Torque/Angle Sensors
Torque/Angle Sensor
Accurate Steering Input Detection for Smarter, Safer Driving
Precision Measurement in Motion
Delivering accurate detection of steering wheel torque and position for next-gen Electronic Power Steering (EPS) systems.
Enhanced Driving Control with PML Torque Sensors
Modern EPAS (Electric Power Assisted Steering) systems rely on torque and angle sensors to accurately measure the driver’s input. These sensors capture the steering wheel's position and the torque applied, sending signals to the Transmission ECU to adjust assistance accordingly. The result: reduced steering effort and enhanced driving control.
EPAS Sensor Assembly at Work
How it Works: High-Precision Magnetic Sensing in Motion
1
Rotor
Mounted on the rotary shaft of the steering column, this rotor consists of a series of permanent magnets positioned on a ferromagnetic yoke. It generates the magnetic field required for sensing.
2
Stator
A soft magnetic core placed on a corresponding shaft of the steering column. Made using high-performance 48% Ni-Fe alloys for magnetic efficiency.
3
Flux Collector
Constructed using 80% Ni-Fe alloy, this component channels magnetic flux to the Hall sensor—ensuring sharp responsiveness and accurate signal conversion.
4
Hall Effect Sensor (Integrated)
Detects variations in magnetic field strength to precisely calculate torque and angular position.
5
Signal Processing
The system feeds this data to the ECU, which drives the power steering motor with optimal torque assistance.
Why EPAS Is Superior to Hydraulic Systems
Feature | EPAS | Hydraulic Steering |
|---|---|---|
Fuel Efficiency | No fuel required | Continuous fuel draw |
Weight | Lightweight | Heavier system |
Fail-Safety | Electronics-based | Mechanical dependencies |
Measurement Accuracy | Integrated magnetic sensing | Limited analog feedback |
Control Precision | ECU-controlled | Less responsive |
Key Benefits
1
Enhanced Fuel Economy
No hydraulic pump required—lower energy consumption.
2
Precision Sensing
Magnetic sensing assemblies provide accurate torque and angle data.
3
Lightweight and Compact
Ideal for modern vehicle platforms prioritizing efficiency.
4
Fail-Safe Operation
Electronically driven systems offer improved reliability.
5
Eco-Friendly
No fluids, fewer emissions, and lower power consumption.
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