Development of integrated electro-hydraulic braking system and its ABS application

Tan, Zhi-Hui; Chen, Zhenfu; Pei, Xiaofei; Guo, Xuexun; Pei, Shuang-Hong

doi:10.1007/s12541-016-0042-8

Cited by 12 publications

(10 citation statements)

References 7 publications

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“…The control law in (17) contains two input variables, u 1 and u 2 , which are the PWM duty cycles of the inlet and outlet valve, respectively. During brake control, the inlet and outlet valves should operate in coordination.…”

Section: Control Lawsmentioning

confidence: 99%

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Nonlinear Backstepping Control of Electro-Hydraulic Brake System Based on Bond Graph Model

et al. 2020

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EHB (electro-hydraulic brake system) can provide active and decoupled brake for electric intelligent vehicles. However, modelling and control of automotive electro-hydraulic brake systems are always challenging due to the complex and highly nonlinear dynamic characteristics of the braking process. In this paper, a nonlinear backstepping control algorithm for EHB based on the bond graph model is introduced. A nonlinear, single-wheel brake system model is constructed using the bond graph method, in which the capacitive effect of the hydraulic fluid and the damping and inertia effects of calipers are considered. Based on this nonlinear model, a backstepping controller with good robustness is designed, and the control signals of the inlet and outlet valves are described by a unified expression. Moreover, the effects of the controller parameters on brake-pressure control are discussed in details, and suitable design parameters are chosen. Finally, the proposed algorithm is verified by the simulation and hardware-in-the-loop tests. The results show that valves are properly regulated by the backstepping controller, and the brake pressure follows the desired value rapidly and accurately. INDEX TERMS Backstepping, bond graph model, electro-hydraulic brake system (EHB), nonlinear control.

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Section: Control Lawsmentioning

confidence: 99%

“…In pressure building, the inlet valve is open and the outlet valve is closed. That is, u 2 = 0, and u 1 can be calculated by (17). In pressure dumping, the inlet valve is closed and the outlet valve is open.…”

Section: Control Lawsmentioning

confidence: 99%

Nonlinear Backstepping Control of Electro-Hydraulic Brake System Based on Bond Graph Model

et al. 2020

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“…Therefore, it is indicated that the control system in the linear space after transformation is stable. But, due to the chattering with which the sign function would bring to the system, so, it is replaced by the boundary layer function to weaken the chattering [20]. The boundary layer function is demonstrated as Eq.…”

Section: Actuator Design and Model Establishmentmentioning

confidence: 99%

Sliding Mode Control of Hydraulic Pressure in Electro-Hydraulic Brake System Based on the Linearization of Higher-Order Model

Chen¹,

Sun²,

Wang³

et al. 2020

Fluid Dynamics &Amp; Materials Processing

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The possibility to enhance the stability and robustness of electrohydraulic brake (EHB) systems is considered a subject of great importance in the automotive field. In such a context, the present study focuses on an actuator with a four-way sliding valve and a hydraulic cylinder. A 4-order nonlinear mathematical model is introduced accordingly. Through the linearization of the feedback law of the high order EHB model, a sliding mode control method is proposed for the hydraulic pressure. The hydraulic pressure tracking controls are simulated and analyzed by MATLAB/Simulink soft considering separately different conditions, i.e., a sine wave, a square wave and a square wave with superimposed sine disturbance. The results show that the proposed strategy can track the target within 0.25 s, and the mean observed error is less than 1.2 bar. Moreover, with such a strategy, faster response and less overshoot are possible, which should be regarded as significant advantages.

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“…A few studies have reported the use of electro hydraulic control [4][5][6] for breaking systems [7,8], as listed in Table 1. Moreover, there in an increasing demand for the improvement of construction equipment efficiency, coinciding with the emergence of new environmental regulation standards in many countries.…”

Section: Introductionmentioning

confidence: 99%

A Novel Predictable Rock Breaker Using Intelligent Hydraulic Control with ICT Convergences

Yoon¹,

Lee²,

Lee

2019

Applied Sciences

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In this paper, a hydraulic breaker system is suggested with optimized impact forces and with active control to improve the system’s energy efficiency. While performing operations such as demolition, rock pulverization, and ground hammering, the consistent breaking force causes energy dissipation due to the various strengths of the bedrock. Moreover, if the ground condition is not monitored, this may lead to catastrophic damage to the whole system. Moreover, frequent part changes can result in fatal malfunction. Therefore, a novel rock breaker is needed that is able to predict target properties of the rock in order to perform at the optimal impact force. The characteristics of rock forecasts obtained by a proximity sensor can determine the depth at which the piston stroke will reach the object. Moreover, a cascade control system for multiple levels of impact points, included operating and monitoring modules, is developed by applying ICT convergence through a wireless communication system. Consequently, adequate results were obtained from the applied field test on the feasibility of the suggested breaking system, thus confirming the possibility of applying this system in conventional heavy industries.

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Development of integrated electro-hydraulic braking system and its ABS application

Cited by 12 publications

References 7 publications

Nonlinear Backstepping Control of Electro-Hydraulic Brake System Based on Bond Graph Model

Nonlinear Backstepping Control of Electro-Hydraulic Brake System Based on Bond Graph Model

Sliding Mode Control of Hydraulic Pressure in Electro-Hydraulic Brake System Based on the Linearization of Higher-Order Model

A Novel Predictable Rock Breaker Using Intelligent Hydraulic Control with ICT Convergences

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