Passenger Car Intelligent Steering Industry Research Report, 2024
Intelligent Steering Research: Steer-by-wire is expected to land on independent brand models in 2025
The Passenger Car Intelligent Steering Industry Research Report, 2024 released by ResearchInChina summarizes and studies the status quo, installation, suppliers’ layout, supply chain layout, etc. of intelligent steering in the world and China, and predicts the future development trends of intelligent steering.
1. Policies provide continuous support, and standards concerning steer-by-wire are becoming definite.
Since 2023, China has formulated a range of national standards, association standards and other policies for steer-by-wire. From system standards such as technical requirements and test methods for steer-by-wire of commercial vehicles and passenger cars, to component standards for wheel hub/wheel rim motors and steer-by-wire road sense simulators, the standards for steer-by-wire are becoming increasingly definite and perfect.
Take the steer-by-wire road sense simulator as an example: when the driver drives a vehicle, the hand feel is very important to the driver. The road sense transmits the force and road conditions of the tires, road surface, and body to the driver through the steering wheel in real time. Without mechanical connection, the road sense can only be produced by the steer-by-wire road sense simulator. The most important function of a road sense simulator is to simulate and restore the driver's feelings as realistically as possible under different road conditions.
In August 2024, the Institute of Electrical Engineering (IEE) of Chinese Academy of Sciences (CAS) and HYCET EPS System (Jiangsu) jointly took the lead in drafting the CSAE standard "Fault Injection Test Specifications for Steering Wheel Hand Feel Simulation Controllers of Passenger Car Steer-by-Wire Systems", a standard which filled the gap in this field.
The following table shows the statistics of steer-by-wire standards and policies from 2023 to 2024:
2. Many OEMs are vying to deploy steer-by-wire technology which is expected to be available in domestic independent brand models in 2025.
There are fewer than 10 passenger car models equipped with steer-by-wire in the world, including Infiniti Q50, Q50L, QX50, Q60, Toyota bZ4X, Lexus RZ, and Tesla Cybertruck. The following table lists the models that have carried and are scheduled to carry steer-by-wire:
Seen from the plans of OEMs, steer-by-wire is expected to be available in domestic independent brand models in 2025.
3. Four-wheel independent steering will be the future development direction of steer-by-wire
The 4-wheel steering with steer-by-wire system (4WS-SBW) is composed of an independent mechanical transmission mechanism and a steering actuator motor. Each wheel can independently control the steering angle, enabling the vehicle to turn in place while increasing the freedom of driving attitude. The greatest significance of 4-wheel independent drive lies in safety. It can improve the stability and anti-skid control of the vehicle. It also provides power and steering dual redundancy for the autonomous driving system. Even if the steering wheel fails, steering can be achieved through the speed difference between the four wheels.
For example, the Hongqi integrated chassis structure comes from the "Hongqi drive-steering integrated power chassis" technology of the intelligent driving safety chassis system of the e.RFlag electric platform (HME). This chassis technology platform pioneered a chassis domain control algorithm to achieve integrated control of steering, braking and suspension systems. It removes the motors that drives the wheel from the body, integrates them directly into the wheel, and installs them on the inside of the wheel hub instead. All four wheels adopt the same design. This is equivalent to directly canceling the transmission devices on traditional vehicles, allowing the wheels to drive "themselves", and realizing seven motion modes including crab walk steering, fixed-point U-turn, front-wheel steering, and four-wheel steering.
BYD, Hongqi, Dongfeng and Schaeffler among others have laid out 4-wheel independent steering, a technology which is a major future development direction of steer-by-wire.
4. Steer-by-wire technology will disrupt cockpit design
Change 1: Steer-by-wire can enable foldable steering wheels to increase the available space in the cockpit. Nexteer's steer-by-wire can realize a foldable steering wheel, which automatically retracts during autonomous driving to increase the available space in the cockpit. ZF's steer-by-wire will allow the steering wheel to automatically retract in the future.
Change 2: Steer-by-wire technology can eliminate the steering wheel and replace it with other devices:
In November 2023, Schaeffler announced its force feedback operating joystick technology, which cancels the traditional steering wheel and replaces it with a joystick placed next to the armrest. Schaeffler's force feedback operating joystick has no mechanical connection with the front steering mechanism. This joystick can clearly feed the road sense back to the driver. The full steering stroke is about 100 degrees from the left to the right. The entire system development meets the relevant functional safety requirements and standards.
In May 2024, Hitachi Astemo's Smart SBWS used multiple control solutions to replace the traditional steering wheel, for example, using a mouse to control the steering wheel in the central armrest box, or using a new device on the left side of the front passenger to control the steering wheel. The system is expected to be mass-produced in 203X.
