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Single-layer flow and accumulated flow monitoring of Injection-production engineering technology is a necessary means to ensure precise injection and effective water. This paper uses the vortex principle to achieve flow measurement interval. However, underground injection wells in the environment, its sensor by water injection piping vibration and noise caused the flow field disturbance double interference...
This paper was based on the acoustic propagation mechanism in the oil pipe, the transmission model is established, dispersion equation and spectral distribution equation are derived, and the attenuation characteristics of acoustic propagation is analyzed. The simulation experiments show when the acoustic propagation process in the periodic oil pipe, the spectrogram appears to be the periodic comb...
Adopting digital inverted plasma arc cutting power as a platform and focusing on its strong nonlinearity and time-varying property, this paper puts forward a variable interval fuzzy-PI quantification algorithm with a self-adjustable factor in the full domain. The introduction of the PID neural network is for decoupling parameter variables in the multi-parameter coupling cutting process. This algorithm...
A fuzzy-PI double-mode controller is proposed in this paper. A variable interval fuzzy quantification algorithm with self-adjustable factor in full domain is also introduced in this paper. The controller combines PI control with this algorithm to study the inverted plasma cutting power supply and its strong nonlinearity and uncertainty in cutting process. This algorithm avoids complex nonlinear system...
A decoupling control based on PID (proportional-integral-derivative) neural network and relevant algorithms are proposed in this paper. They are introduced to solve problems of nonlinearity and strong coupling between cutting speed and torchpsilas height in plasma cutting system. The dynamic model of system was established with use of BP (back-propagation) neural network. The actual experimental cutting...
The CAD/CAM system of FRP pipes based on Internet is an integrated manufacturing system, used to design and produce high-pressure and sand-filling FRP pipes. It has realized the integration of the whole production process, from choosing of raw materials to winding machine control. The network of the system adopts the client/server mode, and the software is developed under VC++ 6.0 environment based...
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