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基于模糊短反馈PID控制的粉末包装计量控制系统 被引量:8
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作者 杨晓 董娜 王国柱 《包装工程》 CAS 北大核心 2019年第9期148-153,共6页
目的粉末包装计量控制系统具有非线性等特点,传统的PID控制越来越无法满足工业产品包装的性能要求,为了提高包装机计量控制系统的速度、精度以及稳定性等,以实现快速精准的产品包装。方法在现有控制理论的基础上,结合模糊控制理论和生... 目的粉末包装计量控制系统具有非线性等特点,传统的PID控制越来越无法满足工业产品包装的性能要求,为了提高包装机计量控制系统的速度、精度以及稳定性等,以实现快速精准的产品包装。方法在现有控制理论的基础上,结合模糊控制理论和生物神经内分泌腺体激素调节的原理,提出一种基于模糊短反馈PID控制的粉末包装计量控制系统。模糊控制的引入可以实现对传统PID控制器参数的在线调整;短反馈算法的引入可以使模糊PID控制更加精确、快速,并将该新型控制算法应用到粉末包装定量控制系统中与传统控制算法进行对比。结果通过Matlab中的Simulink工具箱搭建模糊短反馈PID控制的粉末包装计量控制系统仿真平台,并与传统的PID控制和模糊PID控制进行了比较可知,该系统具有响应速度快、抗干扰能力强等优良的性能。结论通过仿真验证可知,模糊短反馈PID控制的粉末包装计量控制系统具有稳定性好、响应快等良好的性能指标,同时具备一定的抗干扰能力。 展开更多
关键词 粉末包装 计量 传统PID控制 模糊控制 生物神经内分泌 短反馈算法 MATLAB
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BIO-INSPIRED SELF-ADAPTIVE MANUFACTURING SYSTEM CONTROL ARCHITECTURE 被引量:2
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作者 王雷 唐敦兵 +2 位作者 万敏 袁伟东 许美健 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2009年第2期122-129,共8页
Future manufacturing systems need to cope with frequent changes and disturbances, therefore their control architectures require constant adaptability, agility, stability, self-organization, intelligence, and robustnes... Future manufacturing systems need to cope with frequent changes and disturbances, therefore their control architectures require constant adaptability, agility, stability, self-organization, intelligence, and robustness. Bio-inspired manufacturing system can well satisfy these requirements. For this purpose, by referencing the biological organization structure and the mechanism, a bio-inspired manufacturing cell is presented from a novel view, and then a bio-inspired self-adaptive manufacturing model is established based on the ultra-short feedback mechanism of the neuro-endocrine system. A hio-inspired self-adaptive manufacturing system coordinated model is also established based on the neuro-endocrine-immunity system (NEIS). Finally, an example based on pheromone communication mechanism indicates that the robustness of the whole manufacturing system is improved by bio-inspired technologies. 展开更多
关键词 bio-inspired manufacturing system neuro-endocrine-immunity system (NEIS) self-adaptive control model ultra-short feedback bio-inspired manufacturing cell (BMC) PHEROMONE
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Functional Role of Neuropeptide Leucokininll in Growth Inhibition of Red Palm Weevil Rhynchophorus ferrugineus 被引量:1
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作者 Mona Mohammed Saleh A1-Dawsary 《Journal of Agricultural Science and Technology(A)》 2012年第8期988-996,共9页
Peptides are known to on act to discourage the growth of insects. In this perspective, authors studied the biological and physiological effects of LeucokininlI on the growth of Red Palm Weevil through adult insect fee... Peptides are known to on act to discourage the growth of insects. In this perspective, authors studied the biological and physiological effects of LeucokininlI on the growth of Red Palm Weevil through adult insect feeding of the sugar cane treated with different concentrations (0.05%, 0. I%, 0.25%, 0.4%) and biological effects on the number of eggs, the percentage of hatching, the length of the generation and the proportion of deformation, Results showed that there is a significant reduction in the number of eggs laid by the insects as the average number of eggs/female 75.7, 63.5, 59.4, 55.1 egg for each of the concentrations, respectively, compared with the average 140.2 egg in the control group, and reduction of percentages of hatching in all treatment as 71.4%, 64.6%, 70% and 71.5% respectively, compared with 79.3% of the control group. The percentage of deformations in egg densities included 44.4%, 15.4%, 22.6%, 27.8% compared to the control group. The results showed that there are a number of large deformations in the resulting larvae for different treatments. The conclusion is drawn that this study using LeucokininlI confirmed inhibition growth and caused an imbalance in the development stages of different insects due to its effect on the hormones that control molting of insects. This conclusion is furthermore apparent in the larval stage, as it appeared that Leucokininll prevents the insect from completing its life cycle. Test results using LeucokininlI are encouraging, and its future potential use in reducing Red Palm Weevil deserves broader studies. If the spread of currently known that this LeucokininlI is without prejudice to the work of the hormonal system. 展开更多
关键词 R. ferrugineus NEUROPEPTIDE HATCHING DEFORMATION treatment HORMONES LeucokininlI.
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Lethal neuroendocrine carcinoma in ulcerative colitis
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作者 Hugh J Freeman Ken Berean 《World Journal of Gastroenterology》 SCIE CAS CSCD 2009年第46期5882-5883,共2页
A 48-year old male with longstanding and extensive pancolitis developed a high grade and rapidly lethal malignant lesion in the ascending colon characterized by a neuroendocrine carcinoma.Prior biopsies obtained from ... A 48-year old male with longstanding and extensive pancolitis developed a high grade and rapidly lethal malignant lesion in the ascending colon characterized by a neuroendocrine carcinoma.Prior biopsies obtained from multiple sites in the colon during endoscopic surveillance were reported to show only inflammatory changes without dysplasia.Although operator-dependent,repeated endoscopic studies may have limitations during surveillance programs because the biological behavior of some colonic neoplastic lesions may have a rapid and very aggressive clinical course. 展开更多
关键词 Colorectal cancer Neuroendocrine carcinoma Ulcerative colitis Surveillance colonoscopy DYSPLASIA
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