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Pneumatic technology and electronic technology combine to make pneumatic servo technology produced a substantial leap. DSP digital signal processor that is known for its high cost , small size , fast speed , etc., greatly expanding the digital signal processing technology in the field of automatic control applications . Currently, DSP-based pneumatic servo technology is mostly limited to the experimental stage , rarely used in the production of industrial automation . For strong nonlinear pneumatic servo system , a low natural frequency , low stiffness and damping characteristics of small , raised pneumatic servo controller software design requirements. To UCO 's DPS2812M development board based hardware , completed the A / D, D / A, Ethernet , EEPROM, LCD monitor, keyboard , FLASH, control algorithms, etc. module programming . Pneumatic servo system is presented for the upper and lower computer and the controller independently control two control modes , the completion of the corresponding controller software development. In the upper and lower machine mode, the upper and lower position machine communication via Ethernet . LABVIEW prepared using the PC program , implemented in the PC setting system parameters and observe the operation of the system function ; using C language development of the next -bit machine procedures, the system controller parameter setting , automatic control and manual control functions. Independent control mode, the controller , the controller was developed using C language procedures realize the keyboard control and LCD display function, so that the controller directly via keyboard control functions can be completed . Build a pneumatic servo controller test bench , using digital PID algorithm , respectively, step, ramp and sinusoidal input signal for the two modes of the controller performance experimental study, experimental results show that the two sets of controller software design are to achieve a more complete control functions, and to achieve a good control effect. Two sets of controller software running time there is a larger surplus function interface can add sophisticated control algorithms.
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