Abstract: In order to eliminate the interference signal of the complex pneumatic control system,a signal processing scheme is proposed.According to the diagram of full function,the type of the signal is judged.And then,using one-way roller lever valve to change recurring long signal into short signal,then using the reproducing signal and the sending condition signal to eliminate the reproduction signal interference;at last,using the double pressure valve to eliminate the signal interference.The experimental results show that the proposed method is feasible and effective.

Key words: air control system, interference signal, pneumatic circuit