A significant amount of research efforts has been given to explore the mathematical basis for 3D dimensional and geometric tolerance representation, analysis, and synthesis. However, engineering semantics is not maintained in these mathematic models. In this paper, a new semantic tolerance modeling scheme based on modal interval is introduced to improve interpretability of tolerance modeling. W...

According to the soft-switching pulsed SAW (Submerged arc weld) weld power supply based on the double closed-loop constant current control mode, a small signal mathematic model of main circuit of soft-switching SAW inverter was established by applying the method of three-terminal switching device modeling method, and the mathematic model of double closed-loop phase-shift control system circuit ...

This paper reports the ANSYS simulation and fabrication processes for optimising PDMS ferroelectret performance. The proposed model extends the previously published analytical models and combines this with simulation of individual void geometry. The ferroelectret material is fabricated from PDMS using 3D-printed plastic mould. Mathematic model and Ansys simulation results predict that the perfo...

This paper describes a method for detecting impossible bigrams from a space of V 2 bigrams where V is the size of the vocabulary. The idea is to discard all the ungrammatical events which are impossible in a well written text and consequently to expect an improvement of the language model. We expect also, in speech recognition, to reduce the complexity of the search algorithm by making less com...

The mathematic models for thermal, and PV solar power inserted in the ESP-r, which is the integrating building energy and environment simulation tool, were verified with the measured da ta. Using the verified model, the energy performance of an office building, equipped toward the south with conventional absorptive single facade or unventilated double PV facade or outward ventilated double PV f...