高速电磁阀静态电磁力数学模型

Investigation of the static electromagnetic force model for high speed solenoid valve

为研究高速电磁阀电磁力特性,进行了磁性材料B-H磁化曲线拟合公式的研究,提出了计算精度高且形式简单的B-H曲线拟合公式,并利用B-H曲线试验数据验证了提出的拟合公式的正确性。以磁导率为电场-磁场耦合的桥梁,建立了考虑磁性材料磁化特性的高速电磁阀静态电磁力数学模型,同时进行了两种不同气隙下电磁力的试验研究,试验数据和仿真结果的误差在10%以内,这证明了所建立的数学模型的正确性。研究结果表明:在进行高速电磁阀数学模型建立时,软磁材料磁阻和气隙磁阻共同决定高速电磁阀的电磁力特性。

In order to study the electromagnetic force of the HSV, fitting formulas with high precision and concise modality for the B-H curves of the magnetic materials need to be investigated and proposed, and subsequently veri- fied by comparison to the B-H curves obtained in the experiments. In the next step a mathematical model for the static electromagnetic force of the HSV, including the magnetization characteristics of magnetic materials, was es- tablished based on the electromagnetic coupling principle. During the experiments with regard to the electromagnet- ic force at two different air gaps, the deviations between the experimental data and the simulation results were less than 10% , which can be regarded as proof of ensuring the validity of this mathematical model. The results of the study show that both the reluctance of the soft magnetic materials and air gaps determine the electromagnetic force of the high speed solenoid valve, when establishing a mathematical HSV model.