Classification of Actuators

(1) Actuators are divided into pneumatic, electric and hydraulic actuators according to the driving energy used.

(2) According to the form of output displacement, there are two types of actuators: angular type and linear type.

(3) According to the law of action, actuators can be divided into three types: switching type, integral type and proportional type.

(4) According to the input control signal, the actuator can be divided into air pressure signal, DC current signal, electrical contact on-off signal, pulse signal and so on.