scholarly journals Functional safety and reliability for innovative vehicle braking system and integration with electric traction units

2021 ◽  
Vol 1038 (1) ◽  
pp. 012020
Author(s):  
T. Favilli ◽  
M. Delogu ◽  
L. Pugi ◽  
L. Berzi
Keyword(s):  
Functional Safety ◽  
Braking System ◽  
Safety And Reliability ◽  
Electric Traction

scholarly journals Functional safety requirements of traction inverter in accordance to ISO 26262

2020 ◽  
Vol 184 ◽  
pp. 01062
Author(s):  
R Bhavana ◽  
Omsekhar Indela ◽  
Mohammed Sajid Yaragatti
Keyword(s):  
Short Circuit ◽  
Functional Safety ◽  
Iso 26262 ◽  
Safety Requirements ◽  
Automotive Systems ◽  
Safety And Reliability ◽  
Electric Traction ◽  
Electronic Controller ◽  
Short Circuit Fault ◽  
Electronic Sensors

With the improvement and development in the automotive, the safety related aspects are also becoming more important. Hence there is a stringent demand for the Functional Safety and reliability. In these years, most of the vehicles are made with electrical and electronic components and systems which include lots of Electronic Controller Units (ECUs), electronic sensors, bus systems with coding. Due to the complexity in application of these electrical, electronics and programmable electronics, it is necessary to analyze the potential risk of malfunction for automotive systems. Thus, ISO 26262 has been introduced for automotive electrical/electronic (E/E) systems which ensure the complete safety installation of all ECUs, E/E systems its technical as well as management issues. In this paper, functional safety in accordance with ISO 26262 Part 3 of an electric traction inverter is done, the Functional safety report is generated in MEDINI TOOL and the short circuit fault of traction inverter is considered for Functional safety using MATLAB/SIMULINK.

scholarly journals Plugging Braking of Two-PMSM Drive in Subway Applications with Fault -Tolerant Operation

2016 ◽  
Vol 12 (1) ◽  
pp. 1-11
Author(s):  
Adel Obed ◽  
Ali Abdulabbas ◽  
Ahmed Chasib
Keyword(s):  
Pulse Width Modulation ◽  
Control Method ◽  
Fault Tolerant ◽  
Permanent Magnet Synchronous Motor ◽  
Voltage Source ◽  
Braking System ◽  
Simulink Model ◽  
Braking Torque ◽  
Subway Train ◽  
Electric Traction

The Permanent Magnet Synchronous Motor (PMSM) is commonly used as traction motors in the electric traction applications such as in subway train. The subway train is better transport vehicle due to its advantages of security, economic, health and friendly with nature. Braking is defined as removal of the kinetic energy stored in moving parts of machine. The plugging braking is the best braking offered and has the shortest time to stop. The subway train is a heavy machine and has a very high moment of inertia requiring a high braking torque to stop. The plugging braking is an effective method to provide a fast stop to the train. In this paper plugging braking system of the PMSM used in the subway train in normal and fault-tolerant operation is made. The model of the PMSM, three-phase Voltage Source Inverter (VSI) controlled using Space Vector Pulse Width Modulation technique (SVPWM), Field Oriented Control method (FOC) for independent control of two identical PMSMs and fault-tolerant operation is presented. Simulink model of the plugging braking system of PMSM in normal and fault tolerant operation is proposed using Matlab/Simulink software. Simulation results for different cases are given.

EQUITAS: A tool-chain for functional safety and reliability improvement in automotive systems

2016 ◽  
Vol 47 ◽  
pp. 252-261 ◽  
Author(s):  
Réda Nouacer ◽  
Manel Djemal ◽  
Smail Niar ◽  
Gilles Mouchard ◽  
Nicolas Rapin ◽  
...  
Keyword(s):  
Functional Safety ◽  
Tool Chain ◽  
Automotive Systems ◽  
Reliability Improvement ◽  
Safety And Reliability

Functional Safety Oriented Design of an Electro-Hydraulic Stationary Braking System

2016 ◽  
Author(s):  
Massimiliano Ruggeri ◽  
Pietro Marani ◽  
Michele Selvatici
Keyword(s):  
Functional Safety ◽  
Braking System

TESTING BRAKE FLUID WEAR PROCESSES IN COMPLEX CONSTRAINED CONDITIONS

Tribologia ◽  
2017 ◽  
Vol 273 (3) ◽  
pp. 21-27
Author(s):  
Henryk BĄKOWSKI ◽  
Zbigniew STANIK ◽  
Andrzej KUBIK
Keyword(s):  
Boiling Point ◽  
Operating Conditions ◽  
Brake Fluid ◽  
Braking System ◽  
Brake Discs ◽  
Safety And Reliability ◽  
Braking Distance ◽  
Set Up ◽  
Constrained Conditions ◽  
The Impact

The study determined the effect of increased water content in a brake fluid by measuring its hydration and boiling temperature and examining the impact of brake fluid wear on the safety and reliability of a braking system. Within the scope of work, the temperature of the brake discs was determined according to the braking distance. An experimental bench was set up to determine the boiling point of the hydrated brake fluid. The position is designed to reflect the operating conditions of intense braking and lead to the boiling of the brake fluid. A summary of all laboratory and operating tests of the brake fluid tested allowed the minimum braking distance to be determined after which the brake fluid of varying degrees of hydration (over various operating periods) could boil beyond the permitted boiling point.

The Application of Fuzzy Comprehensive Evaluation Method to the Assessment of Ascension Brake System Reliability

2012 ◽  
Vol 490-495 ◽  
pp. 698-705
Author(s):  
Hong Bing Qiao ◽  
Ao Shuang Pang ◽  
Hai Long Xu
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Engineering Calculation ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Comprehensive Evaluation Method ◽  
Braking System ◽  
Mining Machinery ◽  
New Thinking ◽  
Safety And Reliability

This paper first introduces fuzzy comprehensive evaluation method to mine machinery. We evaluate the mine elevator braking system's reliability comprehensively from the perspective of the system. Application of the engineering calculation method can prove the reliability of the whole braking system systemically and completely. The precise data of real-time reliability could supply scientific and reliable information directly to hoist staff. The introduction of the method makes up the blank of analysis for elevator braking system safety and reliability, and provides a new thinking for performance evaluation of mining machinery.

RATING METRO WITH DIFFERENT ELECTRIC TRACTION SYSTEMS BY ENERGY AND TECHNOLOGY INDICATORS

2015 ◽  
Vol 2 (2) ◽  
pp. 386-391
Author(s):  
Ле Суан ◽  
Hong Le Xuan ◽  
Тулупов ◽  
V. Tulupov
Keyword(s):  
Safety System ◽  
System Safety ◽  
Braking System ◽  
Electric Traction ◽  
Technology Indicators

The most important characteristics of subway cars are Electrotraction characteristics. They define the parameters of destination, indicators of how fast the car accelerates and moves along the line, how much energy is spent on traffic and how effective its braking system, safety system. The article presents the rating to select the most effective and efficient Metro with the help of their Electrotraction characteristics

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