Linearized Force and Torque Technology

N28
Hi resolution torque plot of NEMA28 stepper motor shows torque ripple

Iris Dynamics has invented a breakthrough technology which employs a 3-dimensional model of electromagnetic interactions to smooth the force profile of linear motors or the torque profile of rotary motors.

The Linearized Force and Torque (LiFT™) technology uses patented electromagnetic design and software algorithms for motion control, eliminating load cells and torque sensors and replacing expensive mechanical gears, pulleys, pneumatics, and hydraulics.  With few moving parts, systems are simplified and reliability is improved.

Used in simulation systems where control loading and haptic feedback is essential for realistic training, LiFT technology creates a high-fidelity operating experience that is applicable to broad classes of motion control—where human operators require precision control of machines or critical processes are being controlled.

A unique characteristic of the LiFT technology is the capability to provide precision force or torque when being back-driven or at stall.  For example, a motor that provides a specific torque may be externally rotated in either direction while still providing a smooth controllable torque.

Our devices are ideally suited for motion control systems in flight simulators, aircraft control systems, submersibles, motor vehicles, and heavy equipment.  Used by NASA, the FAA, Airbus Perlan, Lockheed-Martin, and numerous simulation equipment integrators, our technology has established a new standard of high performance and cost effectiveness.

“The Iris Dynamics solution is a mechanically simple design with a single moving part which translates to reduced costs, higher reliability, and operation in challenging environments.”