The main advantages of electric actuators are the high stability and the stable thrust that users can apply. The maximum thrust produced by the actuator can reach 225000kgf. Only hydraulic actuators can reach such a large thrust, but the cost of hydraulic actuators is higher than that of electric Much higher. The anti-deflection ability of the electric actuator is very good, the output thrust or torque is basically stable, can well defeat the unbalanced force of the medium, and achieve precise control of the process parameters, so the control accuracy is more than that of the pneumatic actuator. high. If it is equipped with a servo amplifier, the exchange of positive and negative effects can be easily completed, and the signal-off valve position can be easily set. When something goes wrong, it must stay in the original position. This is something that a pneumatic actuator cannot do. It is necessary to use a set of combined protection system to complete the reservation.
The shortcomings of electric actuators are mainly complicated structure and simpler faults, and because of its complexity, the requirements for the skills of field protection personnel are relatively higher; the motor works to generate heat, assuming that the conditioning is too frequent, simply constitute the motor Overheating, resulting in thermal protection, will also increase the wear of the reduction gear; in addition, the work is slower. It takes a longer time to output a signal from the conditioner to the corresponding position of the conditioning valve in response. This is It is not as good as pneumatic and hydraulic actuators.
