Abstract
In the paper, the dynamic characteristics of water driven stage is considered by the step response method, theoretically and experimentally. This stage was developed for linear stage of ultra-precision machine tool. The water driven stage has the water hydrostatic bearings and water hydraulic piston. The speed of the stage is, in the static characteristics, proportional to the flowrate supplied to the piston. In order to investigate the dynamic characteristics of the stage, the mathematical model is derived. The water driven stage is modeled by the first order system. The time constant depends on the control conditions. For instance, the time constant becomes 2.5 ms if the flowrate is controlled, whereas it becomes 7.2 s if the supply pressure is controlled. In the experiments, the step input was input to the stage by removing applied constant mass stepwise. The experimental result shows the time constant measured was differed from the calculations, due to undesirable contacts between moving parts.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
