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Wireless Rapid Charger of Super Capacitor

100%

Sakai E. , Sakamoto H.

tom R. 88, nr 6

114-117

The fundamental characteristics of the wireless rapid charger of super capacitor is investigated by experiments and simulation. This system is composed of the resonant half bridge inverter and the noncontact transformer. Based on the results, the frequency control method that can do the wireless rapid charge regardless of the relative position of the windings of the noncontact transformer is proposed. It can meet the resonance requirement and large charging current can be acquired by detecting the current of the primary switch and controlling the frequency of the inverter.

Badano eksperymentalnie i podczas symulacji numerycznych charakterystyki bezprzewodowego systemu szybkiego ładowania superkondensatora. System składa się z mostkowego przekształtnika rezonansowego i bezstykowego transformatora. Na podstawie wyników zaproponowano nową częstotliwościową metodę sterowania ładowarką, niezależnie od wzajemnej pozycji uzwojeń bezstykowego transformatora. Metoda zapewnia wysoki prąd ładowania dzięki detekcji prądu przełącznika pierwotnego oraz kontroli częstotliwości przekształtnika.

Development for Sound Quality Optimisation by Taguchi Methods

80%

Sakamoto H. , Tanabe I. , Takahashi S.

tom Vol. 15, No. 2

69--81

Characteristic that is hard to obtain in the calculation in product development. The sensory characteristic is often had such as sound quality, visual sensation and tactile sensation. The evaluation method for visualizing the determination of the customer is being established by applying Taguchi-methods and so on. The fact is still got many corresponds with the method of Try & Error as numbers of cases are small in order to optimize the properties. Therefore, the study was conducted of the method for optimization of sound quality by using the innovative tool using Taguchi-methods that newly developed. The research results are summarized as follows. (1) Sensory characteristic tuning method by using Taguchi-methods was calculated the values to be optimized in a few studies, and the result was equal to or greater than the result of specialists is carried out. (2) Commonly, the sensory characteristic of optimization is conducted with the method of Try & Error; moreover, it could be confirmed that leading to improvement of productivity by using this method even though it takes time to perform so as to optimize under changing in physical condition and environment.