X-by-Wire technology is getting more and more popular. Advanced Driver Assistance Systems (ADAS) and unmanned applications are rapidly emerging, making Nissan, Audi and other automotive suppliers Bosch all vying to adopt line-by-wire control technology to replace the traditional Mechanical and hydraulic design to improve the stability and reliability of automotive electronic control systems, and to lay an important foundation for automatic driving in the future.
Chen Zhengfu, senior manager of Huachuang Automotive's forward-looking engineering department, said that X-by-Wire technology can make smart cars more humanized and customized. The future is bound to become the trend of automotive electronic control system design, and more car manufacturers will introduce them. In particular, the application of integrated line transmission control systems will become mainstream.
Chen Zhengfu, senior manager of Huachuang Automotive's forward-looking engineering department, believes that X-by-Wire will be an important foundation for the formation of ADAS and the concept of driverless driving.
Chen Zhengfu further pointed out that one of the advantages of the line transmission control system is that it can integrate multiple systems to add value to the application. Taking the automatic driving function as an example, when stopping to prepare for reversing, Brake-by-Wire is used; when shifting, Shift-by-wire is used; starting to reverse into the parking position It is applied to Steer-by-wire; when adjusting the reverse speed, it must be matched with the remote control by (Drive-by-Wire) and avoid the obstacles or adjust the car before and after. The distance is applied to all line transmission control systems.
However, Chen Zhengfu admits that the reliability and safety of the line transmission control system is still the biggest technical challenge at present; in the past, some car manufacturers introduced related technologies and found that the engine low temperature may cause software failure or backup system efficiency after software failure. Poor, although the system can be replaced by mechanical failure, but the system conversion time is too long will lead to directional control is not easy, these difficulties have caused some of the car manufacturers to restore the traditional brake system or recall some vehicles.
It is understood that the safety CriTIcal Failure of the line transmission control system must be maintained at a level below 0.000000001 (10-9/hr) per hour, and even if a single failure mode occurs, the entire system is also It must operate as usual, even if the above objectives cannot be achieved, there must be a backup system emergency, so that some of the failed systems can be operated with local functions to minimize the impact of the driving process.
Although there are certain technical risks in the line transmission control system, such as the need to consider the comprehensive failure mode, the high cost of the backup system, and the high demand for power technology, the reliability of the X-by-Wire technology is increasing, and the OEMs such as Audi and Nissan are Even The New F1 racing car has been rushing to introduce the line transmission control system in recent days; Chen Zhengfu pointed out that the reliable and stable line transmission control system will be an important foundation for the formation of the unmanned concept in the future, which is also the final development of the line transmission control technology. aims.
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