Relevant bibliographies by topics / Hydromechanical Transmissions

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Conference papers

Academic literature on the topic 'Hydromechanical Transmissions'

Author: Grafiati
Published: 4 June 2021
Last updated: 2 February 2022

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Journal articles on the topic "Hydromechanical Transmissions"

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Yang, Shujun, Yong Bao, Xianzhi Tang, Xiaojuan Jiao, Deqing Yang, and Qing Wang. "Integrated Control of Hydromechanical Variable Transmissions." Mathematical Problems in Engineering 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/290659.

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A hydromechanical variable transmission (HMT) has advantages of continuous variation and high efficiency. So it is one of the ideal transmissions of heavy vehicles. The continuous speed varying process involves speed governing in range and range shift. Integrated control strategy of the HMT is proposed in this paper. The algorithm of the asymmetric saturated incremental proportional integral derivative (PID) speed control strategy in range and range shift conditions are derived. And this paper presents the range shift logic and range shift control strategies. A controller model is built in Matlab Simulink and cosimulated with the model of vehicle equipped with a two-range HMT. The HMT prototype hardware-in-the-loop simulation (HILS) platform of the integrated control strategy is built. The HILS results show that the range shift process is smooth and speed fluctuation does not happen. In the throttle stable stage, the engine speed is adjusted to the near optimal speed, and its change rules are in accordance with simulation results. The integrated control strategy is reasonable.
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Eruslankin, S. A., G. S. Mazlumyan, R. V. Yushchuk, A. N. Sova, and T. V. Sevast’yanova. "Hydromechanical Transmissions of Heavy-Duty Trucks." Russian Engineering Research 41, no. 6 (June 2021): 564–66. http://dx.doi.org/10.3103/s1068798x2106006x.

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Rynkevich, S. A. "New methods of diagnosis of hydromechanical transmissions." Вестник Белорусско-Российского университета, no. 2 (2009): 44–52. http://dx.doi.org/10.53078/20778481_2009_2_44.

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Tarasik, Vladimir Petrovich, Olga Alexandrovna Shapovalova, Vladimir Vladislavovich Reginya, and Roman Vladimirоvich Pliakin. "DESIGNING OF FRICTION CLUTCHES OF HYDROMECHANICAL TRANSMISSIONS." Вестник Белорусско-Российского университета, no. 4 (2011): 107–16. http://dx.doi.org/10.53078/20778481_2011_4_107.

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Rossetti, Antonio, Alarico Macor, and Martina Scamperle. "Optimization of components and layouts of hydromechanical transmissions." International Journal of Fluid Power 18, no. 2 (March 13, 2017): 123–34. http://dx.doi.org/10.1080/14399776.2017.1296746.

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Rynkevich, S. A. "Automation of control and diagnosing of hydromechanical transmissions." Вестник Белорусско-Российского университета, no. 1 (2009): 22–29. http://dx.doi.org/10.53078/20778481_2009_1_22.

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Antipenko, Grigory Leonidovich. "PULSE SYSTEMS OF HYDROMECHANICAL TRANSMISSIONS CONTROL AND DIAGNOSTICS." Вестник Белорусско-Российского университета, no. 4 (2013): 5–16. http://dx.doi.org/10.53078/20778481_2013_4_5.

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Tarasik, Vladimir Petrovich, Nikolai Nikolayevich Gorbatenko, and Roman Vladimirоvich Pliakin. "THE SYSTEM FOR MONITORING THE TECHNICAL CONDITION OF HYDROMECHANICAL TRANSMISSIONS." Вестник Белорусско-Российского университета, no. 3 (2013): 46–56. http://dx.doi.org/10.53078/20778481_2013_3_46.

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Larsson, L. Viktor, Liselott Ericson, Karl Uebel, and Petter Krus. "Low-Level Control of Hybrid Hydromechanical Transmissions for Heavy Mobile Working Machines." Energies 12, no. 9 (May 4, 2019): 1683. http://dx.doi.org/10.3390/en12091683.

