Cooling efficiency calculation method for electronic assistance steering system

• Main Authors: JI YAQING, YAN WEI
• Format: Patent
• Language: Chinese; English
• Published: 14.11.2017
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention provides a cooling efficiency calculation method for an electronic assistance steering system. At least one MOS (Metal Oxide Semiconductor) tube component in the electronic assistance steering system is converted into an equivalent heat circuit model, wherein each layer of material in the MOS tube component corresponds to one equivalent heat circuit model; and according to an instantaneous heat transfer formula, each equivalent heat circuit model is calculated, wherein the instantaneous heat transfer formula contains the influence of the heat capacity Cth and the heat resistance Rth of each layer of material of the MOS tube component on cooling efficiency. After the technical scheme is adopted, the optimal cooling scheme of material laying in the MOS tube component can be quickly and accurately determined. 本发明提供了种电子助力转向系统的散热效率计算方法，将所述电子助力转向系统中的至少个MOS管组件转化为等效热路模型，其中，所述MOS管组件中的每层材料对应等效热路模型；根据瞬时传热公式计算每等效热路模型，其中所述瞬时传热公式含所述MOS管组件的每层材料的热容C和热阻R对所述散热效率的影响。采用上述技术方案后，可快速精确地确定MOS管组件内材料布设的最优的散热方案。