Mathematical modeling of the axial-piston pump power regulator

Abstract

A mathematical model of the regulator was developed; a scheme for its solution in the Matlab-Simulink environment was suggested; dependencies of the spool movement (x1), piston (x2), transition time (t) and other parameters on the pressure in the pressure line (p) have been determined. The mathematical model of the regulator establishes the effect of pressure on control process parameters. When the pressure increases from 30 to 45 MPa, the regulator spool moves at a distance varying from 0.4 - 2.8 mm. The spool movement is proportional to the pressure. The piston movement is more sensitive to the change in pressure. It changes within the range of 3–19 mm, while the relationship is non-linear. The cylidner pressure and the ratio of rocker arms are proportional to the pressure and increases 1.5 times; the transition time is expressed by a non-linear dependence and decreases two-fold.

Constant power regulator of a volumetric hydraulic machine in the power transmission unit of a civil aircraft

“…Проблемы моделирования регулируемых аксиально-плунжерных гидромашин с наклонным диском, вопросы мониторинга параметров давления и мощности отражены в работах [3][4][5][6][7][8][9][10]. Следует отметить, что приведенные в работах расчетные и схемные решения, а также подходы к моделированию имеют существенные отличия.…”