| 摘要 |
<p>The invention relates to a method for substantially temperature-independent detection of the position of a moving element (9) by means of an inductive position sensor (1), comprising a coil (5) and a core (4) movable within the coil, the position of said core in relation to the coil (5) being dependent on the position of said element (9), whereby a measurement of the inductance of said coil (5), corresponding to the core (4) position, is detected by connecting a voltage to said coil (5) and measuring the time period in which a current (i) through the coil (5) is changed between two predetermined levels. The invention is characterised by comprising the following steps: feeding a regularly alternating voltage to the coil (5), measuring the current (i) flowing through the coil (5), measuring the period of time (t1) needed for said current (i) to change from a first predetermined level (i1)) to a second predetermined level (i2), and determining a measurement of the core (4) position through measuring said period of time (t1). Through the invention, an improved position detection is provided, primarily intended for automotive vehicle gearboxes, achieving a highly reduced temperature dependence.</p> |
