面向动车电机研发工艺流程保护的零信息隐藏算法

为降低中车集团旗下主机厂与配件厂电机研发关键细节参数与工艺流程被泄密的风险,提出了一种基于立体动车电机模型的零信息隐藏算法。首先,为提取复合动车电机仿真模型结构贴图颜色、亮度等稳定分量特征,利用平方和分解思想对立体电机模型载体进行可逆分解处理;其次,以紧支撑性的双正交小波对分解后的电机map贴图图像进行三重小波重构,嵌入中车版权认证标志信息后使位图数据可稳定提取;最后,充分利用逆分解冗余电机结构模型经边折叠简化后的低能量三维坐标点分位,进行窜改性标志信息嵌入,完成版权标志检测。模拟实验表明,嵌入算法不仅可抵抗常用的旋转、非均匀压缩攻击,对面向立体动车电机模型的顶点替换、模型线框渲染特殊攻击也具备良好的鲁棒性能。

Synthetic Performance Simulation of E-Car HS2000

The simulation model of the E car HS2000 including the permanent magnetic direct current motor with the augment magnet winding is constructed based on tests in order to simulate the synthetic performance of the electric car. The performance of E car HS2000 is analyzed by means of modeling and programming according to data acquired during tests. The simulation results show that the performance of E car HS2000 is successfully predicted and the model and the corresponding simulation software are feasible for simulating E cars. They can be used as effective tools for analyzing the performance parameters as well as specifications of E cars during prototype stage.