本文报导了所研制的生长KDP晶体完整的反馈控制系统。它通过在过饱和度测量系统和结晶槽温度控制器之间建立接口。采用这一方法,使新测定的过饱和度值可作为反馈回路的控制变量,从而能连续平稳地调节溶液的温度,使过饱和度保持在程序编制预先设定好的水平。图1示出此系统的方框图。实验室中,生长溶液的温度和电导率的实际测量值被直接馈送到一台Hewlett Packard HP-85型的台式电子计算机上。计算机内存储有由实验测定的数据库,从而能相关测定溶液的浓度与溶液的 This paper reports the complete feedback control system of growing KDP crystal. It works by establishing an interface between the supersaturation measurement system and the crystallization tank temperature controller. With this method, the newly measured supersaturation value can be used as a control variable for the feedback loop to continuously and smoothly adjust the temperature of the solution to maintain supersaturation at programmed levels. Figure 1 shows a block diagram of this system. In the lab, actual measurements of the temperature and conductivity of the growth solution were fed directly to a Hewlett Packard HP-85 desktop computer. The computer memory is stored by the experimental determination of the database, which can be related to the determination of the concentration of the solution and the solution