TU-TESL

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With the release of commercial license plates from all over the country, the players in the track also set foot in the deep water area where the autopilot lands. It can be found that in the "eyes" of the perception layer and the "brain" of the decision-making layer, the black technologies of various enterprises are in full bloom, but there is relatively little industry talk about the "legs" of the executive layer. The implementation level of related technology R & D threshold is high, so many enterprises are deterred. On November 21, Schaeffler, a component supplier, and Hunan Xiangjiang New Area Management Committee formally signed an investment cooperation agreement in Changsha, bringing its space drive line control technology to China and putting it into the market in 2021. Steering by wire is the key technology in the executive level of automatic driving. 30 seconds quick understanding of the full text: ★ in the future of self driving vehicles, the steering lever, brake and accelerator pedal will not be retained, and the technology of steer by wire will become the development trend. ★ about 70% of L3 and above self driving sample vehicles in the world use Schaeffler's steer by wire technology, and the research and development center of self driving established by Schaeffler in China will accelerate the landing of this technology. ★ at present, it is estimated that the single car value of the steer by wire system will be 4000 yuan in 2020. In 2025, with the increase of market demand, the single car value is expected to drop to 3000 yuan. Why is steer by wire technology necessary for future autonomous driving? We know that in the development of the automobile for more than 100 years, the steering system has gone through four stages: from the initial mechanical steering system to the hydraulic power steering system, and then there are electric hydraulic power steering system and electric power steering system. With the maturity of autopilot technology, the automatic driving vehicle for L3 or above will be partially or completely separated from the driver. Therefore, the intelligent driving control system requires more precise control and higher reliability for steering systems. The original steering system can not meet these requirements. Therefore, the steer by wire technology will become the future development trend. "Schaeffler steer by wire technology exhibition" can imagine that in the future, the steering lever, brake, accelerator pedal and other components will not be retained. The vehicle intelligent sensing unit transmits the command to the steering or braking system through the harness to realize the control of the vehicle, that is, the driver input interface (steering wheel) and the actuator (steering wheel) are connected by wire control, and there is no direct hydraulic or mechanical connection between them. The direct benefit of this technology is to omit the space occupied by a part of the steering mechanical structure in the front cabin of the vehicle, so as to obtain more space in the interior design; without mechanical steering column, the collision safety of the vehicle is also improved; the steering wheel angle and steering torque can be designed independently to meet the requirements of different types of drivers for "hand feeling". Why is the core technology of automatic driving less enterprise layout? Dirk kesselgruber, President of Schaeffler chassis division, stressed that safety and reliability are the basic requirements of this technology. It is reported that Schaeffler's space drive wire control technology adopts triple redundancy to ensure the high availability and safety of the control system. The system has passed the strict ISO 26262-asil D functional safety certification and public road certification, helping to achieve L4-L5 level automatic driving. "Line control technology with triple redundancy design" from the perspective of the whole market, the line control steering is still in the early stage of development. At present, the penetration rate is very low, and the models equipped with the line control steering system are very rare. The most familiar ones are Q50 (parameter | inquiry), q50l part of high configuration models and Q60 equipped with the line control steering technology. Although Schaeffler's line control steering technology has not yet been installed on the mass production vehicles, Schaeffler said that about 70% of the world's L3 and above self driving sample vehicles have used its line control technology, which belongs to the small-scale production status. It is revealed that Schaeffler wire control technology will be put into the market in real batch in 2021. "Infiniti Q50" not only applies the line control technology to passenger cars, but also focuses on the specific scene areas, such as logistics vehicles, environmental protection vehicles and agricultural vehicles, which are carried on the Schaeffler mover concept vehicle. It is believed that these self driving commercial vehicles will be used in the market earlier. " Said Zhang Yilin, chief executive of Schaeffler Greater China. In fact, Schaeffler's steer by wire technology originated from its acquisition of Palawan company, which was designed for disabled vehicles in the early stage and then evolved into automatic driving technology. More importantly, space drive technology has been used in the market for 17 years, and has a 1 billion km public road accident free driving record. It is a mature technology that can be put into the market immediately. Of course, the government's support is indispensable for autonomous driving to really land. Schaeffler and Hunan Xiangjiang New Area Management Committee formally signed an investment cooperation agreement in Changsha, and the two sides jointly built an intelligent driving automobile industry ecosystem in the region. According to the agreement, Schaeffler will establish a wholly-owned company in Xiangjiang new area, Hunan Province, and the second R & D center of Schaeffler in Greater China and China intelligent driving Research Institute, and introduce the mechatronics products and technologies related to chassis systems, such as space drive line control technology, mover platform system, 90 degree intelligent energy line control steering module, which are applied to intelligent driving, into the new area. Schaeffler's series of measures means that the core technology and products of intelligent driving will be transferred from the promotion stage to the implementation stage in the Chinese market. Zhang Yilin said: "the biggest challenge for the market application of Schaeffler's core technology of automatic driving lies in the pressure of cost, while the acceptance of Chinese consumers for automatic driving is the highest in the world. Combined with the huge advantages of the Chinese market, Schaeffler can be applied in a faster scale to reduce costs, so we give priority to the implementation of wire control technology in the Chinese market." According to the relevant research, according to the domestic passenger vehicle sales volume of 23 million and 27 million in 2020 and 2025, and the penetration rate of the line control steering system of 0.1% and 15%, the market space of the line control steering system in 2020 and 2025 is 100 million yuan and 12.2 billion yuan respectively. It is predicted that the annual compound growth rate of the market space of the steer by wire system will reach 166% in 2020-2025. At present, it is estimated that the single car value of the steer by wire system will be 4000 yuan in 2020. In 2025, with the increase of market demand, the single car value is expected to drop to 3000 yuan. In view of the above data, it is not difficult to understand why Schaeffler still has to spend a lot of money on automatic driving by wire technology in the downward market environment. The technology of overtaking in corners is not existent. The landing of an autopilot should not be radical but gradual. It is the best interpretation of the commercialization of autopilot to quote Chairman Mao's classic phrase, "the future is bright and the road is tortuous". Schaeffler's Greater China division president Yang Hanbing concluded. At present, L3 and above level self driving cars are still in a conceptual stage. However, this has not hindered the pace of joint efforts of the industry to achieve large-scale production. In fact, Schaeffler landed in Changsha to produce the wire control technology that can be used in the field of automatic driving, and is also an important part in the development process of the automatic driving vehicle. Only when the industrial chain is working together, can we achieve the goal of mass production of automatic driving cars.