A method for evaluating the energy recovery capabilities of a hydraulic system during the movement of excavator equipment
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Abstract
A method for calculating the amount of hydraulic energy resulting from changes in the potential and kinetic energy of moving masses of excavator equipment and recovered using a pneumatic hydraulic accumulator is considered. Mathematical models for calculating the law of motion of links in the space of generalized coordinates of the system, direct and inverse dynamics problems by the Euler Lagrange method, and the polytropic charging-discharging process of a pneumatic accumulator are presented. The pressure levels in the hydraulic lines of the system are shown when moving according to a given law, the process of charging the pneumatic hydraulic accumulator and the use of the volumetric flow of the battery to drive the hydraulic motor in energy recovery mode. Conclusions are drawn about the most appropriate modes for energy recovery, as well as about the efficient use of recovery with the most accurate determination of the time and duration of battery activation based on preliminary modeling of the subsequent movement of equipment.the
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References
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