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Optimum Control of a Hydrostatic Powertrain in the Presence of Accessory Loads
Technical Paper
2002-01-1417
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In off-highway applications the engine torque is distributed between the transmission (propulsion) and other accessories such as power steering, air conditioning and implements. Electronic controls offer the opportunity to more efficiently manage the control of the engine and transmission as an integrated system. This paper deals with development of a steepest descent algorithm for maximizing the efficiency of hydrostatic transmission along with the engine in the presence of accessory load. The methodology is illustrated with an example.
The strategy can be extended to the full hydro-mechanical configuration as required. Applications of this approach include adjusting for component wear and intelligent energy management between different accessories for possible size reduction of powertrain components. The potential benefits of this strategy are improved fuel efficiency and operator productivity. The simplicity of the control algorithm lends itself to easy real time implementation with minimum memory and processing requirements.
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Citation
Surampudi, B., "Optimum Control of a Hydrostatic Powertrain in the Presence of Accessory Loads," SAE Technical Paper 2002-01-1417, 2002, https://doi.org/10.4271/2002-01-1417.Also In
References
- “Internal Combustion Engines and Automotive Engineering” Matthew Ronald Douglas Harper-Collins August 1998
- ‘“Lecture Notes on Robust Adaptive Control” Ioannou and Sun 1995
- Mannesmann Rexroth Brochure for Variable Displacement Motor A6VM, RE 91604/11.94