Integrated wheel loader simulation model for improving performance and energy flow

Oh, Kwangseok; Kim, Hakgu; Ko, Kyungeun; Kim, Panyoung; Yi, Kyongsu

doi:10.1016/j.autcon.2015.07.021

Cited by 47 publications

(23 citation statements)

References 11 publications

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“…The most common working manner for a wheel loader is the V-type route that consists of five segments [15,16]. That is, the operator implements the task repeatedly according to the V-type route.…”

Section: Operating Modementioning

confidence: 99%

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Achievement of Fuel Savings in Wheel Loader by Applying Hydrodynamic Mechanical Power Split Transmissions

et al. 2017

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Abstract:The fuel economy of wheel loaders is deeply affected by the efficiency of their propelling transmissions, however, the torque converter (TC) in existing propelling transmissions is a low-efficiency component and leads to excessive energy consumption. Accordingly, this paper replaces the TC with a hydrodynamic mechanical power split transmission (HMPST) for improving the fuel economy of wheel loader. Based on probability similarity theory, the typical operating mode for the vehicles is constructed, which is used to evaluate the energy consumption performance of the selected solutions. The four reasonable solutions, which can be initially applied to wheel loaders, are selected from among the HMPSTs using the lever diagram. Furthermore, the comparisons on efficiency and loading characteristics between these four solutions and a prototype TC are conducted. The design optimization for all the four solutions is implemented, in order to find the optimal fuel saving solution relative to the prototype TC, and only one solution with pure power split can meet the constraints. Finally, a simulation model of the wheel loader powertrain is established for validating the effectiveness of this optimal solution. The results show that the optimized solution can effectively improve the fuel economy of wheel loaders compared to the prototype TC and provides a novel substitute for current technology.

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Section: Operating Modementioning

confidence: 99%

“…Existing studies show that the ratio of average input power of the propelling transmission system to that of the working hydraulics system is about 1.5 [15,18], so the relationships between w i1 and w i2 are given as follows:…”

Section: Objective Functionsmentioning

confidence: 99%

Achievement of Fuel Savings in Wheel Loader by Applying Hydrodynamic Mechanical Power Split Transmissions

et al. 2017

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“…Moreover, the fuel consumption is reduced evidently in stages-1 and 3 since the wheel loader driving motion that requires clutch control is dominant in stages-1 and 3. In addition to the conducted performance evaluation, a cost analysis of energy, working, and steering effort can be performed to select the optimized working path [23]. Based on simulation results analysis, the AMT-and DCT-based wheel loaders yield better fuel efficiencies than the T/C-based wheel loader.…”

Section: Tablementioning

confidence: 99%

“…The wheel loader that is the subject of this study also utilizes a torque converter for automotive transmission. Moreover, it is analyzed that the energy loss by fluid frictional force in the torque converter is dominant by using the wheel loader simulation model with a driver model based on typical V-pattern working [23]. The used simulation model for analysis has been constructed in the Matlab/ Simulink environment and validated from experimental test data [7].…”

Section: Modeling and Analysis Of Wheel Loadermentioning

confidence: 99%

Gear ratio and shift schedule optimization of wheel loader transmission for performance and energy efficiency

Yun

et al. 2016

Automation in Construction

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“…Also, since in this paper the mode sequence is enforced, by a change of mode sequence, one can generate the results reported in [15] in a closed loop feedback policy. Compared to [16], [17], this paper provides the optimal policy in the whole time horizon rather than non-optimal control methods. In [18] optimal control of a wheel loader for gravel application was performed with dynamic programming.…”

mentioning

confidence: 99%

Sub-Optimal Control of Autonomous Wheel Loader With Approximate Dynamic Programming

Sardarmehni

Song

2019

Volume 3, Rapid Fire Interactive Presentations: Advances in Control Systems; Advances in Robotics and Mechatronics; Automotive

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Optimal control of wheel loaders in short loading cycles is studied in this paper. For modeling the wheel loader, the data from a validated diesel engine model is used to find a control oriented mean value engine model. The driveline is modeled as a switched system with three constant gear ratios (modes) of −60 for backwarding, 60 for forwarding, and zero for stopping. With these three modes, the sequence of active modes in a short loading cycle is fixed as backwarding, stopping, forwarding, and stopping. For the control part, it is assumed that the optimal path is known a priori. Given the mode sequence, the control objective is finding the optimal switching time instants between the modes while the wheel loader tracks the optimal path. To solve the optimal control problem, approximate dynamic programming is used. Simulation results are provided to show the effectiveness of the solution.

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Integrated wheel loader simulation model for improving performance and energy flow

Cited by 47 publications

References 11 publications

Achievement of Fuel Savings in Wheel Loader by Applying Hydrodynamic Mechanical Power Split Transmissions

Achievement of Fuel Savings in Wheel Loader by Applying Hydrodynamic Mechanical Power Split Transmissions

Gear ratio and shift schedule optimization of wheel loader transmission for performance and energy efficiency

Sub-Optimal Control of Autonomous Wheel Loader With Approximate Dynamic Programming

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