Method for determining the displacement of a radial piston machine
AssigneeZF Friedrichshafen AG
InventorsManfred Sieger, Joerg Geis
Life of this patent
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Abstract
A method of determining displacement of a radial piston machine (1) having adjustable eccentricity (e). The radial piston machine (1) includes cylinders (2) arranged in a pivoting manner and a drive shaft that drives an eccentric (5). The rotation angle of the drive shaft is labeled as α and the pivoting angle of the cylinders (2) is labeled β. The pivoting angle β is measured and from the measured values for the pivoting angle β, the eccentricity (e) and hence the displacement (v) are calculated.
Claims7
A method of determining displacement of a radial piston machine (1) having adjustable eccentricity (e), the radial piston machine (1) having cylinders (2) arranged in a pivoting manner and having a drive shaft that drives an eccentric (5), the method comprising the steps of:
- measuring, with angular sensors, a pivoting angle (β) of the cylinders (2) with respect to an axis formed by a pivoting point of the cylinder and a rotation point of the eccentric;
- and
- calculating, with the radial piston machine, the eccentricity (e) of the eccentric and hence the displacement (v) of the radial piston machine from the measured values of the pivoting angle (β) of the cylinders, and
- determining, with the radial piston machine, a direction of rotation of the drive shaft from a course of a function (β=f(α)) of the pivoting angle (β), with the pivoting angle (β) being a function of a rotation angle (α) of the drive shaft.
Dependencies are inferred from the claim text.