在串口通訊的基礎上利用VB6.0 開發了數據采集及反饋控制系統，通過兩個串口，計
算機能夠同時與鎖相放大器和機械手控制電路進行通信。系統可以對數據進行采集并調用EXCEL 表格自動記錄，通過對采集到的數據進行分析，實時調整機械手指的動作，達到智能化反饋控制的效果。該設計經濟可靠，系統運行穩定，可以滿足實際項目使用的需要。
關鍵詞： Visual Basic；串行通信；數據采集；MSComm；SR830
Abstract Developed the system of data acquisition and feedback control on the basis
of serial communication, the computer can communicate with the DSP lock-in amplifier
and the control circuit at the same time from two serial ports. The system can read
data automatically and record the data by calling EXCEL. By real-time analyzing the
data, the program can send command to the control circuit of the manipulator so that
the fingers can adjust their action. It can reach the result of intelligent feedback
control. It is showed that the scheme is economical and reliable ，the system operates
stable, it can meet the challenge of the project.
Key words: Visual Basic; serial communication; read data; MSComm; SR830