Multi Objective Optimization Research on Power Consumption and Stiffness of Internal Feedback Hydrostatic Turntable

This paper proposes a parameter optimization method for hydrostatic turntable with internal feedback in machine tools, considering stiffness and energy consumption. For the first time, a power consumption calculation method for oil pads with built-in restrictor is presented, and a stiffness calculation model for the oil film is established based on the Reynolds equation. A multi-objective optimization function is constructed in the form of weighted coefficients. An experimental setup for performance testing of the oil pad with internal feedback is developed, and finite element simulation analysis is combined to verify the accuracy of the theoretical method. Finally, corresponding optimization schemes for different scenarios are provided. The results show that at a speed of 50 r/min, power consumption can be reduced by 50.1% by adjusting the coefficients of the objective function. This method can serve as a reference for the energy-efficient design of hydrostatic turntables.