基于开放极板电容器的磁流变液沉降原位监测研究

实时原位监测可以感知阻尼器件内部磁流变液沉降状态，以主动分散提升器件可用性。通过研究磁流变液浓度梯度与沉降体介电常数的关系，构建了开放电容式磁流变液沉降状态原位监测方法与系统。开展了电容中心柱极高度对磁流变液准静态沉降过程电场分布影响的仿真分析，并通过沉降监测试验表明：系统能够有效地监测磁流变液静置沉降状态；随着沉降体浓度增大，其介电常数相应增大，开放极板电容器电容值增大；随着沉降进程的发展，沉降速率逐渐降低。

Open-plate capacitor based in-situ monitoring for magnetorheological fluid settling

It is of great significance to establish an in-situ settlement monitoring system for the magnetorheological (MR) fluid in devices. By studying the relationship between the concentration gradient of MR fluid and the dielectric constant of the sediment, a monitoring method and system based on an open-plate capacitor is designed. The influence of center pillar height on the electric field distribution is simulated, and the in-situ monitoring of MR fluid show that the system can effectively measure the static settlement of magnetorheological fluid. The dielectric constant of the sediment increases with the heightening of concentration, and the sedimentation ratio lowers with the development of the settling process.