Robust control and modelling of a heavy equipment variable displacement pump hydraulic system

Haggag, Salem

doi:10.1504/ijhvs.2011.041595

Cited by 3 publications

(4 citation statements)

References 11 publications

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“…In Figure 3, a piston pump (2) driven by a fixedspeed electric motor (1) delivers pressurized fluid to a variable displacement bent axis hydro-motor (3). The adjustment of the pump displacement ratio (b pd ) or pump displacement ratio (b md ) leads to the variation in the speed of the hydro-motor (3) which in turn drives the loading pump (4) that supplies fluid to the proportional pressure relief valve (5). The loading circuit provides inertia and viscous load on the hydromotor (3).…”

Section: Comparison Of the Model With Experimental Outcome And Discusmentioning

confidence: 99%

“…The loading circuit provides inertia and viscous load on the hydromotor (3). By adjusting the pressure setting of the proportional pressure relief valve (5) or the displacement of the pump (4), the load torque on the hydromotor is varied. The controller gives the command signal that varies from 0 to 10 V DC to adjust the displacement of the pumps, hydro-motor, and the set pressure of the proportional pressure relief valve (PPRV) for a targeted speed and torque output of the drive.…”

Section: Comparison Of the Model With Experimental Outcome And Discusmentioning

confidence: 99%

“…Rahmfeld and Skirde 4 have described the efficiency measurement and loss modeling of HST units, where they have concluded that a precise measurement in combination with reliable modeling gives a useful database for designing HST system. A robust control of variable displacement hydraulic pump system is presented by Haggag, 5 where the system uncertainty such as leakage is considered. Vanwalleghem et al 6 have proposed an approach for optimization procedure of the speed control of an HST drive train which is validated through experiment.…”

Section: Introductionmentioning

confidence: 99%

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Theoretical and experimental studies of the steady-state performance of a primary and secondary-controlled closed-circuit hydrostatic drive

Pandey

Vardhan

Dasgupta

2019

Proceedings of the Institution of Mechanical Engineers, Part E:

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In this article, performance of a closed-circuit hydrostatic drive in primary and secondary mode of operations has been studied through theory and experiment. This drive consists of a variable displacement pump that supplies pressurized fluid to a variable displacement hydro-motor of bent axis design. Bond graph simulation method is adopted for system modeling. In the model, the losses of the drive are accounted by suitable resistive elements, and their characteristics are identified through experiments. The predicted drive’s performances are studied with respect to the overall efficiency, torque loss (%), and slip at different torque levels which are also validated experimentally. The investigation made in the article identifies the efficient zone of operation of the drive which will be useful to the practicing engineers to select such a drive used in heavy constructional equipment. From the steady-state performance of the pump and the motor, their critical control parameters are identified. The studies may be useful for the design of the suitable control strategy to obtain the optimum performance of the drives.

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Section: Comparison Of the Model With Experimental Outcome And Discusmentioning

confidence: 99%

Section: Comparison Of the Model With Experimental Outcome And Discusmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Theoretical and experimental studies of the steady-state performance of a primary and secondary-controlled closed-circuit hydrostatic drive

Pandey

Vardhan

Dasgupta

2019

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…Do and Ahn 11 have studied the control performance of a secondary controlled hydraulic drive where speed of the drive varies by regulating the displacement of the hydraulic motor using a fuzzy sliding mode controller which has been compared with the PID controller. Haggag 12 has described in detail the architecture and configuration of the variable displacement hydraulic pump. The study proposes a robust control strategy for displacement control of the hydraulic system that effectively compensates for various uncertainties and un-modeled dynamics.…”

Section: Introductionmentioning

confidence: 99%

Steady-state performance investigation of closed-circuit hydrostatic drive using variable displacement pump and variable displacement motor

Singh

Pandey

Dasgupta

2020

Proceedings of the Institution of Mechanical Engineers, Part E:

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This article investigates the steady-state performance of a closed-circuit hydrostatic (HST) drive using a variable displacement pump and a variable displacement motor where the speed of the drive is varied by controlling pump or motor. The drive is operated over a wide range of load torque and speed in two modes of operation: the pump controlled mode and the motor controlled mode. The efficiencies of the pump, motor, and the prime mover driving the pump are taken into account to analyze the overall performance of the drive. In this respect, considering various flow and torque losses of the HST drive components, the equations representing efficiencies of the drive are identified by comparing with the experimental data. The simulation is carried out using MATLAB. The results of the study may be useful to identify the control parameters of the drive to operate it at a reasonable efficiency zone.

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Characteristic analysis of pump controlled motor speed servo in the hydraulic hoister

Ding

Zhao

2013

IJMIC

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Robust control and modelling of a heavy equipment variable displacement pump hydraulic system

Cited by 3 publications

References 11 publications

Theoretical and experimental studies of the steady-state performance of a primary and secondary-controlled closed-circuit hydrostatic drive

Theoretical and experimental studies of the steady-state performance of a primary and secondary-controlled closed-circuit hydrostatic drive

Steady-state performance investigation of closed-circuit hydrostatic drive using variable displacement pump and variable displacement motor

Characteristic analysis of pump controlled motor speed servo in the hydraulic hoister

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