Dynamic pressure bearing based on magnetorheological fluid lubrication and test system

The invention discloses a magnetorheological fluid lubrication-based dynamic pressure bearing and a test system. The magnetorheological fluid lubrication-based dynamic pressure bearing comprises a magnetorheological fluid dynamic pressure bearing, a stepping motor, a rolling bearing and a main shaft, according to the magneto-rheological fluid dynamic pressure bearing, a specific coil of an excitation system can be selected according to external load and vibration conditions, and current with corresponding magnitude is input, so that damping and rigidity of magneto-rheological fluid at a lubricating position are quickly changed, scraping and collision between a main shaft and a bearing bush are reduced, the reliability of a transmission system is improved, and the service life of the transmission system is prolonged. Therefore, higher rotation precision and transmission efficiency of the main shaft system are realized. 本发明公开了一种基于磁流变液润滑的动压轴承及测试系统，包括磁流变液动压轴承、步进电机、滚动轴承和主轴。本发明的磁流变液动压轴承可以根据外部负载和振动的情况，选择励磁系统具体的线圈并输入