Abstract
To give full play to the working performance of engine and hydraulic system used for engineering vehicle and simultaneously increase its power transfer efficiency under dynamic working conditions, the control strategy for engine-variable pump-variable motor (three-variable) series hydraulic drive system was researched. The parameters of various components in this system were analyzed and matched to determine the rated working conditions of each link. An adaptive hierarchical control strategy was adopted, and then the operating points of engine, variable pump and variable motor can be adjusted actively to match the power of engine and load relying on the maximization of system efficiency for a given working condition. Then the backward-facing simulation model of this system was established in MATLAB/Simulink. The simulation results show that the above control strategy can effectively ensure the high power transfer efficiency and the engine working conditions can be optimized to reduce engine oil consumption.
| Original language | English |
|---|---|
| Pages (from-to) | 1416-1421 |
| Number of pages | 6 |
| Journal | Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics |
| Volume | 41 |
| Issue number | 8 |
| DOIs | |
| State | Published - 1 Aug 2015 |
| Externally published | Yes |
Keywords
- Adaptive control
- Engine
- Hierarchical control
- Hydraulic drive system
- Three-variable
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