Several companies , including ASEA Brown Boveri, Siemens , Endress+Hauser , and Emerson , lead the industrial automation sector . ASEA Brown Boveri specializes in robotics and motion control , while Siemens https://kingbookmark.com/story22022249/abb-versus-electrical-siemens-versus-endress-hauser-versus-emerson-a-comparison-at-leading-automation-firms