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Power optimization for multi-actuator pump-controlled systems
This paper presents a power optimization controller which minimizes fuel consumption for a multi-actuator system based on the efficiency characteristics of the engine and hydraulic pumps. Optimal steady-state operation is achieved while also satisfying the required transient performance of the machine. As an example, the power management method is applied to a 5-ton compact excavator with displacement-controlled actuators. A detailed simulation model is used to evaluate the excavator for a typical digging cycle, resulting in a 17% reduction in fuel consumption compared to the displacement-controlled system without static power optimization. The question considered in the current work is how to optimize the component operating points of a multi-actuator, displacement-controlled system in order to minimize fuel consumption. The power management method presented is based on static optimization, minimizing the instantaneous rate of fuel consumption by considering the efficiency characteristics of the diesel engine and hydraulic pumps. Transient effects are also considered, allowing the operator or designer to choose the best compromise between efficiency and performance. The power management algorithm was applied to a 5-ton compact excavator with a displacement-controlled hydraulic system. Simulation results showed a 17% reduction in total fuel consumption for a typical digging cycle. In the future, the proposed control system will be implemented on the prototype machine and evaluated experimentally.
Power optimization for multi-actuator pump-controlled systems
This paper presents a power optimization controller which minimizes fuel consumption for a multi-actuator system based on the efficiency characteristics of the engine and hydraulic pumps. Optimal steady-state operation is achieved while also satisfying the required transient performance of the machine. As an example, the power management method is applied to a 5-ton compact excavator with displacement-controlled actuators. A detailed simulation model is used to evaluate the excavator for a typical digging cycle, resulting in a 17% reduction in fuel consumption compared to the displacement-controlled system without static power optimization. The question considered in the current work is how to optimize the component operating points of a multi-actuator, displacement-controlled system in order to minimize fuel consumption. The power management method presented is based on static optimization, minimizing the instantaneous rate of fuel consumption by considering the efficiency characteristics of the diesel engine and hydraulic pumps. Transient effects are also considered, allowing the operator or designer to choose the best compromise between efficiency and performance. The power management algorithm was applied to a 5-ton compact excavator with a displacement-controlled hydraulic system. Simulation results showed a 17% reduction in total fuel consumption for a typical digging cycle. In the future, the proposed control system will be implemented on the prototype machine and evaluated experimentally.
Power optimization for multi-actuator pump-controlled systems
Leistungsoptimierung für pumpengesteuerte Mehraktuatorsysteme
Williamson, Christopher (Autor:in) / Ivantysynova, Monika (Autor:in)
2010
12 Seiten, 6 Bilder, 2 Tabellen, 14 Quellen
Aufsatz (Konferenz)
Englisch
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