Coordinated control strategy for vehicle electro-hydraulic compound steering system

Guo, Zhiqiang; Wu, Haixiao; Zhao, Wanzhong; Wang, Chunyan

doi:10.1177/0954407020949480

Cited by 11 publications

(5 citation statements)

References 29 publications

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“…Component Failure. Although the types of modern agricultural machinery and equipment are different, the basic structure of the hydraulic system is basically the same, with good consistency [15]. After sorting out and analyzing a large number of agricultural machinery hydraulic system component failures, it is found that in general, hydraulic system component failures can be divided into four categories: power element failure, control element failure, actuator failure, and auxiliary element failure.…”

Section: Failure Analysis Of Agricultural Machinery Hydraulic Systemmentioning

confidence: 99%

Application of Modern Multimedia and Sensing Technology in Fault Detection and Diagnosis of Hydraulic Agricultural Machinery

Jia

Ji-jing

2022

Wireless Communications and Mobile Computing

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In order to solve the problem of fault diagnosis of agricultural machinery hydraulic system, the authors propose an application of modern multimedia and sensing technology in fault detection and diagnosis of hydraulic agricultural machinery. By analyzing the component faults and system faults of the hydraulic system of agricultural machinery, an expert system for fault diagnosis is constructed, and a knowledge base and inference engine suitable for fault diagnosis of the hydraulic system of agricultural machinery are designed. In order to further improve the diagnostic accuracy of the fault diagnosis expert system, a fault diagnosis based on sparse coding is designed, and the sparse coding fault diagnosis results are integrated with the expert system to improve the diagnostic accuracy. The experimental results show that after sparse coding fusion, the fault diagnosis accuracy can be improved to more than 91%. In conclusion, the model meets the requirements of fault diagnosis and puts forward a new idea for the fault diagnosis of agricultural machinery hydraulic system. Make the agricultural machinery and equipment industry develop healthily.

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Section: Failure Analysis Of Agricultural Machinery Hydraulic Systemmentioning

confidence: 99%

Application of Modern Multimedia and Sensing Technology in Fault Detection and Diagnosis of Hydraulic Agricultural Machinery

Jia

Ji-jing

2022

Wireless Communications and Mobile Computing

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“…The structure of EHCS system is shown in Figure 1 (1 steering wheel; 2 steering column; 3 torque sensor; 4 reducing mechanism; 5 motor A; 6 rack and pinion steering gear; 7 power cylinder; 8 storage tanks; 9 the rotary valve; 10 the hydraulic pump; 11 motor B). 18 It is mainly composed of mechanical steering model, electric power model, and hydraulic power model. There are two power-assisting units.…”

Section: Dynamic Modelmentioning

confidence: 99%

Displacement characteristics hierarchical control of electro-hydraulic compound steering for commercial vehicle

Liu

Wang

Zhao

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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The electro-hydraulic compound steering combines the function of electric power steering and hydraulic power steering, which can reduce the energy consumption of steering, ensure the stability of vehicles, and meet the steering demand under unmanned driving. In order to fully coordinate the steering stability and path tracking requirements in the unmanned steering process, this paper proposes a hierarchical control strategy of displacement characteristics for commercial vehicle electro-hydraulic compound steering. The mixed H2/H∞ controller for the vehicle stability is designed in the upper layer, which takes the vehicle yaw rate as the control variable. Based on the motor model and sliding-mode control theory, the sliding-mode variable structure controller of motor angle is designed in the lower layer, and the hydraulic power distribution is completed by estimating the steering resistance torque. Simulation results show that the designed controller can effectively track the yaw rate on the premise of ensuring path tracking effect. Combined with steering torque estimation and hydraulic power distribution rules, it can effectively realize the coordinated control of hydraulic power and motor rotation angle.

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“…Electric Power Steering system (EPS) has been widely used in passenger cars. 1 Compared to hydraulic power steering systems, EPS has the advantages of good steering following performance and low energy consumption. 2 The EPS control strategy directly determines the effectiveness of assistance.…”

Section: Introductionmentioning

confidence: 99%

Research on active disturbance rejection control strategy of electric power steering system under extreme working conditions

Zheng,

Wei

2023

Measurement and Control

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In response to the influence of motor interference, damping, friction, and other uncertain factors on the operation of electric power steering systems under extreme working conditions, this study proposes a control strategy for electric power steering systems based on an active disturbance rejection algorithm. In ADRC, the fastest tracking differentiator is used to arrange the transition process for the target signal, and the extended state observer compensates for the total disturbance in the system. Phase compensation has been performed on the monitoring torque by using the torque differentiation method. The Simulink/Carsim simulation results show that ADRC has significantly improved anti-disturbance performance compared to PID and fuzzy PID. When using ADRC, the tracking accuracy of the assisted current is enhanced by 45.8%–75.8%, and the current adjustment time is reduced by 35.6%–61.7%. After phase compensation, the monitoring torque overshoot is reduced by 83.3%. Therefore, the proposed control strategy improves EPS’s robustness and steering feel.

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Coordinated control strategy for vehicle electro-hydraulic compound steering system

Cited by 11 publications

References 29 publications

Application of Modern Multimedia and Sensing Technology in Fault Detection and Diagnosis of Hydraulic Agricultural Machinery

Application of Modern Multimedia and Sensing Technology in Fault Detection and Diagnosis of Hydraulic Agricultural Machinery

Displacement characteristics hierarchical control of electro-hydraulic compound steering for commercial vehicle

Research on active disturbance rejection control strategy of electric power steering system under extreme working conditions

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