Papers by Author: Tao Juan

Abstract: Based on EMI and ANN techniques, crack location in coupling beam was studied by the experimental platform which using the WK6500 impedance analyzer. Impedance curves of the different PZT was obtained to diagnosis the situation of coupling beam whether it was perfect or cracked, and then located the crack by neural network technique to if the coupling beam was cracked.

Abstract: Multi-objective optimization of the dynamic gear flowmeter was established by using computer software optimization toolbox. We established the objective function with flow pulsation coefficient minimum and smallest volume of the meter as optimized object, by establishing boundary constraint conditions and performance constraint conditions, choosing proper parameters and initial values, and then we can optimize the design parameters by the help of computer software using optimization function. The optimizing methods can greatly improved the design and optimizing efficiency, which can help us to get the optimal design in the shortest time.

Abstract: As we know, the hydraulic problems, the ordinary gear flowmeter pulsation of the flow rate and the pressure pulsation of the defects, remain to be solved. The article started from the analysis of Instantaneous flow characteristics for general gear flow-meter, with the control variables method, relationship between the number of gear teeth and flow pulse rate was studied.The rule was discovered that while gear's number of teeth is bigger, the flow and press pulsation for general gear flowmeter is less. The paper conducted the simulation research on instantaneous flow characteristics for general gear flow-meter. The results show that: while z1=z2=30, the flow pulsation rate equals 7.05%. While z1=z2=8, the flow pulsation rate equals 24.45%. While z1=19, z2=14, the flow pulsation rate equals12.73%. This research has provided the theoretical basis for the gear flow-meter's design.

Abstract: The chord vibration frequency analysis is carried out based on the theory of vibration of continuous systems. The finite element software is used to analyze frequencies of different chords, which is compared with the theoretical frequency. The relevant conclusions demonstrate that studies on guitar chords’ sound quality and intonation using proposed finite element method are doable and necessary. It has certain directive significance in guitar production process.