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一类求解大规模非线性单调方程组的无导数共轭梯度方法 被引量:2
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作者 李艳冉 高静 +2 位作者 曹名圆 姜晓威 白雪 《北华大学学报(自然科学版)》 CAS 2021年第1期15-20,共6页
提出一类求解大规模非线性单调方程组的无导数共轭梯度算法.利用Liu和Feng提出的共轭参数改进技术,对数值性能较优越的RMIL共轭梯度方向进行改进,并引入谱参数,构造新的搜索方向.该方向继承了RMIL共轭梯度法的数值稳定性且满足充分下降... 提出一类求解大规模非线性单调方程组的无导数共轭梯度算法.利用Liu和Feng提出的共轭参数改进技术,对数值性能较优越的RMIL共轭梯度方向进行改进,并引入谱参数,构造新的搜索方向.该方向继承了RMIL共轭梯度法的数值稳定性且满足充分下降性条件.再结合投影技术和无导数线搜索技术,在适当假设条件下,获得算法的全局收敛性证明.数值结果表明,该算法在求解大规模非线性单调方程组时具有明显优势. 展开更多
关键词 无导数技术 非线性单调方程组 投影技术 共轭梯度法
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Development of a novel MLS controller based on embedde d ARM
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作者 李向军 秦波 《Journal of Measurement Science and Instrumentation》 CAS 2013年第2期180-183,共4页
The controller plays an important rol e in microwave landing system(MLS) navigation equipment.The embedded advanced reduced-instruction-set-computing(RISC) machine(ARM) is introduced to de velop a new MLS controller b... The controller plays an important rol e in microwave landing system(MLS) navigation equipment.The embedded advanced reduced-instruction-set-computing(RISC) machine(ARM) is introduced to de velop a new MLS controller based on the functional requirements.A design includ ing hardware and software of an ARM system is given.The hardware design involve s a ARM smallest system and its interface.μC/OS-II,a good real-time operating system(RTOS),is i ntroduced in the software design.The task partitioning and management are also i nvolved.The experimental results demonstrate that the embedded ARM technique is an effective way in the complex multi-task system,and it meets the high inte gration and real-time processing requirements of the navigation equipment. 展开更多
关键词 microwave landing system (MLS) embedded reduced-instruction-set-computing(RISC) advanced RISC machine(ARM) real-time operating system(RTOS) micro operating system (μC/OS)
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