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Design of Data Acquisition and Feedback Control System Based on VB

2013-09-20
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Based on serial communication, a data acquisition and feedback control system was developed using VB6.0. Through two serial ports, the computer can communicate with the lock-in amplifier and the manipulator control circuit at the same time. The system can collect data and call EXCEL tables to automatically record. By analyzing the collected data, the action of the mechanical finger can be adjusted in real time to achieve the effect of intelligent feedback control. The design is economical and reliable, and the system runs stably, which can meet the needs of actual project use. Keywords: Visual Basic; serial communication; read data; MSComm; SR830 Abstract Developed the system of data acquisition and feedback control on the basisof serial communication, the computer can communicate with the DSP lock-in amplifierand the control circuit at the same time from two serial ports. The system can readdata automatically and record the data by calling EXCEL. By real-time analyzing thedata, the program can send command to the control circuit of the manipulator so thatthe fingers can adjust their action. It can reach the result of intelligent feedbackcontrol. It is showed that the scheme is economical and reliable ，the system operatesstable, it can meet the challenge of the project.Key words: Visual Basic; serial communication; read data; MSComm; SR830

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