High-temperature superconducting (HTS) maglev, owing to its unique characteristic, has a wide range of engineering application. Researches on the dynamic response, mostly affected by the irregularity of permanent magnetic guideway (PMG), is the top priority. In order to detailly find out the influence of the irregularity of PMG in lateral/vertical direction on the dynamic response of the HTS bulks respectively, this paper introduces the different directional random excitation and employs a real-time mechanic-electromagnetic-thermal coupling method to study the HTS bulks’ dynamic response. The results show that the different directional excitation has a more significant effect than the temperature does. This study makes a detailed understanding of the HTS bulks’ dynamic response under the random excitation in different directions, providing an effective reference for the HTS bulks’ dynamic analysis.

高温超导（HTS）磁悬浮由于其独特的特性，具有广泛的工程应用。研究主要受永磁导轨（PMG）不规则性影响的动态响应是重中之重。为了详细了解PMG在横向/垂直方向的不规则性分别对HTS块体动态响应的影响，引入不同方向的随机激励，采用实时机械-电磁-热耦合方法，研究 HTS 块体的动态响应。结果表明，不同方向的激励比温度的影响更显着。本研究详细了解了HTS块体在不同方向随机激励下的动态响应，