MAGNETIC FORCE FEEDBACK TECHNOLOGY
What is it and how does it work?
If you have played with magnets, you have experienced the basic principle - that opposite poles attract and like poles repel each other. This is the basic idea behind electromagnetic propulsion. Iris Dynamics' sophisticated set of software algorithms further manipulates the dynamics of those magnetic fields to control propulsion and motion.
Similar in concept to magnetic levitation trains, the main component of an Iris Dynamics device glides along magnetic fields, thus eliminating friction.
Iris devices are comprised of two key components: stationary electromagnetic coils and movable permanent magnets. Permanent magnets hover inside the coil and are free to move along the central bore of the electromagnetic coil. The negative pole of the permanent magnet is drawn to the positive pole of the electromagnet, and vice versa. If the polarity of the electromagnet is reversed, the permanent magnet is drawn to the new pole locations, and the permanent magnet moves in the desired direction.
Integrated software algorithms with the device create the appropriate static and dynamic forces that would be encountered in the real world. Intricate mathematical models replicate those kinetic forces a human operator would experience – such as inertia, resistance, torque, acceleration, vibration, shear, and other physical forces. These controls transmit tactile information back to reproduce the changing forces an operator would experience in the real world.
Unlike other human-machine controllers and actuators, there is just one moving part, and there is less risk of mechanical failure and systems are simplified, reliability is vastly improved, and costs are dramatically lowered.
The Iris Magnetic Suspension Joysticks work on the same principles. This innovative joystick removes the mechanics used by the traditional joystick systems. This new simplicity completely eliminates backlash in the motor and provides a truly zero-cogging experience.
Realistic & Intuitive Tactile operator experience – The ability for the user to “feel” how a machine is responding is vital for safety and precision. Accurate force modeling allows customization for operator feel including vibrations, back-drive, soft stops, spring rates, variable damping, shaking, wind-shear effects, Warble, jerking, bouncing, rattling, and a variety of other physical forces.
Better, Faster, & Cheaper –Iris devices are capable of generating forces under a millisecond of receiving a signal and with milligrams of resolution. Iris devices provides realistic operator feel, and at costs that are a small fraction of the price of other devices.
Simplicity – Every seasoned engineer adores simplicity. With basically a single moving component (rather than a complex array of gears, hydraulics, pulleys, pneumatics, or motors) and its functions being done in software, with an Iris device there is less maintenance and less risk of things going wrong.
Smooth and Frictionless - The main component of an Iris Dynamics device glides along magnetic fields. Because the magnets never come in contact with the coils, the main component moves with unprecedented smoothness and accuracy. This elegant system offers contact-less glide that is smoother than motion with gears or other mechanicals.
Silent... - Completely silently with no mechanical noise which is important in simulation and other immersive applications
Accurate & Efficient - The coils respond rapidly from the control circuit signal. Incredibly accurate, precise and low latency.
Scalable – Iris Dynamics has done extensive research to develop mathematical modeling to scale its devices to between small and large force outputs.
Configurable & Programmable – Iris Dynamics actuators are programmable to allow instant change of force feedback characteristics.
Smart, Connectible & Networked - Intelligent, networked devices can autonomously coordinate and optimize work.
Clean Tech – Magnetic force feedback technology replaces petrochemicals which is better for the environment. Also, there are no contaminates and no CO2 emissions produced.
Awesome Technology - no explanation necessary.
- Vibrations and Rumble – multiple types such as low power, rapid fire, steady, etc.
- Ramping up or Ramping down
- Soft stops, Sticking, and Slipping
- Spring rates
- Variable damping
- Shaking and bouncing
- Pulsating effects
- Wind-shear and Current effects
- Jerking and Rattling
- Viscosity Effects
- Jolts and Abrupt Stops for obstacles
- Clicking and Clunking
- Braking and Gear Shifting
- Torque Control
- An endless variety of other physical forces
Iris Dynamics Ltd. is actively seeking industry partners worldwide to advance this technology.