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Fuel efficiency has become an increasingly important property of heavy mobile working machines. As a result, Hybrid Hydromechanical Transmissions (HMTs) are often considered for the propulsion of these vehicles. The introduction of hybrid HMTs does, however, come with a number of control-related challenges. To date, a great focus in the literature has been on high-level control aspects, concerning optimal utilization of the energy storage medium. In contrast, the main topic of this article is low-level control, with the focus on dynamic response and the ability to realize requested power flows accurately. A static decoupled Multiple-Input-Multiple-Output (MIMO) control strategy, based on a linear model of a general hybrid HMT, is proposed. The strategy is compared to a baseline approach in Hardware-In-the-Loop (HWIL) simulations of a reference wheel loader for two drive cycles. It was found that an important benefit of the decoupled control approach is that the static error caused by the system’s cross-couplings is minimized without introducing integrating elements. This feature, combined with the strategy’s general nature, motivates its use for multiple-mode transmissions in which the transmission configuration changes between the modes.
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Tarasik, V. P., K. N. Kuskov, N. N. Gorbatenko, and S. V. Kusnetsov. "Elaboration of perspective automatic control systems for hydromechanical transmissions of vehicles." Вестник Белорусско-Российского университета, no. 4 (2006): 46–51. http://dx.doi.org/10.53078/20778481_2006_4_46.

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Dissertations / Theses on the topic "Hydromechanical Transmissions"

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Pettersson, Karl. "Design Automation of Complex Hydromechanical Transmissions." Licentiate thesis, Linköpings universitet, Fluida och mekatroniska system, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-99382.

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This thesis proposes an automated methodology for the design of complex multiple-mode hydromechanical transmissions. High fuel prices and strict emission regulations are today drivers of the development of new fuel-efficient drive transmissions for construction machinery. Hydromechanical transmissions have high energy efficiency and a wide torque/speed conversion range. They are today strong candidates to replace the fuel-thirsty torque converters conventionally used in heavy construction machines. The trend towards more complex transmission architectures increases the need for more sophisticated product development methods. Complex multiple-mode transmissions are difficult to design and prototype and can be realised in a great number of different architectures. This increases the need for reliable concept evaluation in early design stages. The design of the transmission is also strongly coupled to its energy consumption and for a fair comparison  between transmission concepts optimal designs are necessary. Design automation and optimisation with detailed simulation models can support the industrial engineer in the design task and increase the available knowledge early in the design process. The proposed methodology uses simulation-based optimisation to design the transmission for a specific vehicle application. Various aspects of the transmission’s characteristics may be targeted, although energy efficiency is in great focus in this work. To evaluate the energy efficiency, the transmission designs are simulated using backward-facing simulations with detailed power loss models. The methodology is applicable for designing the drive transmissions of construction machines and other mobile working vehicles such as agricultural machines, forest machines and mobile mining equipment.
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Uebel, Karl. "Conceptual Design of Complex Hydromechanical Transmissions." Doctoral thesis, Linköpings universitet, Fluida och mekatroniska system, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-142895.

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This thesis explores the conceptual design process of complex hydromechanical transmissions for mobile working machines. Efficient methods for design optimisation and controller development are presented to support the final concept selection. In the endeavour to develop new fuel-efficient driveline solutions for construction machines and off-road equipment new complex hydromechanical transmission concepts are being investigated. This pursuit is driven by stricter emission legislation, high fuel prices and a desire for a greener image both for customers and manufacturers. The trend towards more complex transmission architectures increases the need for more sophisticated product development methods. Complex multiple-mode transmissions are difficult to design and prototype and can be realised in a great number of architectures. By introducing a secondary energy storage in the machine the design space expands further for both hardware and software. There is accordingly a need for more reliable concept assessment in early design stages and the possibility to support concurrent engineering throughout the development process. Previous research on the design and development of hydromechanical transmissions has been limited to analysis of fixed concept designs or design optimization using very simple performance indicators. Existing methodologies for electrified on-road vehicles are not suitable for off-road working machines with hydromechanical transmissions and hydraulic energy storage. The proposed conceptual design process uses detailed quasi-static simulation models and targets to optimise the fuel efficiency of the specific machine specifications and operations. It is also shown how high-speed dynamic simulations can be used for controller development and hardware-in-the-loop simulations to support an efficient product design process. The methods are demonstrated for typical use cases targeting new transmission development for construction machines. Software control development is also treated using control optimisation and real-time simulation. Finally a novel hybrid hydromechanical motion system is presented for which an efficient design process is crucial to its end performance.

In the printed verison the series name Linköping studies in Arts and Science is incorrect. The correct series name is Linköping studies in science and technology. Dissertations.

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Larsson, Viktor, Liselott Ericson, and Petter Krus. "Hardware-in-the-loop simulation of hybrid hydromechanical transmissions." Technische Universität Dresden, 2020. https://tud.qucosa.de/id/qucosa%3A71075.

