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In this paper, a haptic fishing robot, Fishbot, for virtual fishing system is presented, to simulate the motion of fish. XY table is controlled by position servo drivers with variable torque constraint to move Fishbot, and a wheel axis is controlled by a torque servo driver. Finally, our Fishbot detects the end point of a fishing pole with stereo camera to recognize the fishing pole of a user, and...
Previous work has shown that high frequency content is important for realistic haptic feedback, while stability considerations limit the ability of closed-loop control to effectively generate high frequencies. Open-loop playback of high frequencies offers a promising way to generate rich contact transients and textures, but complex high frequency dynamics cause distortion. This paper explores the...
In this paper, Dual Differential Rheological Actuator (DDRA) is discussed. DDRA is an actuator with high performance torque and position control characteristics, in addition to versatile, safe, robust and easily controllable robotic interactions. DDRA's design is based on the use of two magnetorheological (MR) brakes coupled to an EM motor and to the system's output through a dual differential mechanism...
This article presents the experimental verification of kinematic and dynamic models of the PHANToM Premium 1.0 haptic device. Dynamic properties are evaluated, in order to apply nonlinear control techniques and evaluation of manipulability and energy in real-time. Position kinematics and differential kinematics are validated for the trajectory planning by using joint control techniques for local haptic...
The present paper proposes a whole-body haptic sensing system with multiple supporting points for a body and sensor mechanism. Using this mechanism, the position of a single contact point on the robot is calculated without any sensor array. The mechanism is composed of a cylindrical end-effector surrounding the body and multiple force sensor devices. An external force is transmitted to the sensor...
Fixed-Base Exoskeleton applications have increased rapidly in the last few years, evidently as part of promising rehabilitation robotic programs of the robotics worldwide community, where in particular Human-Robot-Interaction (HRI) plays an important role in its design and control because they are tightly coupled to human-limbs. Exoskeletons embrace HRI as well as technological and theoretical challenges...
A robot controller is developed for human-robot handshaking. The focus of the work is to provide realistic experiences for the human participant in haptic interactions with a robot. To achieve this goal, a position-based admittance controller is implemented. By using haptic data as inputs, a hidden Markov model-based high-level controller is used to estimate human intentions and modify the reference...
Teleoperation systems have been extensively analyzed for transparency and stability previously. There has been, however, little focus on performance and stability constraints like the presence of sensor noise and its effect on the stability of the teleoperation system. The effect of sensor noise becomes all the more important in case of macro-micro world interactions and in applications like tele-haptic...
In order to realize communication and broadcasting of haptic information, bilateral control with communication time delay is important element. The paper proposes a novel bilateral control method for communication time delay. To compensate the effect of communication time delay, the proposed method applies a motion copying system. The motion copying system is able to save and reproduce motion of human...
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