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本文用具有纯滞后的一阶系统作为单容水槽的模型,给出了该系统双位控温的极限(最佳)指标,分析了环境温度干扰和电源波动对控温稳态精度的影响,引出了水槽各参数的测量方法,提出了一系列提高精度的控温方法和具体措施。按照本文提供的指导,我们设计的内加热槽和外加热槽均已超过5/1000℃的控温精度指标,并且外加热槽已长出了宏观完美的较大尺寸的KDP单晶。对被研究的系统本文证明了在稳态控制下加热周期和控温精度的等价性。并根据育晶水槽的控制状态正常情况下只与稳态有微小的偏离这一特性,提出了状态报井的概念。该报井系统具有高精度、无时滞、设备及操作维护极其简单等特点。目前正在试用过程中。
In this paper, the first-order system with pure hysteresis is used as a model of single-capacity sink. The limit (optimum) index of dual-position temperature control is given. The influence of ambient temperature disturbance and power fluctuation on the steady- The measurement methods of various parameters of the sink are introduced, and a series of temperature control methods and concrete measures for improving the precision are put forward. In accordance with the instructions provided in this article, we have designed the internal heating tank and external heating tank have more than 5/1000 ℃ temperature control accuracy index, and the external heating tank has grown macroscopically perfect large size KDP single crystal. For the system studied, this paper proves the equivalence of heating cycle and temperature control accuracy under steady state control. According to the characteristic that the control state of the brook sink is only slightly deviated from the steady state under normal conditions, the concept of condition well is proposed. The reporting system with high precision, no delay, equipment and operation and maintenance is extremely simple and so on. Currently in trial process.