System Identification of an Electrohydraulic Steering System

Qiu, Hongchu; Zhang, Qin; Reid, John F.; Wu, Duqiang

doi:10.4271/1999-01-2854

Cited by 5 publications

(3 citation statements)

References 4 publications

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“…The modi cation was to add a proportional steering control EH valve, a pulse width modulated (PWM ) EH valve driver and an electronic controller in parallel to the existing hand-pump driven steering valve to perform automated steering control. To model an EH steering system without loss of generality, this research used an EH valve controlled hydraulic cylinder mass actuating system to simplify the actual vehicle hydraulic steering system [7,9]. As shown in Fig.…”

Section: Electrohydraulic Steering System Modelmentioning

confidence: 99%

“…It reduces the gains of the PID controller when the feedforward controller is active and resumes the normal gain when the feedforward controller is inactive the control variable was the cylinder velocity, a steering linkage gain factor K SL , determined on the basis of the steering linkage geometry [9], was used to de ne the relationship between the cylinder velocity and the steering angle rate.…”

Section: Steering Controller Designmentioning

confidence: 99%

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Feedforward-plus-proportional-integral-derivative controller for an off-road vehicle electrohydraulic steering system

Qiu

Zhang

2003

Proceedings of the Institution of Mechanical Engineers, Part D:

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This paper presents the use of a feedforward-plus-proportional-integral-derivative ( FPID) controller for improving the control performance of the electrohydraulic steering system on an oroad vehicle. The FPID controller used an inverse valve transform in the feedforward loop to compensate for an electrohydraulic steering system deadband and used a conventional PID feedback loop to minimize the tracking error in steering control. On-simulator evaluation tests veri ed that the FPID resulted in a superior steering rate tracking performance over both a feedforward controller and a PID controller. On-vehicle evaluation tests veri ed that this FPID controller could achieve prompt and accurate steering angle tracking for agricultural vehicle automated guidance applications.

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Section: Electrohydraulic Steering System Modelmentioning

confidence: 99%

Section: Steering Controller Designmentioning

confidence: 99%

Feedforward-plus-proportional-integral-derivative controller for an off-road vehicle electrohydraulic steering system

Qiu

Zhang

2003

Proceedings of the Institution of Mechanical Engineers, Part D:

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show abstract

“…Therefore, steering control system could be further simplified as a second order model. With the consideration of friction and steering loads, a system time delay term could be added in order to improve the model accuracy [24]. So with the control voltage signal ( ) as the control input and the guide wheel angular position Φ( ) as the control output, the open-loop transfer function of the electrohydraulic steering system model can be simplified as…”

Section: Modeling Of Steering Systemmentioning

confidence: 99%

Development of Electrohydraulic Steering Control System for Tractor Automatic Navigation

Yin

Sun

et al. 2018

Journal of Electrical and Computer Engineering

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The most of tractors employed in agriculture are equipped with an electrohydraulic actuator to implement steering control to realize automatic navigation. Electrohydraulic steering system plays an important role in realizing accurate steering control for an automatic navigation tractor because of its complicated characteristics. The objective of this paper is to develop an electrohydraulic steering control system used for automatically guided agricultural tractors. As for the identified electrohydraulic steering system model, a modified Smith control structure was discussed. Based on the structure, an improved design method for voltage servo controller and disturbance rejection controller was proposed to enhance the performance of the steering control subsystem. The effectiveness and the superiority of the proposed method were verified by simulation under Matlab. Simulation results demonstrated the efficiency of the proposed method by showing fast response, control accuracy, and robust performance for the steering control system.

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Application of Electrohydraulic Proportional Valve for Steering Improvement of an Autonomous Tractor

et al. 2022

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System Identification of an Electrohydraulic Steering System

Cited by 5 publications

References 4 publications

Feedforward-plus-proportional-integral-derivative controller for an off-road vehicle electrohydraulic steering system

Feedforward-plus-proportional-integral-derivative controller for an off-road vehicle electrohydraulic steering system

Development of Electrohydraulic Steering Control System for Tractor Automatic Navigation

Application of Electrohydraulic Proportional Valve for Steering Improvement of an Autonomous Tractor

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