Zahteve pogonskih aktuatorjev v sodobnih pralnih strojih

Abstract

Some aspects of drive actuator control in contemporary washing machines The contemporary washing machines have advanced electronic process control, which main boundary limits are main functionality (e.g. washing effect) and process side effects (e.g. stability, vibrations). The washing machine motor control is actually multi-constrain optimization task, which demands profound control knowledge to utilize low-cost hardware in order to achieve a compromise solution. Presented is the state of art about the washing machine motion drives (actuators) and their control regarding the fulfillment main functionalities (e.g. clothes dirtiness, cloth weight, water quantity, time of washing). An automatically controlled washing machine includes a laundry drum and a drive motor which drives the laundry drum at a plurality of different speeds for washing machine processes - washing, rinsing and spinning. The speed of the drive motor is adjustable with a (laundry drum rounds-per-minute) control circuit and is determinable in accordance with set-point and actual rpm values. Main focus will be paid on the optimization of washing machine dynamics, which is considered to be (rigid) multibody system, experimentally monitored with vibrations monitoring for steady-state as well as transient system response.