from industry and have been used in printing presses, hoists and cranes, and diesel engines on work vessels. Large-sized VS motors continued to hold the top market share and became the mainstay product for exporting, with technology being supplied overseas.

    • Electrical equipment for shaft hoists
    04

    Introduction of DC Machine Technology for Automatic Control

    At that time, DC motors were required for more agile and precise automatic control instead of the simple variable speed AC motors of VS motors. For this reason, we partnered with the Swiss company Braunbobelli (now ABB) and received the system technology. After the partnership, the company responded to the severe accuracy requirements of several centimeters of precision error in the stopping position of shaft hoists in coal mines. In the steel industry, it also started to provide integrated control equipment for the feedstock yards, automatic feedstock charging equipment for blast furnaces, and motors for lump-rolling mills. This introduced technology has contributed to coal mining and steel production, as well as paper machine systems, increasing the number of units delivered in Japan and overseas.

Milestones
Yaskawa Principles
History

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