Video Showcase
Steer by Wire System: Precision Control for Modern Vehicles
Core Technology: Position-Controlled Force Feedback
Bidirectional Control Principle
Dual-Module Architecture:
Steering Wheel Module: Captures driver input (steering angle, torque) via high-precision sensors and generates road feedback (e.g., tire grip, lane resistance) through a 6-phase electric motor-independently developed for 95% energy efficiency.
Turning Execution Module: Receives angle signals, calculates wheel orientation based on vehicle speed (via CAN bus data), and adjusts electric actuators with 0.1° accuracy.
Position-Force Balance: Ensures seamless coordination between driver intent and vehicle response, reducing steering effort by 30% in urban conditions.
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 |
Key Modules for Adaptive Performance
Steering Wheel Force Feedback Unit
Road Sensing Simulator: Mimics real-world feedback (e.g., gravel, rain) to maintain driver feel, critical for trust in autonomous features.
Redundant Sensors: Dual-angle and torque sensors (ISO 26262 ASIL-B compliant) ensure 99.99% fault detection, minimizing steering anomalies.
Turning Execution Module
Passenger Car Version (SBW-PC):
Uses C-EPS (Column Electric Power Steering) for compact vehicles, paired with redundant R-EPS for fail-safe operation (e.g., temporary manual override in sensor fault).
Commercial Vehicle Version (SBW-CV):
Employs X-EPS (Axle Electric Power Steering) for heavy-duty trucks, supporting 5T+ loads with X-EPS's high-torque design (2000N·m peak).
Applications: Tailored for Diverse Vehicles
Passenger Cars & SUVs
Autonomous Ready: Enables lane-keeping assist and adaptive cruise control with millisecond-level response, critical for L2+ ADAS integration.
Space Optimization: Removes steering column linkages, freeing 20% more cabin space for EV battery placement or passenger comfort.
Commercial Vehicles
Heavy-Duty Reliability: Redundant ECU and power supply in SBW-CV ensure continuous operation even with single-component failure-essential for trucks on long-haul routes.
Maneuverability: Reduces turning radius by 15% in buses/lorries via adaptive wheel angle control, improving urban navigation.
Manufacturing Excellence & Compliance
In-House Development
6-Phase Motor Innovation: Our proprietary motor design reduces noise by 20% (≤65dB) and increases torque density by 15% vs. standard 3-phase motors.
Precision Assembly: 100% functional testing includes 10,000-cycle fatigue tests and thermal cycling to ensure component consistency.
Engineering Advantages: Redundancy & Durability
Triple Redundancy Design
Hardware: Dual ECUs, sensors, and power paths (12V/24V compatible) for fault tolerance (MTBF > 100,000 hours).
Robust Environmental Performance
IP67 Protection: Dust-tight and water-resistant (1m submersion), reliable in harsh weather (e.g., -40°C arctic cold, +85°C desert heat).
Redefine Steering with Wire-Based Precision
Our steer by wire system empowers vehicles with adaptive control, redundancy, and space efficiency-engineered for the demands of modern mobility. Whether enhancing passenger car autonomy or improving commercial vehicle maneuverability, it delivers the reliability and precision OEMs trust.
Contact us today to explore how our SBW solutions can elevate your vehicle's steering performance-built for safety, designed for the future of driving.
