Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras
A Multimodal 3-degrees of Freedom Haptic Device
Technology Category/Market
Technology: A Multimodal 3-degrees of Freedom Haptic Device
Category: Assistive, Test Equipment & Design Manufacturing/Robotics & Automation
Industry: Biomedical/Gaming/Automotive
Application: Haptic sensation /Remote environment
Market: The global market size is estimated to be worth USD 3.9 billion in 2022 and is projected to reach USD 5.0 billion by 2028, at a CAGR of 3.7% during the forecast period.
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Problem Statement
- Haptics, the sense of touch, combines kinesthetic and tactile forces for human interaction in remote or virtual environments.
- Existing devices struggle to display tactile effects due to bulkiness and complexity.
- Researchers propose devices that can render stiffness with shape or texture but not both, but face limitations in resolution and workspace.
- Multi-fingered haptic interfaces are being developed to improve fidelity, workspace, and human adaptability, making them suitable for applications like rehabilitation, telesurgery, training, and gaming involving grasping, exploration, and manipulation.
Technology
- A haptic device is a system that displays tactile sensations based on contact force, consisting of a texture module, actuators, a position control module, and an impedance control module.
- The texture module displays tactile sensations based on a contact force, and the actuators simulate vibrations or shapes based on the selected texture and geometric shape.
- The position control module creates a virtual environment with shape, shear, and texture, while the impedance control module provides stiffness based on the contact force.
- The device generates feedback based on stiffness, texture, shear, or shape.
- A grasper is a part of the device, with a first and second segment with finger access, allowing the user to exert force on the textures.
- The device also has a position control module and an impedance control module, enabling the user to generate actions based on stiffness, texture, shear, or shape.
Key Features/Value Proposition
“Task Sensation Sensor”
- Includes grasper segment and texture module.
- Spherical, connected to rollers.
Belt Division
- Belt divided into zones.
- Vibro-actuators placed under texture module.
Position Control Module
- Includes gimbal arrangement for pitch and roll.
- Includes linear guide and four-bar stiffness mechanism.
Texture Module
- Includes semicircular cylindrical drum.
- Includes vibro-actuators for shape simulation.
Texture Module
- Includes first and second crowned rollers.
- Includes drive roller.
- Includes belt with textures.
Questions about this Technology?
Contact for Licensing
Research Lab
Prof.Asokan T
Department of Engineering Design
Intellectual Property
IITM IDF Ref 1949
Patent No: IN 549191
PCT/IN2020/050903
Technology Readiness Level
TRL- 4
Technology validated in lab