Theoretical And Experimental Research On A New Inclination Sensor Based On Magnetic Fluid

Inclination sensor is a very important detection tool in mechanical equipment and intelligent platform leveling,machining and other engineering measurement work,the traditional inclination sensor signal transmission is slow,low sensitivity,large volume,more and more difficult to meet the requirements of modern test technology.In this paper,a new type of magnetic fluid inclination sensor is designed by innovatively using magnetic fluid and Hall elements and changing the non-magnetic container,which effectively reduces the volume of the inclination sensor,improves the sensitivity of the inclination sensor,and adopts the method of combining theoretical and software simulation and experiment to study the designed new magnetic fluid inclination sensor.In terms of theoretical analysis,using the theoretical basis of Bernoulli equation,second-order buoyancy and Hall effect of magnetic fluids,the spatial magnetic field distribution of permanent magnets,the magnetic field distribution between ring permanent magnets and cylindrical permanent magnets and the force formula are calculated,and the static performance indicators required to measure the magnetic fluid inclination sensor designed in this project are determined.Maxwell software was used to simulate the magnetic field and magnetic field force of the permanent magnet to determine the length of the permanent magnet support frame and the size range of the experimental sensor prototype.By experimentally measuring the inter-permanent magnet force,the combination of the ring permanent magnet and the cylindrical permanent magnet of the magnetic fluid inclination sensor designed in this topic is determined,and the static performance experimental bench of the magnetic fluid inclination sensor is built,and the static characteristics of the sensor are designed,including linearity,sensitivity,resolution,hysteresis and repeatability.Experimental results Show that the magnetic fluid inclination sensor designed in this paper has a sensitivity of K=20.9mv/°,linearity of 3.18%,hysteresis error of 1.43%,repeatability error of ±1.27%,and resolution of 0.16%,indicating that the magnetic fluid inclination sensor designed has high sensitivity and static performance meets the design requirements.The above research results provide theoretical and practical basis for the research and development and optimization design of new products of inclination sensors,and have certain engineering practical value for guiding the development of new products of inclination sensors.