This paper designed a multivariable load Optical Preview Control (OPC) system for a thermal power unit, and discussed the effect of preview step number on control performance of the load OPC system.

文章针对单元机组负荷控制的特点，采用最优预见控制（OPC）策略设计了基于多变量预见控制原理的单元机组负荷最优预见控制系统，并讨论了预见步数对控制品质的影响。

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The characteristics, basic circuit, and working wave pattern of transistor type optical coupler and its function in electronic control unit of hydraulic discharging machine were introduced.

介绍了晶闸管光耦合器的特性、基本电路、工作波形及其在液压下料机电子控制装置中的作用。

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