Abstract
Model-based control algorithms of digital hydraulic valves offer optimized control performance, but are computationally heavy. Research work has been carried out using PC hardware such as dSPACE real-time systems. In order to apply digital hydraulic valve control in real, series production application, the algorithms should be redesigned such that controllers with limited computation power are sufficient. The paper presents methods for lowering the computational burden and shows the effect of optimization methods in execution time. Model-based controller design is carried out in MATLAB/Simulink and automatic code generation is used in implementation phase. A wheel loader equipped with digital hydraulic valve system is presented as a test case, where control algorithms are implemented on commercial Bosch Rexroth BODAS RC controller. Preliminary work for computationally faster control algorithms is carried out on mobile boom mock-up. The methods presented decrease the execution time to approximately 1/194 of the original.
| Original language | English |
|---|---|
| Title of host publication | The Seventh Workshop on Digital Fluid Power |
| Publisher | Linz Center of Mechatronics |
| Pages | 114-128 |
| Number of pages | 15 |
| ISBN (Print) | 978-3-200-04014-4 |
| Publication status | Published - Feb 2015 |
| Publication type | B3 Article in conference proceedings |
| Event | Workshop on Digital Fluid Power - Duration: 1 Jan 1900 → … |
Conference
| Conference | Workshop on Digital Fluid Power |
|---|---|
| Period | 1/01/00 → … |
Keywords
- Digital Hydraulics
- Digital Valve System
- Digital hydraulic valve control
- DFCU
- Optimization
- Mobile machine