Video Showcase
Steer by Wire Steering System: Precision Control with Real-Time Road Feedback
Core Control Principle: Position-Driven Precision
Adaptive Steering Logic
Position Difference Control: The system monitors the variance between driver-input steering wheel angle and actual front-wheel angle, adjusting the steering execution motor in real time to ensure 0.5° tracking accuracy.
Torque-Based Feedback: By measuring the steering motor's current (200mA resolution), the controller calculates road load forces (e.g., tire friction, cornering resistance) and gear-tooth pressures, translating them into intuitive steering wheel feedback.
L4 SBW System Design Features
|
Level |
Features |
Functional safety requirements |
Quality system standards |
Vehicle electrical architecture |
Software Architecture |
|
L4 |
Wire-controlled steering + road feel simulation |
ASIL-D |
16949+ASPICE-4+ISO26262 |
Centralized domain controller |
Autosar |
|
Steering control hardware architecture requirements |
|||||
|
Motor |
Main control chip |
Sensor redundancy |
Power Drive |
power supply |
communication |
|
6-phase brushless |
(Function + lock-step core)*2 |
Steering wheel angle*2, motor angle*2 |
Drive circuit redundancy |
Dual power supply |
CAN-FD+CAN |
|
Road Sense Simulation Architecture Requirements |
|||||
|
6-phase brushless |
(Function + lock-step core)*2 |
Torque*4, steering wheel angle*2, motor angle*2 |
Dual drive circuit |
Dual power supply |
CAN-FD+CAN |
Road Feel Feedback Technology
Dynamic Model Reconstruction
Real-Time Force Estimation: Using a dynamic vehicle model, the system synthesizes road conditions (e.g., gravel, rain) with driver input (torque, angle) to reconstruct resistance forces through gear-tooth force algorithms.
Adaptive Feedback Torque: Combining electric power assist strategies, it computes expected feedback torque (0.1–5N·m range) to simulate real-world steering feel, critical for driver trust in autonomous modes.
Application Scenarios: Versatility Across Vehicles
Passenger Cars & Luxury Vehicles
Enhanced Handling: Delivers 30% more precise steering in urban traffic (e.g., tight parking) and 20% better high-speed stability (≥100km/h) for passenger cars.
Customizable Feedback: Luxury models can offer driver-selectable modes (comfort/sport) that adjust feedback stiffness, aligning with brand-specific driving dynamics.
Electric & Autonomous Vehicles
EV Efficiency: Consumes 45% less power than hydraulic systems, preserving EV battery range.
Autonomous Readiness: Millisecond-level response (≤50ms) supports L2+ ADAS features like lane centering and emergency steering, with redundant sensors for fail-safe operation.
Engineering Excellence: Reliability You Can Trust
Rigorous Testing Regime
Environmental Validation: Operates -40°C to +85°C (ISO 16750-4), with 10,000-hour continuous operation testing (equivalent to 150,000km driving).
Experience Steering Redefined
Our steer by wire steering system combines precision control with intuitive road feedback-engineered to elevate driving safety and experience in passenger cars, luxury vehicles, and next-gen EVs. Backed by rigorous testing and adaptive technology, it's the smart choice for modern mobility.
Contact us today to explore how our system can enhance your vehicle's steering performance-built for precision, designed for the future of driving.