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Increased demands on fuel-efficient propulsion motivate the use of complex hybrid hydromechanical transmissions in heavy construction machines. These transmissions offer attractive fuel savings but come with an increased level of complexity and dependency on computer-based control. This trend has increased the use of computer-based simulations as a cost-effective alternative to hardware prototyping when developing and testing control strategies. Hardware-In-the-Loop (HWIL) simulations that combine physical and virtual model representations of a system may be considered an attractive compromise that combine the benefits of these two concepts. This paper explores how HWIL simulations may be used to evaluate powertrain control strategies for hybrid hydromechanical transmissions. Factors such as hardware/software partitioning and causality are discussed and applied to a test rig used for HWIL simulations of an example transmission. The results show the benefit of using HWIL simulations in favour of pure offline simulations and prototyping and stress the importance of accurate control with high bandwidth in the HWIL interface.
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Larsson, L. Viktor. "Control Aspects of Complex Hydromechanical Transmissions : with a Focus on Displacement Control." Licentiate thesis, Linköpings universitet, Fluida och mekatroniska system, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-139855.

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This thesis deals with control aspects of complex hydromechanical transmissions. The overall purpose is to increase the knowledge of important aspects to consider during the development of hydromechanical transmissions to ensure transmission functionality. These include ways of evaluating control strategies in early design stages as well as dynamic properties and control aspects of displacement controllers, which are key components in these systems. Fuel prices and environmental concerns are factors that drive research on propulsion in heavy construction machinery. Hydromechanical transmissions are strong competitors to conventional torque-converter transmissions used in this application today. They offer high efficiency and wide speed/torque conversion ranges, and may easily be converted to hybrids that allow further fuel savings through energy recuperation. One challenge with hydromechanical transmissions is that they offer many different configurations, which in turn makes it important to enable evaluation of control aspects in early design stages. In this thesis, hardware-in-the-loop simulations, which blend hardware tests and standard software-based simulations, are considered to be a suitable method. A multiple-mode transmission applied to a mid-sized construction machine is modelled and evaluated in offline simulations as well as in hardware-in-the-loopsimulations. Hydromechanical transmissions rely on efficient variable pumps/motors with fast, accurate displacement controllers. This thesis studies the dynamic behaviour of the displacement controller in swash-plate axial-piston pumps/motors. A novel control approach in which the displacement is measured with an external sensor is proposed. Performance and limitations of the approach are tested in simulations and in experiments. The experiments showed a significantly improved performance with a controller that is slightly more advanced than a standard proportional controller. The implementation of the controller allows simple tuning and good predictability of the displacement response.
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Larsson, Viktor, and L. Viktor Larsson. "Simulation and Testing of Energy Efficient Hydromechanical Drivlines for Construction Equipment." Thesis, Linköpings universitet, Fluida och mekatroniska system, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-107495.

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Increased oil prices and environmental issues have increased a need of loweringthe emissions from and the fuel consumption in heavy construction machines. Anatural solution to these issues is a lowered input power through downsizing ofthe engine. This implies a demand on higher transmission efficiency, in order tominimize the intrusion on vehicle performance. More specifically, alternatives tothe conventional torque converter found in heavier applications today, must beinvestigated. One important part of this is the task of controlling the transmissionwithout jeopardising the advantages associated with the torque converter, such asrobustness and controllability.In this thesis, an alternative transmission concept for a backhoe loader is investigated.The studied concept is referred to as a 2-mode Jarchow power-splittransmission, where a mechanical path is added to a hydrostatic transmission inorder to increase transmission efficiency. The concept is evaluated in computerbased simulations as well as in hardware-in-the-loop simulations, where a physicalhydrostatic transmission is exposed for the loads caused by the vehicle duringvarying conditions. The loads are in turn simulated according to developed modelsof the mechanical parts of the vehicle drive line.In total, the investigated concept can be used instead of the torque converterconcept, if the hydrostatic transmission is properly controlled. The results alsoshow that there is a high possibility that the combustion engine in the backhoeloader can be downsized from 64 kW to 55 kW, which would further increase thefuel savings and reduce the emissions.
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Books on the topic "Hydromechanical Transmissions"

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International Symposium on Hydromechanics and Heat/Mass Transfer in Microgravity (1st 1991 Permʹ, Russia, and Moscow, Russia). Hydromechanics and heat/mass transfer in microgravity: Reviewed proceedings of the First International Symposium on Hydromechanics and Heat/Mass Transfer in Microgravity : Perm - Moscow, Russia, 6-14 July 1991. Amsterdam: Gordon and Breach Science Publishers, 1992.

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Euromech Colloquium (327 1994 Institute of Hydromechanics, National Academy of Sciences of Ukraine, Kiev). Effects of organized vortex motion on heat and mass transfer: Book of abstracts : Euromech Colloquium 327, August 25-27, 1994, Institute of Hydromechanics, National Academy of Sciences of Ukraine, Kiev. Kiev: Opechatano v In-te matematiki AN Ukrainy, 1994.

