News

Pneumatic system features (advantages and shortcomings) introduction

Pneumatic system features (advantages and disadvantages)

First, the advantages of pneumatic systems

(1) Applicability Most factories and workshops have a compressed air source in the work area, and mobile compressors can be used in more distant places.

(2) Storage Large-capacity compressed air is easily stored as needed.

(3) Simple design and control The use of pneumatic components is a simple design, so it is easy to control a simpler automatic system. Compared with hydraulic transmissions, pneumatic transmissions react quickly and move quickly, and generally only need to establish the required pressure and speed; therefore, it is particularly suitable for automatic control of the system. Convenient adjustment and control, can form a full pneumatic control loop, or can be combined with electrical and hydraulic to achieve hybrid control.

(4) Selection of motion Pneumatic components are easy to realize linear and rotary motion of stepless speed regulation.

(5) Economy Due to the appropriate price of pneumatic components, the cost of the whole set of equipment is low, and the long life of pneumatic components does not require maintenance, so the maintenance cost is low.

(6) Reliability Pneumatic components have a long working life, so the system has high reliability.

(7) Harsh environment adaptability Compressed air is largely unaffected by high temperature, dust and corrosion, which is beyond the reach of other systems.

(8) Clean environment The pneumatic components are clean and have a special exhaust air treatment method that can be installed in a standard clean workshop.

(9) Safety No fire is caused in a dangerous place. If the system is overloaded, the actuator will only stop or slip. Pneumatic actuators do not heat up.

Second, the shortcomings of pneumatic systems

(1) Since the air has compressibility, the movement is less stable when the load changes.

(2) Due to the low working pressure, it is difficult to obtain a large output force or torque; therefore, the pneumatic transmission is not suitable for heavy-duty systems.

(3) There is a large exhaust noise.

(4) Due to the non-lubricating performance of the air, oil lubrication devices should sometimes be provided in the gas path.

(5) The signal transmission speed in the pneumatic device is limited to the sound speed range, slower than the optical and electrical signals, so it should not be used in applications where the signal transmission speed is very high. At the same time, it is more difficult to remotely control the production process.

(6) The pneumatic system has a leak, which is the loss of energy. A certain amount of external leakage is also allowed. However, leakage should be minimized.

PREVIOUS：Pneumatic components gas state term definitioNEXT：Gas-liquid linkage position control loop intr