This paper discusses the stable range of a 1 degree-of-freedom haptic system in admittance display. The human operator is regarded as a combination of passive impedance and active input in the system. And the virtual environment is assumed to be passive. Through analogous treatment between the haptic system and electrical network system, port theory was used to analyze the system. Considering a...

Proportional harmonic current sharing among inverters is desired in ac microgrid with nonlinear loads. Usually, virtual impedance emulated to achieve good at the cost of increased voltage distortion system. Existing schemes overcome this issue by communicating and/or values inverters, thereby requiring significant data exchange. Further, some them suffer from single point failure because their ...

iran’s industry has had a considerable number of difficulties to perform so well as was expected in the post – revolutionary era. unfavorable legal, political environments combined with eight –year imposed war may be singled out as the root causes of such performances. however, this paper argues that our industry’s lack of realization of its dire need to adapt to the emerging unprecedented envi...

-In haptic devices the problem of major concern is the inertia offered by the haptic device. When using it in unconstrained space, it should offer the least inertia. Depending on the interaction mechanism we are required to adapt different control algorithms to maintain transparency. This paper investigates force feedback method of inertia reduction and analyses its advantages over the feed for...