Probably earliest servomechanism was built in 1867 by G. Forrester and Co; engine was actuated by "error" between position of rudder and position of wheel; typical modern electrohydraulic steering gear; automatic helmsmen; ship stabilizers.
Servo mechanisms for ships
Engineering
Engineering ; 174 , n 4531
1952
3 pages
Aufsatz (Zeitschrift)
Englisch
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