Abstract
In the precision electro-hydraulic servo control system, grating is commonly used as displacement detecting element. To realize getting the data from the grating displacement sensor and send a command word rapidly, the dynamic link library (DLL) technology is used in this paper, it is that a dynamic link library designed in the Visual C++ (VC) and be call by Visual Basic (VB), thus to achieve rapid data transmission and reduce the difficulty of application of VC programming. Research shows that adopting this technology design can realize fast data acquisition with simple structure and fast data transmission, which can satisfy the precision requirement of the real-time control.
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