RESUMO
To improve the performance of the vortex flowmeter, a vortex signal model based Kalman filter of the vortex signal processing method is proposed. According to the characteristics of the vortex signal, a linear vortex signal model is designed. Combining the fuzzy search and iterative algorithm, the Kalman filter algorithm is improved by analyzing the principle and key parameters of the Kalman filter algorithm. The proposed method is verified by simulation and real flow experiments and compared with other methods; the experimental results show that the proposed method has the advantages of adaptive filtering, better anti-interference ability, and faster filtering speed.
Assuntos
Coledocostomia/métodos , Neoplasias do Ducto Colédoco/complicações , Icterícia Obstrutiva/etiologia , Icterícia Obstrutiva/cirurgia , Idoso , Idoso de 80 Anos ou mais , Alanina Transaminase/sangue , Bilirrubina/sangue , Ducto Colédoco/cirurgia , Drenagem , Feminino , Seguimentos , Humanos , Icterícia Obstrutiva/sangue , Jejuno/cirurgia , Masculino , Pessoa de Meia-Idade , Neoplasias Pancreáticas/complicações , Taxa de Sobrevida , gama-Glutamiltransferase/sangueRESUMO
OBJECTIVE: to study the optimum extracting Process of Agrocybe cylindracea polysaccharides. METHODS: The technique conditions of Agrocybe cylindracea polysaccharides aere opeimized by the hot water extraction. determined the content of polysaccharides as the estimative targets and choosed the single-factor experiment and the orthogonal design of L1, (35 ) to investgate the polysaccharides content influenced by five factors such as water sample ratio, pH value, extraction temperature, ethanol concentration, the time of extraction. RESULTS: The optimum extraction conditions uere as follows: water sample ratio 1: 10, pH7. 5 , extaction temperature was 90 degrees C , one hour every time,ethanol concentration was 95%. made the experiment foundation for optimizing the extraction methods of Agrocybe cylindracea polysaccharides.
