调速技术在生产过程控制中的应用已受到产业界的重视。本文介绍了仪表用气源装置供气流量调节的传统方法及其优缺点，在此基础上成功地将山肯（ＳＡＮＫＥＮ）高性能电动机变频调速器引入到气源装置的供气流量调节中，并采用微机控制，收到了较好的控制效果，经济效益明显 Speed ​​control technology in the production process control applications have been the industry’s attention. This paper introduces the traditional method and advantages and disadvantages of air flow adjustment for instrument air supply unit. On this basis, the successful introduction of SANKEN high performance motor frequency conversion speed regulator into the air supply flow adjustment , And the use of computer control, received a good control effect, significant economic benefits