The Tactile Feedback Device (TFD®) steering unit is a key component of fully electric and electro-hydraulic Steer-by-Wire (SbW) systems. These devices provide an integrated solution that combines bearing support, steering position sensing, communication and continuously variable resistive steering torque, delivering high-fidelity tactile feedback and maximum control to the operator. The resistive steering feedback is fully programable, with custom algorithms available based on equipment operating conditions.

The LORD TFD® is a multifunction unit, providing both incredibly smooth steering feel (through the use of Magnetically Responsive (MR) technology) and reliable and redundant steering control signals (including CAN functionality). Our TFD steering unit is maintenance free and will never require inspection or adjustment during the expected service life. Also, there are very few moving parts in the TFD which greatly enhances durability. All of this adds up to a compact, robust, low power, easy-to-install, and maintenance-free design.

Where are Tactile Feedback Devices used?

We have been a pioneer in SbW steering units since 1999, when the first device began production on a forklift truck application. With more than half a million devices in the field, Parker LORD has a long history of providing reliable and safe TFD steering units to OEMs in various markets including: Marine (Helm Controls), Material Handling (Forklifts), Turf (Greens Mowers), Off-Highway (Agricultural Tractors and Construction Equipment) and Small Industrial Vehicles (Floor Sweepers, Zamboni, etc.).

Features & Benefits:

• Improved Steering Feedback Performance
• Programmable resistive steering feedback based on equipment operating conditions
• Smooth Steering Torque Independant of Vehicle Speed and Temperature
• No "Stick Slip" at Low Speeds (Common with Friction Brakes)
• No Electric Motor "Cogging" Feel
• Increased Ease of Off-Road Maneuverability
• Improved Accuracy at On-Road Speeds
• Low Power Consumption
• Fast Response Time
• Reliable Control Signals
• Multiple Non-Contact Sensor Configurations (2, 3, or 4 Outputs)
• Analog (v) and/or Digital (pwm) Outputs
• Protected from EMC
• SIL2/3 Safety Rating (SIL = Safety Integrity Level)
• Increased Design Flexibility
• Extensive Portfolio of Standard and Customized Solutions
• Robust, Easy-to-Install, Compact Design
• Improved Steering Ergonomics for the Operator
• No Maintenance Required