Slip Classification Using Tangential and Torsional Skin Distortions on a Biomimetic Tactile Sensor

نویسندگان

  • Zhe Su
  • Karol Hausman
  • Yevgen Chebotar
  • Artem Molchanov
  • Gerald E. Loeb
  • Gaurav S. Sukhatme
  • Stefan Schaal
چکیده

I. INTRODUCTION There are two main categories of object slip: linear and rotational. During linear slip, the object maintains its orientation with respect to the local end-effector frame but gradually slides out of the robot fingers. During rotational slip, the center of mass of the object tends to rotate about an axis normal to the grasp surface, although the point of contact with the robot's fingers might stay the same. It is important to discriminate between these two kinds of slip to react and control finger forces accordingly. Previous study has shown rotational slip requires much stronger finger force response than linear slip in order to robustly keep the object grasped within the hand [1].

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Slip Detection and Classification for Grip Control using Multiple Sensory Modalities on a Biomimetic Tactile Sensor

Achieving human-level performance in dexterous grasping tasks will likely require richer tactile sensing than is currently available [1]. Recently, biomimetic tactile sensors, designed to provide more humanlike capabilities, have been developed. These new sensors provide an opportunity to significantly improve the robustness of robotic manipulation. In order to take full advantage of the inform...

متن کامل

Force Estimation and Slip Detection for Grip Control using a Biomimetic Tactile Sensor

We introduce and evaluate contact-based techniques to estimate tactile properties and detect manipulation events using a biomimetic tactile sensor. In particular, we estimate finger forces, and detect and classify slip events. In addition, we present a grip force controller that uses the estimation results to gently pick up objects of various weights and texture. The estimation techniques and t...

متن کامل

I. INTRODUCTION NE promising strategy for tactile sensing is based on measuring the deformation of a flexible skin (cosmesis) and an underlying conductive fluid layer by its effect on the impedance of electrodes on the surface of a rigid core

Grasping of objects by robotic hands in unstructured environments demands a sensor surface that is durable, compliant, and responsive to various force and slip conditions. A compliant and robust skin can be as critical to grasping objects as the sensor it protects. In an effort to combine compliant mechanics and robust sensing, a biomimetic tactile sensor is being developed. Deformations of its...

متن کامل

Dynamics of fingertip contact during the onset of tangential slip

Through highly precise perceptual and sensorimotor activities, the human tactile system continuously acquires information about the environment. Mechanical interactions between the skin at the point of contact and a touched surface serve as the source of this tactile information. Using a dedicated custom robotic platform, we imaged skin deformation at the contact area between the finger and a f...

متن کامل

Tactile sensing is the detection and measurement of spatial distribution of forces perpendicular to a pre-determined sensory area, and the subsequent interpretation of the spatial information

This paper describes a concept and presents the experimental results for robotic end-effector operation for handling product items that are flexible or variable in physical properties such as size, shape or firmness and also describes a scheme by which a manipulator can use dynamic tactile sensing to detect when it is about to lose hold of a grasped object and take preventive measures before gr...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2015