Closed-loop control method for linear drive e.g. linear compressor, involves moving linear drive to and fro along drive axis, where linear drive has stator, rotor and drive coil through which coil current flows

摘要

The method involves moving linear drive (2) to and fro along drive axis (9), where linear drive has a stator (4), rotor (5) and a coil (6) through which coil current flows and the coil current is subjected to closed-loop control is precise so, that the actual coil current and the desired coil current are equal. A desired coil current is determined depending on a momentary and/or prospective former position of the rotor. Independent claims are also included for the following: (1) a device has moving drive to and fro along drive axis, where linear drive has a stator, rotor and a coil through which coil current flows (2) a method for cooling a commodity and/or for consolidating a fluid, involves using a regulating method and a device.