Electronic-Hydraulic Forced Steering System

Intelligent multi-axle steering with no mechanical link – improving manoeuvrability, stability, and control.

DTS® – Dynamic Trailer Steering

The DTS® Electronic-Hydraulic Forced Steering System is an advanced steering solution for multi-axle trailers, combining electronic control with hydraulic actuation.

It enables controlled axle steering without a mechanical linkage between the tractor and trailer, offering flexible steering behaviour across a range of applications.

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Electronic-Hydraulic Forced Steering system

Key Features

Drawbar angle sensor free steering
Steerable when driving in reverse
Wide range of steering programs:
- Manual steering
- Crab steering
ISOBUS connection option
Available in:
- Single axle
- Tandem axle
- Tri axle
- Quad axle configurations
Axles supplied with:
- Speed sensors
- Angle sensors
Automatic reduction of maximum steering angle at higher speeds

System Overview

The system integrates multiple components to manage steering behaviour:

Steering angle sensing
Wheel speed measurement
Electronic control unit
Hydraulic actuation via proportional valve system

Various steering programs available, all axle steering, crab steering, manual steering.

Stable driving with speed dependent steering angle.

No mechanical connection needed between towing vehicle and trailer.

How it Works

The system continuously monitors vehicle dynamics and steering inputs:

The IMU captures motion across six kinematic degrees of freedom.
Speed sensors measure wheel rotation.
The steering angle sensor detects axle position.
The steering control unit processes all inputs in real time.
The proportional hydraulic unit directs fluid to the steering rams.

This closed-loop system ensures smooth, accurate steering under all conditions.

Example set up of a Tandem Axle, 150mm square steer axle beam on air suspension with parking brake chambers. Both axles are steering.

Steer axle hydraulic ram controlled by the proportional valve unit

The steering angle sensor located on top of the kingpin

Speed sensor with hub mounted pole wheel

Benefits

The DTS® system delivers real-world advantages across performance, safety, and operational efficiency.

1. Improved Manoeuvrability

Precise axle steering allows trailers to navigate tight spaces more easily, reducing turning radius and improving handling in confined environments.

2. Enhanced Stability at Speed

Automatic reduction of steering angle at higher speeds improves stability and control during transport.

3. Reduced Tyre Wear

Controlled steering behaviour helps minimise tyre scrub, extending tyre life and reducing operating costs.

4. Flexible Steering Modes

Multiple steering programs, including manual and crab steering, allow operators to adapt to different working conditions.

5. No Mechanical Link Required

Electronic-hydraulic operation removes the need for a mechanical connection between tractor and trailer, simplifying installation and increasing flexibility.