During the past fifty years the world has changed and simulation has advanced out of all recognition. The author has progressed from very large analogue computers in the early 1960s, through hybrid analogue/digital systems in the late 60s, to design and construction of digital signal processing computers in the 70s, onto early microcomputers in the 80s, used for simulation, and more recently to...

SystemC is Hardware Description Language HDL for digital systems. An extension is proposed in this paper to extended the capabilities of SystemC to allow modelling of analogue and mixed-signal systems. The proposed extension provides a variety of abstraction levels, from system level to circuit level. In order to comply with the SystemC simulation cycle semantics, the analogue kernel is linked ...

Recording the variation of joint angles as a feedback to the control unit is frequent in articulated arms. In this paper, magnetic sensor AS5045, which is a contactless encoder, is employed to measure joint angles of 6R robot and the performance of that is examined. The sensor has a low volume, two digital outputs and provides a high resolution measurement for users; furthermore its zero positi...

A broadband Circuit Analogue (CA) absorber using double-circular-loop array is investigated in this paper. A simple equivalent circuit model is presented to accurately analyze this CA absorber. The circuit simulation of the proposed model agrees well with full-wave simulations. Optimization based the equivalent circuit model, is applied to design a single-layer circuit analogue absorber using d...

In order to master the growing complexity of analogue electronic systems, modelling and simulation of analogue hardware at various levels is absolutely necessary. This paper presents an original modelling method based on the graphical description of analogue electronic functional blocks. This method is intended to be automated and integrated into a design framework: specialists create behaviour...

This paper presents a methodology for observing human skill by using a virtual task space constructed by the haptic virtual reality technology. First a haptic simulator developed for a 2-dimensional pegin-hole assembly operation in the virtual environment is presented. To examine the validity of the simulator, a comparison study between the peg-in-hole task using the simulator and that in the r...

In the present paper, a computer-aided approach to fault observability investigation of linear analog circuits is developed. The method is based on sensitivity investigation of the test characteristics in the frequency domain. The test frequencies are selected maximizing the sensitivity of the magnitude of the test characteristics. Applying postprocessing of the simulation results using macrode...