Developing hybrid force feedback: coupling brakes and motors can reduce the total actuator size and improve haptics quality

Hand-worn haptic systems must be able to produce high-quality haptics while also being lightweight and energy-efficient. In order to meet market expectations, research is being done into novel drivetrains that may be implemented in hand worn devices. This is being pushed forward by the growing demand in the virtual reality sector, which is...

Haptic feedback in the steering system of the FRISC: A proof-of-concept

The FRISC is a high speed craft of the Netherlands Navy which came into use in 2012. Because these vessels sail with speeds up to 45 knots in inshore waters, a large amount of focus and accurate path following is needed for safe navigation, and due to large accelerations, there is a high level of physical strain. These two factors cause a high ...

End effector admittance control of parallel manipulators without force sensor

A telemanipulation system lets a human operator manipulate an environment on distance, using a master and a slave device, which are connected by a bilateral controller that controls the master and the slave device and provides the communication between these devices. The master device is manipulated by the operator and these actions are...

Forces in needle interventions: Measuring tip forces

Accurate positioning of the needle tip during insertion is essential to ensure a maximum effect of the treatment. Target error is a problem and a lot research fields aim to improve needle insertions. The possibility to measure cutting force and stiffness force separately from friction forces supports the development of new types of needles,...

Force and pressure feedback during epidural needle insertion in the ligamentum flavum of piglets.

Epidural anesthesia is a commonly used anesthesia method during surgery or giving birth to a child. During the insertion of the needle in the back of the patient, the anesthetist has to interpret the different forces which requires extensive skills. To obtain these skills the residents train on patients, which is not without risk. Due to a lot...

Improving the Quality of Haptic Feedback Yields Only Marginal Improvements in Teleoperated Task Performance

In teleoperations, haptic feedback allows the human operator to touch the remote environment. Yet it is only partially understood to what extent the quality of haptic feedback contributes to human-in-the-loop task performance. This paper presents a human factors experiment in which telemanipulated task performance is assessed for three stages of...