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This paper studied the efficiency of the oilfield water injection system by using the water injection system theory, fluid mechanics theory, and graph theory and optimization design technology. According to the actual conditions, the paper established the mathematical model of Wuliwan oilfield pipe network. Based on the actual data of production, energy distribution of oilfield water injection system...
An inverse control method for the chaos motion of the salient permanent magnet synchronous motors (PMSM) is proposed. Firstly, the model of PMSM in the rotor-field-oriented frame is transformed into the non-dimensional form via the multiple-time-scale transformation. Then, the chaos behaviors of the salient PMSM are analyzed by using phase portraits and bifurcation diagrams. On the basis of the invertibility...
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