Automation of Electrically Driven Work Machines - High Performance Pilot Stage in Hydraulic Proportional Valves

Purpose and goal: ** Denna text är maskinöversatt **

The project has stated that the basic prerequisites for automating a work machine exist, but development is required in certain areas. In this project, the pilot valves have been identified as a limiting element to automate the hydraulic system. A good primer has been published which hopefully increases the general understanding of limitations of current technology.

Expected results and effects: ** Denna text är maskinöversatt **

The project easily leads to increased understanding among participating companies. Hopefully the project also provides increased understanding in other domains for the need to use the correct valves when controlling hydraulic components.

Furthermore, the project partners will work further with needs analysis which will hopefully lead to a new project which will lead to more sustainable work vehicles and also a published research article. Approach and implementation: ** Denna text är maskinöversatt **

The project focused on mathematical descriptions of the pilot valve and a theoretical analysis of the needs required in automatic movements. After the models were established and background analysis, work continued with laboratory tests. Complete vehicle analysis was supposed to be carried out in the spring, but with a good test bed within Flumes/LiU, this was seen as resource-intensive and the project considered that there would be a better overall result if the laboratory tests continued.