Learning-based fault diagnosis of air brake system using wheel speed data

Raveendran, Radhika; Devika, K. B.; Subramanian, Shankar C.

doi:10.1177/09544070211063719

Cited by 3 publications

(2 citation statements)

References 22 publications

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“…At present, the brake system fault detection [1] is still mainly based on regular maintenance, which is not conducive to finding the cause of the fault, nor can it monitor whether the working status of the brake and hydraulic system is within the normal working range [2]. Therefore, the real-time fault diagnosis [3] of hydraulic braking system is a necessary requirement for the development of vehicle intelligence.…”

Section: Introductionmentioning

confidence: 99%

Fault diagnosis and analysis of hydraulic brake based on friction vibration signal

Ma¹,

Wang²

2023

J. vibroeng.

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The friction vibration signal corresponding to different fault types of brakes is significantly different, thus a hydraulic disc brake fault diagnosis and judgment scheme based on vibration signal detection was proposed and validated in the paper. According to the composition and electric control principle of hydraulic brake, the vibration signal detection and brake pressure control strategies were established. The key hardware and isolation circuit of the detection system were designed, which can effectively improve the stability and anti-interference ability in the process of vibration data acquisition and transmission with SPI and CAN bus communication scheme. In order to eliminate noise interference in friction vibration signal and improve the accuracy of fault diagnosis with advantage, wavelet threshold denoising method was applied to brake disc vibration signal processing. The denoised signal can be obtained by inverting the selected wavelet coefficients to separate the useful components of the signal from the invalid noise. For the research on the correlation between fault types and vibration signal characteristics, a friction vibration test bench for hydraulic braking system was built to obtain and process the output signal from vibration sensor. The frequency spectrum response laws of vibration signals were compared and analyzed when the brake disc was normal and had surface defects, including microcracks, excessive wear and fatigue peeling. The external parameters such as brake pressure and spindle speed were keeping constant, thus eliminating the influence of working factors on vibration characteristics. In order to study the influence of brake pressure failure on friction vibration, the variation law of vibration signal is compared and analyzed under the condition of hydraulic valve leakage and pressure maintaining failure. The results show that the friction vibration signal can be used as an effective basis for judging the surface defects and brake pressure faults of brake discs. Under the condition of wavelet threshold denoising, accurate and effective vibration parameters can be obtained, which is of great significance to the safety and reliability of the braking system.

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Section: Introductionmentioning

confidence: 99%

Fault diagnosis and analysis of hydraulic brake based on friction vibration signal

Ma¹,

Wang²

2023

J. vibroeng.

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“…However, with the addition of load, the tendency of the vehicle to turn into understeer. For the braking system on this rural car from a speed of 20 km / h to 40 km / h the braking distance is increased by 300 percent [6].…”

Section: Introductionmentioning

confidence: 99%

Compressor Air Pressure and Brake Shield Distance Brake to Braking Accuracy on Brakes Antilock Braking System

Listiyono

Nurhadi

Khambali

2022

ajse

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The development of automotive technology to date is very fast. In the city, it is almost rare to find conventional cars. Most are already using modern technology. The hallmark of modern cars is that they are not fully mechanical. Already combined with several electric and pneumatic tools. Until now the development in the field of chassis is endless. Its initial development began with the discovery of ABS (Anti Lock Brake System) brakes. Basically, ABS is followed by supporting components such as EBD, ESP, and so on.All of this is actually inseparable from the main function of braking. Namely so that the car can run well,, deceleration and stop as desired appropriately. The parts of the brakes that are most influential are the brake shoes and discs and the compressed air from the brakes. Also the most influential accuracy is the distance of the brake shroud. Therefore, in this study the aims of 1. To find the effect of pressure and brake shroud distance. 2. What is the minimum air pressure and brake shroud for the brakes to work properly (grip). This research uses experimental design method. The data is processed with the Minitab program. Data processing shows that: 1. The braking speed is influenced by the amount of compressed air pressure. Partially the distance of the brake shroud does not affect the braking speed. But the interaction of pressure and shroud distance has an effect on braking speed. 2. Air pressure that can be used as a fast ABS braking process is 3.75 â€“ 4.25 (bar) with a shroud distance of 5 (mm).

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Investigation on the health evaluation of mechanical system in powertrain based on subjective and objective fusion method

Wu,

Yang,

Wang

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part D:

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The powertrain is a core component of military heavy tracked vehicles, and the accurate evaluation of its reliability and health is gradually becoming a key technology to improve our military combat effectiveness. However, the powertrain is a complex system integrating mechanical, electrical, and hydraulic components, which is difficult to achieve its accurate assessment and comprehensive characterization. Therefore, using data-driven and expert opinion fusion method to evaluate the mechanical system health is gradually becoming a research trend. This paper points out the composition of evaluation system, and puts forward how to calculate the index. Then using subjective and objective fusion method to analyze these indexes of mechanical system health and calculate the weights of each index. Based on the weights, the fuzzy comprehensive evaluation method is used to score and summarize the change law of mechanical system health. In conclusion, this study enriches the method of effectively evaluating the mechanical system health, and verifies the accuracy of this evaluation method. It will provide an evaluation basis for improving the mechanical system reliability.

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Learning-based fault diagnosis of air brake system using wheel speed data

Cited by 3 publications

References 22 publications

Fault diagnosis and analysis of hydraulic brake based on friction vibration signal

Fault diagnosis and analysis of hydraulic brake based on friction vibration signal

Compressor Air Pressure and Brake Shield Distance Brake to Braking Accuracy on Brakes Antilock Braking System

Investigation on the health evaluation of mechanical system in powertrain based on subjective and objective fusion method

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