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Jie Lin,Ying Chen,Pan Zhang,Mingxing Ren,Hairong Xu,Xiaochang Wang 한국식품과학회 2013 Food Science and Biotechnology Vol.22 No.2
Jasmine tea is quite popular in daily consumption and beverage industry, and scenting quality and synthetic artificial oil are crucial issues of its quality control. The headspace volatile profiles of jasmine tea samples were analyzed by headspace-solid phase microextraction (HSSPME)coupled with GC-MS. Twenty-nine volatile compounds were determined as ‘common components’ that should exist in jasmine scented teas. Potential correlation was discovered between quality grade of jasmine tea and the ratio of peak area percentage of α-farnesene, (Z)-3-hexenyl benzoate, methyl anthranilate, and indole to that of linalool. This ratio was denoted as ‘jasmine tea flavor’ (JIF) index,a novel index for quality evaluation of jasmine tea. JTF index and common components could provide a good identification of well-scented, poor-scented, and not-scented jasmine teas. Moreover, carrier compounds might be a clear evidence for identifying fake jasmine teas that were added with synthetic fragrance oil.
Design and Co-simulation of an Antiskid Brake System for a Civil Aircraft
Dawei Li,Mingxing Lin,Tao Zhang 한국항공우주학회 2023 International Journal of Aeronautical and Space Sc Vol.24 No.3
To accelerate the design phases of the antiskid control system for a turboprop aircraft and to effectively ensure appropriate results, a brake-by-wire antiskid control system for a business aircraft is designed and investigated using a new virtual prototyping technology, which significantly reduces time, effort and cost. In contrast to traditional empirical formula methods, a multidisciplinary modeling co-simulation method has been proposed in this paper. The mathematical modeling process and antiskid control algorithm (Pressure Bias Modulation–Proportional–Integral Derivative) were analyzed and adopted. The co-simulation model was designed based on multi-body dynamic and multidisciplinary approach. The simulation results were compared with measured data sampled from an inertial platform test rig. The simulation results and physical experiment results proved the efficiency of the overall system.