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Matrix expression of finite orthogonal wavelet transform of finite impulse response signal is nmore valuable for theoretical analysis and understanding.However,clear deduction for matrix expression has not been provided yet.In this paper,the formulation to generate the related matrix is put forware and the theorem on the orthogonality of this matrix proved.This effort deploys a basis for more deeper and wider applications in chemical processes. 相似文献
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面向成本的设计(Design For Cost,DFC)是从设计的角度降低全生命周期成本(Life Cycle Cost,LCC)的设计方法。从DFC的角度,通过分析得到家用轿车的设计特征主要有外形尺寸、发动机功率、排量等参数,采用基于特征的神经网络集成方法,通过实例计算表明在概念设计阶段就可以估算其LCC,为降低其LCC奠定了重要基础。在计算BP神经网络权值时分别采用了Levenberg-Marquardt,LM法和遗传算法(Genetic algorithm,GA),对两种方法的计算结果进行了神经网络集成,集成后的结果更好。最后采用类似方法,对家用轿车的部分性能指标(100 km耗油量和车身质量)进行了预测。 相似文献
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基于神经网络的不确定随机非线性时滞系统自适应有界镇定 总被引:1,自引:0,他引:1
针对一类不确定严格反馈随机非线性时滞系统的自适应有界镇定问题,利用神经网络参数化和Backstepping方法,提出一种新的且含较少学习参数的神经网络自适应控制策略,以保证系统半全局随机有界.稳定性分析证明闭环系统的所有误差信号概率意义下有界.仿真结果表明所提出控制器设计方法的有效性. 相似文献
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过程工业中具有能量集成的用水网络优化设计 总被引:5,自引:0,他引:5
Effective utilization of water and energy is the key factor of sustainable development in process industries, and also an important science and technology problem to be solved in systems engineering. In this paper,two new methods of optimal design of water utilization network with energy integration in process industries are presented, that is, stepwise and simultaneous optimization methods. They are suitable for both single contaminant and multi-contaminant systems, and the integration of energy can be carried out in the whole process system, not only limited in water network, so that energy can be utilized effectively. The two methods are illustrated by case study. 相似文献
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改进的自适应模拟退火算法及其在过程综合中的应用 总被引:5,自引:0,他引:5
为有效解决化工过程综合中的MINLP问题,针对连续变量的模拟退火算法搜索慢的缺点,提出了一种改进的自适应模拟退火算法(Adaptive Simulated Algorithms,ASA),采取自适应调整温度和搜索步长两种策略,大大加快搜索速度,提高最优解的质量。实算结果充分体现了所提出算法的优点,并很好地应用于化工过程综合问题。 相似文献