Bernard electric actuators use novel structural components. The servo amplifier adopts a microprocessor system, all control functions can be realized by editing, and it also has a digital communication interface, which has the HART protocol or field bus communication function, and becomes a node in the field bus control system. Some servo amplifiers also use frequency converter technology, which can more effectively control the action of the servo motor. The reducer adopts a novel transmission structure, stable operation, high transmission efficiency, no crawling, and low friction. The position transmitter adopts new technology and new methods, and some adopts Hall-effect sensor, which directly senses the longitudinal or rotational movement of the valve stem, realizing non-contact positioning detection; some adopts a special potentiometer with ball bearings in the potentiometer And a resistive sheet made of special conductive materials; some non-contact rotation angle sensors using magnetoresistance effect.