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Conference papers on the topic "Hydromechanical Transmissions"

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Larsson, L. Viktor, Karl Pettersson, and Petter Krus. "Mode Shifting in Hybrid Hydromechanical Transmissions." In ASME/BATH 2015 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/fpmc2015-9583.

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Demands for low cost sustainable solutions have increased the use of and interest in complex hydromechanical transmissions for heavy off-road vehicles. In transmissions with multiple modes, an important condition is to maintain the tractive force during the mode shifting event. For hybrid hydromechanical transmissions, with a direct connection to a hydraulic accumulator, the impressed system pressure caused by the hydraulic accumulator has not yet been observed to interfere with this condition. In this paper, a black box model approach is used to modify the hydraulic system after obtaining knowledge regarding how it is affected by a mode shift. A comparative study is carried out where a full vehicle model of a mobile working machine is simulated with two different hydraulic systems. The results show that different system solutions imply different demands on the included components, and that the mode shifting event is not a negligible factor in heavy hydraulic hybrid vehicles.
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Pettersson, Karl, and Petter Krus. "Modular Design of Hydromechanical Transmissions for Mobile Working Machines." In 13th Scandinavian International Conference on Fluid Power, June 3-5, 2013, Linköping, Sweden. Linköping University Electronic Press, 2013. http://dx.doi.org/10.3384/ecp1392a12.

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Larsson, Viktor, Liselott Ericson, and Petter Krus. "Hardware-in-the-loop simulation of hybrid hydromechanical transmissions." In 12th International Fluid Power Conference. Technische Universität Dresden, 2020. http://dx.doi.org/10.25368/2020.14.

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Krasnevski, L., M. Vysotski, and V. Boikov. "The Safety of Mechatronic Control Systems for Hydromechanical Transmissions." In International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1999. http://dx.doi.org/10.4271/1999-01-1049.

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Larsson, L. Viktor, and Petter Krus. "Hardware-in-the-loop Simulation of Complex Hybrid Hydromechanical Transmissions." In WIEFP2018 – 4th Workshop on Innovative Engineering for Fluid Power, November 28-30, Sao Paulo, Brazil. Linköping University Electronic Press, 2018. http://dx.doi.org/10.3384/ecp1815669.

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Krasnevski, L., M. Vysotski, and V. Boikov. "The Universal Control and Protection Hydraulic Automaton for Hydromechanical Transmissions." In SAE 2001 World Congress. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2001. http://dx.doi.org/10.4271/2001-01-0879.

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Larsson, L. Viktor, and Petter Krus. "A General Approach to Low-Level Control of Heavy Complex Hybrid Hydromechanical Transmissions." In BATH/ASME 2018 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/fpmc2018-8877.

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This paper focuses on the low-level control of heavy complex hydraulic hybrids, taking stability and the dynamic properties of the included components into account. A linear model which can describe a high number of hybrid configurations in a straightforward manner is derived and used for the development of a general multiple input multiple output (MIMO) decoupling control strategy. This strategy is tested in non-linear simulations of an example vehicle and stability requirements for the low-level actuators are derived. The results show that static decoupling may be used to simplify the control problem to three individual loops controlling pressure, output speed and engine speed. In particular, the pressure and output speed loops rely on fast displacement controllers for stability. In addition, it was found that the decoupling is facilitated if the hydrostatic units have equal response. The low-level control of heavy complex hydraulic hybrids may thus imply other demands on actuators than what is traditionally assumed.
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Krasnevski, Leonid. "The Synthesis Method of Electro-Hydraulic Schemes of Mechatronic Control Systems for Hydromechanical Transmissions." In SAE 2003 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2003. http://dx.doi.org/10.4271/2003-01-0319.

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Pohl, Brad. "CVT Split Power Transmissions, A Configuration Versus Performance Study with an Emphasis on the Hydromechanical Type." In SAE 2002 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2002. http://dx.doi.org/10.4271/2002-01-0589.

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Turner, Will, and Scott Anderson. "A “Back-to-Back” Comparison of Currently Available Hydromechanical Transmissions – Utilising Boeing Easy 5™ Mathematical Modelling with the Ricardo Powertrain Library." In International Off-Highway & Powerplant Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1998. http://dx.doi.org/10.4271/981987.

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You might also be interested in the extended bibliographies on the topic 'Hydromechanical Transmissions' for particular source types:
Journal articles
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