Passenger Car Intelligent Steering Industry Research Report, 2024
Intelligent Steering Research: Steer-by-wire is expected to land on independent brand models in 2025
The Passenger Car Intelligent Steering Industry Research Report, 2024 released by ResearchInChina ...
China Passenger Car Mobile Phone Wireless Charging Research Report, 2024
China Passenger Car Mobile Phone Wireless Charging Research Report, 2024 highlights the following:Passenger car wireless charging (principle, standards, and Qi2.0 protocol);Passenger car mobile phone ...
Automotive Smart Exteriors Research Report, 2024
Research on automotive smart exteriors: in the trend towards electrification and intelligence, which exteriors will be replaced by intelligence?
The Automotive Smart Exteriors Research Report, 2024 ...
Automotive Fragrance and Air Conditioning System Research Report, 2024
Research on automotive fragrance/air purification: With surging installations, automotive olfactory interaction is being linked with more scenarios.
As users require higher quality of personalized, i...
Intelligent Vehicle Multi-Domain Computing Industry Report, 2024
Multi-Domain Computing Research: A Summary of Several Ideas and Product Strategies for Cross-Domain Integration
1. Several ideas and strategies for cross-domain integration of OEMs
With the increasi...
Analysis on Xiaomi Auto's Electrification, Connectivity, Intelligence and Sharing, 2024
Research on Xiaomi Auto: Xiaomi Auto's strengths and weaknesses
Since the release of SU7, Xiaomi delivered 7,058 units and 8,630 units in April and May, respectively, and more than 10,000 units in bo...
ADAS and Autonomous Driving Tier 1 Suppliers Research Report, 2024 - Foreign Companies
Research on foreign ADAS Tier 1 suppliers: make all-round attempts to transform and localize supply chain and teams.
1. Foreign ADAS Tier 1 suppliers fall behind relatively in deve...
Research Report on Passenger Car Cockpit Entertainment--In-vehicle Game, 2024
1. In-vehicle entertainment screens are gaining momentum, and Chinese brands rule the roost.
In-vehicle entertainment screens refers to display screens used for entertainment activities such as viewi...
Body (Zone) Domain Controller and Chip Industry Research Report,2024
Research on body (zone) domain controller: an edge tool to reduce vehicle costs, and enable hardware integration + software SOA.
Integration is the most important means to lower vehicle costs. Funct...
China Charging/Swapping (Liquid Cooling Overcharging System, Small Power, Swapping, V2G, etc) Research Report, 2024
Research on charging and swapping: OEMs quicken their pace of entering liquid cooling overcharging, V2G, and virtual power plants.
China leads the world in technological innovation breakthroughs in ...
Autonomous Driving SoC Research Report, 2024
Autonomous driving SoC research: for passenger cars in the price range of RMB100,000-200,000, a range of 50-100T high-compute SoCs will be mass-produced. According to ResearchInChina’s sta...
Automotive Cockpit Domain Controller Research Report, 2024
Research on cockpit domain controller: Facing x86 AI PC, multi-domain computing, and domestic substitution, how can cockpit domain control differentiate and compete?
X86 architecture VS ARM ar...
Chinese OEMs (Passenger Car) Going Overseas Report, 2024--Germany
Keywords of Chinese OEMs going to Germany: electric vehicles, cost performance, intelligence, ecological construction, localization
The European Union's temporary tariffs on electric vehicles in Chi...
Analysis on DJI Automotive’s Autonomous Driving Business, 2024
Research on DJI Automotive: lead the NOA market by virtue of unique technology route.
In 2016, DJI Automotive’s internal technicians installed a set of stereo sensors + vision fusion positioning syst...
BYD’s Layout in Electrification, Connectivity, Intelligence and Sharing and Strategy Analysis Report, 2023-2024
Insight: BYD deploys vehicle-mounted drones, and the autonomous driving charging robot market is expected to boom.
BYD and Dongfeng M-Hero make cross-border layout of drones.
In recent years,...
Great Wall Motor’s Layout in Electrification, Connectivity, Intelligence and Sharing and Strategy Analysis Report, 2023-2024
Great Wall Motor (GWM) benchmarks IT giants and accelerates “Process and Digital Transformation”.
In 2022, Great Wall Motor (GWM) hoped to use Haval H6's huge user base to achieve new energy transfo...
Cockpit AI Agent Research Report, 2024
Cockpit AI Agent: Autonomous scenario creation becomes the first step to personalize cockpits
In AI Foundation Models’ Impacts on Vehicle Intelligent Design and Development Research Report, 2024, Res...
Leading Chinese Intelligent Cockpit Tier 1 Supplier Research Report, 2024
Cockpit Tier1 Research: Comprehensively build a cockpit product matrix centered on users' hearing, speaking, seeing, writing and feeling.
ResearchInChina released Leading Chinese Intelligent Cockpit ...