请用英语将下面一段话描述的更加科学严谨：In this work, an adaptive P and PI control strategy is proposed for a solar-driven volumetric methane/steam reforming reactor (SVMSR) with passive thermal management, aiming at stabilizing both the output product components and hydrogen production rate under fluctuating solar radiation conditions. The idea of adaptive control is applied and the adaptation law is established to get the appropriate set-points of controllers by exploring the relationship between solar fluctuating characteristics and appropriate control target. P and PI controllers are coupled with a 2D multi-physical reactor model to achieve the control target. Finally, the adaptation law and P and PI control strategy are tested under actual fluctuating solar radiation. The results show that double controllers under the adaptation law can increase the average hydrogen yield and significantly reduce the fluctuation of hydrogen production rate while maintaining the stability of output product components under fluctuating radiation condition.

在这项研究中，针对具有被动热管理的太阳能驱动体积甲烷/蒸汽改性反应器（SVMSR），提出了一种自适应P和PI控制策略，旨在在太阳辐射条件变化的情况下稳定产品成分和氢产量。采用自适应控制的思想，通过探索太阳波动特征和适当控制目标之间的关系，建立了适应规律，以获得控制器的适当设置点。P和PI控制器与2D多物理反应器模型相结合，以实现控制目标。最后，在实际波动的太阳辐射下测试适应规律和P和PI控制策略。结果表明，在适应规律下的双控制器可以提高平均氢产量，并在保持产品成分的稳定的同时显着减少氢产量的波动。