{"id":10463,"date":"2022-12-20T15:24:45","date_gmt":"2022-12-20T14:24:45","guid":{"rendered":"https:\/\/www.vimos-technologies.com\/?post_type=news&p=10463"},"modified":"2022-12-20T15:24:48","modified_gmt":"2022-12-20T14:24:48","slug":"washing-machine-just-a-rotating-drum","status":"publish","type":"news","link":"https:\/\/www.restarframos.com\/en\/news\/washing-machine-just-a-rotating-drum","title":{"rendered":"Washing Machine – Just a Rotating Drum?"},"content":{"rendered":"\n

Although there is some truth in this statement the basic principle of washing machines \u2013 a rotating drum \u2013 has not changed since the 18th<\/sup> century. However, washing machines have evolved tremendously in these centuries from a manually operated wooden barrel to a technological marvel commonly found in most households, thanks to modern microelectronics.<\/p>\n\n\n\n

The introduction of microelectronics in washing machines did not only increase ease of use but also helps to be more sustainable and save resources. Especially in the EU where resourcefulness is key, an intelligent motor management can help achieving energy and resource consumption goals.<\/p>\n\n\n\n

A crucial part of every washing machine is its motor and its controller. A bad motor controller IC can cause all sorts of unwanted issues such as excessive heat and power consumption, noise (acoustic & EMI), and, in worst case, damage surrounding components of the system.<\/p>\n\n\n

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Washing machine control board with Fortior FU6815L motor controller<\/figcaption><\/figure><\/div>\n\n\n

Generally, a motor controller needs to be able to #1 reach high torque from close to 0 RPM<\/strong>. Depending on the machine’s design a #2 suitable RPM range<\/strong> must be achievable: for belt driven washing machine generally higher speeds are needed (200 \u2013 18000 RPM) while direct drive machines operate at 20 \u2013 1600 RPM. For mass production, the controller needs to #3 compatible with multiple motors<\/strong> (of a product series without the need for difficult customizations). Further, the controller must be able to #4 detect eccentricity and be able to correct it<\/strong>, while always #5 controlling for overshooting voltage<\/strong>.<\/p>\n\n\n\n

Fortior’s solution:<\/p>\n\n\n\n