Vol. 9 No. 1 (2022): January-March

Articles

  • THE MEASUREMENT OF MOMENT OF INERTIA BY USING THREE WIRE PENDULUM
    Ning Feng

    Moment of inertia is a physical quantity of great significance for the rotation of objects. This formal laboratory report studies the use of three-wire pendulum to measure the moment of inertia of an object. The main principle is to use the period of the torsional pendulum motion of the object

    29-36
  • LPS ROPE SUSPENSION AUXILIARY UNLOADING DEVICE STRUCTURE DESIGN
    Hongbao Liang, Zhang Yan, Hongtao Chen, Jiaxin Lu, Xiuting Han, Wenyuan Zhang, Yansen Yang

    In this paper, we propose a wellhead unloading protection system for a multi-well pumping unit with the functions of multi-pumping, energy efficiency, and intelligent control, and address the painful issue of having to shut down the entire well group for maintenance when the single well fails or

    10-19
  • DISCUSSION ON RELATED PROBLEMS IN THE DESIGN OF PORTAL STEEL FRAME
    SADI Journal; Qi Li, Xiaoli Lu2

    With the continuous acceleration of economic development speed, the construction demand of industrial plant is more and more large. In the construction process of the industrial plant, it usually adopts the portal steel frame and light steel structure, which is mainly due to the fact that the

    37-43
  • LUNG SOUND RECOGNITION BASED ON PRE-TRAINED CONVOLUTIONAL NEURAL NETWORK
    Shanshu Bao, Lei Liu, Bo Che, Linhong Deng

    It has become one of the focuses of respiratory medicine to recognize lung sounds by machine learning methods, and then assist doctors to diagnose patients' pulmonary diseases. Aiming at the problems of model overfitting and low classification accuracy caused by the small size of lung sound

    20-28
  • DESIGN OF DOUBLE AXIS SOLAR AUTOMATIC LIGHT TRACING DEVICE BASED ON CLOUD PLATFORM
    Geng Qiandong

    Solar energy is a widely distributed and inexhaustible "green" renewable new energy, which is one of the best solutions to the energy crisis in the world. However, the conversion efficiency of photovoltaic cells in large-scale solar applications is not high, and the cost is very high. Therefore,

    1-9