Brake System Component Dynamic Performance Measurement and Analysis

Fisher, D.K.

doi:10.4271/700373

Cited by 25 publications

(20 citation statements)

References 19 publications

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“…The input of the model of the mechanical system of the booster is the push-rod travel, which is due to the brake pedal. The relationships between the pushrod travel and the pedal travel and between the pushrod force and the pedal force are given by 3,18,23 x…”

Section: Dynamic Model Of the Boostermentioning

confidence: 99%

“…Related studies have helped to establish a mathematical model of the brake system for brake pedal feel analysis. For the purpose of development of the vehicle braking performance, Fisher 18 has established comprehensive mathematical models of the brake system components; however, he ignored the structure gaps of the booster and the master cylinder and provided validation of the key component models. Khan et al 19 presented bond graphs of the brake system components, but the frictional forces in the booster and the master cylinder 15,20 were not considered.…”

Section: Introductionmentioning

confidence: 99%

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A dynamic model for brake pedal feel analysis in passenger cars

Meng

Zhang

2015

Proceedings of the Institution of Mechanical Engineers, Part D:

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The brake system of a passenger car is a complex system composed of an assembly of mechanical parts, such as springs and rubber parts, and structures filled with gas and other liquids. In order to predict the brake pedal feel of a passenger car, a dynamic model of a brake system during application of the brake pedal was proposed; this considered and modelled the physical structures and the working processes of the key components. The model takes into account not only the spring preloads and the frictional forces in the booster and the master cylinder but also the reaction disc features and the variation in the bulk modulus of the brake fluid. When the pedal travel is regarded as the input, the boundary conditions for the dynamic equations of the brake system components are strictly defined. Also, bench experiments for the booster and the master cylinders were designed for parameter identification; the effectiveness of the component models was validated under conditions including with and without vacuum assist and with and without brake fluid. On the basis of these experiments, the static and dynamic characteristics of the brake pedal feel were simulated using the static model and the dynamic model of the brake system. Then, vehicle road experiments were carried out. With the assessment index of a three-quadrant diagram covering the pedal travel, the pedal force and the master cylinder pressure, as well as a four-quadrant diagram covering the pedal travel, the pedal force, the master cylinder pressure and the longitudinal deceleration of the vehicle, the results from the simulations and the experiment were compared and analysed. We conclude that this novel model of a brake system can accurately predict the brake pedal feel characteristics of passenger cars and can be used for brake system design and adjustment.

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Section: Dynamic Model Of the Boostermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A dynamic model for brake pedal feel analysis in passenger cars

Meng

Zhang

2015

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…In [63], the author has developed an overall model for the hydraulic brake system by presenting individual models for each major component of the brake system.…”

Section: A Existing Models For Air Brake Systemsmentioning

confidence: 99%

A Diagnostic System for Air Brakes in Commercial Vehicles

Subramanian

Darbha

Rajagopal

2006

IEEE Trans. Intell. Transport. Syst.

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“…For control, the reference models, which describe the response characteristics of an hydraulic brake system with considerable simplicity and accuracy, is necessary. Fisher proposed a relatively complete brake system, but it has 18 state variables and is too complex to be described in a real-time control system [5]. J. Christian Gerdes presented a reduced-order model of brake system dynamics using only one or two hydraulic states to describe brake hydraulics.…”

Section: Introductionmentioning

confidence: 99%

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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Brake System Component Dynamic Performance Measurement and Analysis

Cited by 25 publications

References 19 publications

A dynamic model for brake pedal feel analysis in passenger cars

A dynamic model for brake pedal feel analysis in passenger cars

A Diagnostic System for Air Brakes in Commercial Vehicles

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

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