The primary goal of the research proposed here is to develop a control scheme for passive haptic devices used as a master device during teleoperation. Haptic, or force-feedback devices can be divided into two groups based on the energetic nature of their actuators, either passive or active. The research here studies the passive devices, more specifically dissipative passive devices that use bra...

In this study, the efficacy of Coriandrum and salvia extracts in spatial and passive avoidance memory in mice was studied. 56 male mice (25-30g) divided randomly into 8 groups: negative control, positive control and extract administered (50, 100 and 200 mg/kg of both plants), and treated for 25 days. negative and positive control group received normal saline and Ritalin respectively. After trai...

This paper provides a passivity based framework to synthesise l 2 -stable digital control networks in which m strictly-output passive controllers can control n−m strictly-output passive plants. The communication between the plants and controllers can tolerate time varying delay and data dropouts. In particular, we introduce a power-junction-network, a general class of input-output-wave-variable...

In this paper, we present the analysis to demonstrate that the inverse optimal control, based on a CLF, is passive. In order to do so, a storage function and a supply rate are established using the construction of such control and the properties of passive systems; these functions allow to state that this inverse optimal control is indeed passive.

In displaying a virtual wall using a passive haptic device equipped with passive actuators such as electric brakes, unsmooth motion frequently occurs. This undesirable behavior is attributed to time delay due to slowness in the virtual environment update and force approximation due to the inability of a brake to generate torque in arbitrary directions. In this paper a new control scheme called ...

[Purpose] This study evaluated effects of a high-intensity linear polarized near-infrared ray irradiation for mitigation of muscle hypertonia. [Subjects] The subjects were 20 patients with cerebrovascular disease. [Methods] Subjects were randomly allocated to an intervention or control group. The intervention group received irradiation of the triceps surae. Passive range of motion and passive r...

This paper presents a Fluid–Structure-Interaction study of novel passive adaptive shock control bump concept. A flexible plate, clamped on all sides and placed above sealed cavity, was tested beneath Mach 1.4 normal in the Imperial College London supersonic wind tunnel. The plate actuated into shape 3D by passively controlling cavity pressure through an array breather holes. Preliminary experim...