降低车身所受外部激励，实现舒适乘坐性能；抑制轮胎接地载荷的变化，实现稳定行驶性能；在纵向力与侧向力作用下，保持车轮 的稳定性。 悬架的三大基本作用 汽车"下盘"稳不稳，在很大程度上取决于悬架的匹配和调校。目前民用汽车一般采用阻尼减振器+螺旋弹簧的组合，而稍微高级一些 的会采用可变阻尼的减振器配合空气悬架来提升悬架表现。但说到底，阻尼减振器内部的工作介质基本都为液压油和气体，其原理是利 用阻尼是机械能在动力学系统中耗散，起减振作用。 此外，市面上还有一种较为少见的磁流变减振器，这种减振器相比传统的液压减振器有什么区别呢？ 什么是磁流变减振器？ 磁流变减振器是通过一种"磁流变液"产生的电磁反应，实现对减振器阻尼力的调节。简单说，这种减振器内部填充的不再是普通的 液压油，而是一种特制的含有"铁屑"的液体。这种"磁流变液"由基液、磁性颗粒和添加剂组成，磁性颗粒就是经过化学处理的铁屑，其 能够在接电后的磁流变液体中成为"悬浮体"。 磁流变液在不同磁场里可以产生不同的状态变化——比如水具备高流动性，也可像浆糊一样黏稠。具体来说，在没有接电产生磁场 之前，磁流变液就是"液体"，当接电产生磁场之后，能立刻变得粘稠，产生阻尼。 ...

Core Insights - Investment institutions are increasingly emphasizing responsible management and active ownership, leading to higher governance improvement demands from invested companies [1] - Listed companies are more willing to engage with investors through interactive platforms, actively disclosing operational status and market management dynamics [1] Group 1: Industry Interaction - Over 1,290 companies in the A-share market engaged in interactive Q&A sessions with investors from September 15 to September 19, including several companies awaiting listing [2] - Seven industries had more than 60 companies participating in interactive Q&A, with electronics, machinery, and power equipment having over 100 companies each [2] - The electronics industry had over 130 companies involved, with a year-to-date index increase of over 44%, driven by keywords like chips and robotics [4] Group 2: Company Performance - Companies with high investor engagement saw an average year-to-date increase of over 30%, significantly outperforming the CSI 300 index [8] - Companies with over 50 interactive Q&A sessions had an average increase exceeding 60%, with Changshan Pharmaceutical and Zhongding Co., Ltd. both exceeding 80% [8] - Changshan Pharmaceutical received over 100 Q&A inquiries, focusing on its development vision and innovation drug progress [5][6] Group 3: Investment Opportunities - Seven low-valuation, high-performance potential stocks were identified, focusing on sectors like liquid cooling servers, semiconductors, and robotics [9] - Great Wall Motors has a latest P/E ratio of less than 18, with a projected net profit of nearly 12.7 billion yuan in 2024 and expected growth rates exceeding 11% in 2025 [10] - Unigroup Guowei is predicted to have a net profit growth rate exceeding 30% for both 2025 and 2026, with ongoing developments in its quartz crystal resonator production base [10]

中鼎股份（000887.SZ）8月25日在投资者互动平台表示，公司磁流变减振器技术可以运用到机器人柔性 关节与腿部减振，目前磁流变减震器主要运用于汽车，公司正在加快布局磁流变减振器项目，目前项目 产线已经落地，正在加速与客户进行对接。 （文章来源：每日经济新闻） 每经AI快讯，有投资者在投资者互动平台提问：中鼎股份为宇树机器人提供了磁流变液阻尼器，是否 属实？ ...