Pneumatic actuators than what are the advantages of electric actuators

In terms of technical performance, the advantage of pneumatic actuator mainly includes the following aspects: ( ） Load is big, can adapt to the application of high torque output. （ ） Quick, quick reaction. （ ） Work, good adaptability to the environment, especially in the inflammable, explosive, more dust, strong magnetic, bad work environment, such as radiation and vibration than hydraulic, electronics, electrical control is superior. （ ） Travel by blocked or stem live when the motor is easy damaged. And the advantage of electric actuators mainly includes: ( ） It has compact structure, small volume. Compared with pneumatic actuator, electric actuator structure is relatively simple, a basic electronic systems including actuator, three-position DPDT switch, fuse and some wires, easy to assemble. （ ） Electric actuator drive source is flexible, can be sent to meet this need, car power and pneumatic actuators need air and compressed drive. （ ） Electric actuator is no danger of 'gas', high reliability, and the air compressibility makes the stability of the pneumatic actuator is a bit poor. （ ） Don't need to all kinds of pneumatic pipeline installation and maintenance. （ ） Can not power that maintain a load, and pneumatic actuator requires constant pressure supply. （ ） Because do not need extra pressure device, electric actuator is more quiet. Usually, if pneumatic actuators in the case of large load, to retrofit silencer. （ ） In pneumatic device usually need to convert electrical signals into the gas signal, and then converted into electrical signal, transmission speed is slow, not used for complex circuit components series too. （ ） Electric actuator to control the accuracy is better. In fact, pneumatic system and electric system are not mutually exclusive. Pneumatic actuators can achieve rapid simple linear circular movement, simple structure, convenient maintenance, at the same time can be used in all kinds of bad working environment, such as explosion-proof requirements, dust, or humidity conditions. But rapidly increase in the force and under the condition of accurate positioning, with servo motor electric drive has the advantage. For accurate, synchronous operation, regulation and the adjustable positioning programming applications, electric drive is the best choice, with closed loop servo positioning controller or stepper motor of electric drive system can supplement the deficiency of pneumatic system.