Embedded electrohydraulic controller with digital valve actuation for steering of heavy duty machines

The paper presents the design and synthesis of a three-loop cascade control system with a digital PI controller intended for installation in a test bench for load-sensing electrohydraulic steering units. The structure and layout of both the hydraulic system and the control system are shown. The cascade control system consists of three controllers for measurable variables: proportional spool valve position, steering velocity and steering cylinder position. The developed control algorithm is embedded into a 32-bit microcontroller for mobile applications. Experimental studies have been carried out to present the performance of the entire electrohydraulic system. The developed control algorithm will serve as a basis for further study of the system with advanced control techniques implementable in low speed mobile machines.

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“…The corresponding control action sent from the microcontroller to the switching valve module (PVE) [10] is shown on Fig. 9.…”

Section: Pre-programmed Reference Signalmentioning

confidence: 99%

Cascade control algorithm of test bench for studying loadsensing electrohydraulic steering systems

2018

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“…Kwangseok Oh, Salem Haggag, Mattia Rigotti-Thompson and others improved steering performance and reduced energy consumption by adding control algorithms to hydraulic controller [17]. Kwangseok Oh, Salem Haggag, Mattia Rigotti-Thompson and others improved steering performance and reduced energy consumption by adding control algorithms to hydraulic steering systems [18][19][20][21][22]. The theories put forward by the above-mentioned researchers provide theoretical support for the optimization of hydraulic steering systems.…”

Section: Introductionmentioning

confidence: 98%

Research on Steering Vibration Analysis of Wheel Loader and Cushion Valve Design

Wang

Zhu

et al. 2022

Energies

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At present, the wheel loaders on the market have steering vibration problems, which can be summarized as follows: the front frame and the cab vibrate violently at the beginning and at the end of steering. This paper analyzed the steering vibration mechanism by collecting the pressure at different positions of the hydraulic steering system and AMESim simulation. A cushion valve was designed to solve the problem of steering vibration. Finally, the prototype test was carried out and it was concluded that the cushion valve reduced the steering pressure starting shock by 50%, the stop vibration was reduced by 75%, and the suction problem no longer occurred. Further, the analysis provides theoretical and experimental basis for research on the steering system of loaders, and also provides new ideas for the design and optimization of vehicle steering systems.

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Identification of Humanoid Biped Robot During Walking with Linear Regression Models

Sherif

Kanchev

2019

2019 22nd International Conference on Process Control (PC19)

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Embedded electrohydraulic controller with digital valve actuation for steering of heavy duty machines

Cited by 3 publications

References 3 publications

Cascade control algorithm of test bench for studying loadsensing electrohydraulic steering systems

Cascade control algorithm of test bench for studying loadsensing electrohydraulic steering systems

Research on Steering Vibration Analysis of Wheel Loader and Cushion Valve Design

Identification of Humanoid Biped Robot During Walking with Linear Regression Models

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