HapticBy: Mohammad Sabouri

CHISTA Academy

What is Haptics?

• Haptic technology is something that help us to touch virtual objects and find out the concept it on real world.• Also Haptic, is the technology of adding the sensation of touch an feeling

to computers.• Haptic = Interaction between humans and computers or virtual world.• Haptic technology is a tactile feedback technology which takes advantage

of the sense of touch by applying forces, vibrations, or motions to the user.• A haptic device gives people a sense of touch with computer-generated

environments, so that when virtual objects are touched, they seem real and tangible.

Some Samples

Word Root

• The word haptic, derived from the Greek root haptikos, meaning “able to grasp or perceive.” and arises from the Greek verb haptesthai, meaning to contact or to touch.

• Haptics = Touch = Connection

History• One of the earliest applications of haptic technology was in large aircraft that use

servomechanism systems to operate control surfaces. Such systems tend to be "one-way", meaning external forces applied aerodynamically to the control surfaces are not perceived at the controls. Here, the missing normal forces are simulated with springs and weights.• The first US patent for a tactile telephone was granted to Thomas D. Shannon in

1973.An early tactile man-machine communication system was constructed by A. Michael Noll at Bell Telephone Laboratories, Inc. in the early 1970s and a patent issued for his invention in 1975.• In 1994, Aura Systems launched the Interactor Vest, a wearable force-feedback

device that monitors an audio signal and uses Aura's patented electromagnetic actuator technology to convert bass sound waves into vibrations that can represent such actions as a punch or kick.• In 1995 Norwegian Geir Jensen described a wrist watch haptic device with a skin

tap mechanism, termed Tap-in. It would connect to a mobile phone via Bluetooth.

Haptics Feedback

Haptics is implemented through different type of interactions with a haptic device communicating with the computer. These interactions can be categorized into the different types of touch sensations a user can receive: • Tactile Feedback Refers to the sensations felt by the skin. It allows the user to feel things such as the texture of surfaces, temperature and vibration.• Force Feedback It reproduces the directional forces that can result from solid boundaries. E.g. the weight of virtual objects, inertia, etc.

Haptics Feedback

• Tactile Feedback• Force Feedback

Haptic Areas

• Human Haptics: The study of human sensing and manipulation through touch.• Machine Haptics: the design, construction, and use of machines to replace or augment human touch.• Computer Haptics: algorithms and software associated with generating and rendering the touch and feel of virtual objects.

Applications of Haptics Technology

• Game• Arts and Design• Robot design and

control• Medical• Holographic Interaction• Entertainment• Museum Display

• Biomechanics• Neuroscience• Psychophysics• Medical• Software engineering• Mathematical modeling and Simulation • …

Haptics in Robotic

Types of Haptic Devices

• Passive• Active

• Grounded• Combined• Attached

Haptic DevicesIt allows users to touch, feel and manipulate 3-D objects in virtual environments.Some important Haptic devices: 1. Phantom Provides a 3D touch to the virtual objects.2. Cyber Grasp The Cyber Grasp system is an innovative force feedback system for your fingers and hand. It lets you "reach into your computer" and grasp computer-generated or tele- manipulated objects.3. Magnetic Levitation Haptic Interfaces A technology for feeling sensation over total body.

Advantages of Haptics Technology

• Working time is reduced. • Communication is centered through touch and the digital world can

behave like the real world. • Increase confidence in medical field. • With haptic hardware and software designer can feel the result as if he

were handling physical objects.

Disadvantages of Haptics Technology

• Higher cost. • Large weight & size(especially wearable ones).• From point of algorithm, output is not saturate. • The precision of touch require a lots of advance design.• Haptic interfaces can only exert forces with limited magnitude and not

equally well in all directions.

Conclusion

• Continued implementation of tactile devices to aid people with disabilities will advance further• Future generations of mobile devices and game console

accessories will implement more haptic feedback• Advances in hardware will provide opportunities to produce haptic

devices in smaller packages, and haptic technology will find its way into increasingly common place tools.

References

•  http://en.wikipedia.org/wiki/Haptic_technology/.• http://www.cyberglovesystems.com/.• https://www.inition.co.uk/extraordinary-technology/force-feed

back-haptics/.• Mandayam A Srinivasan,” What is Haptics?”, Laboratory for

Human and Machine Haptics: The Touch Lab Massachusetts Institute of Technology.

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