碩士 / 國立高雄海洋科技大學 / 輪機工程研究所 / 99 / The high acceleration motion encountered by high speed boats when driving in rough sea conditions can cause damages to hull and machinery onboard, due to the impacts between the boat and the sea surface. Hence, shock absorbing design for the machinery to be installed on the boat is as important as improving the boat speed.
This research uses a high speed, single axial motion platform that can produce up to 10g acceleration to represent the vertical acceleration encountered by the hull of a high speed boat. Through accelerometers and a data acquisition system, the accelerations of the platform and driver seat (to be installed on the high speed boat) can be measured, and reduction in the acceleration in the driver seat can be estimated.
The accelerometer used in this research is a capacitive miniature accelerometer. Changes in the acceleration of the seat where the accelerometer is installed cause the changes in the gaps between two pairs of capacitor plates in the meter, such changes are reflected in the changes in capacitance and voltage of the accelerometer outputs.
The result of this research shows that (1) the effect of acceleration-reduction of the driver seat tested is increased when the accelerating frequency or the magnitude of the boat acceleration increases and (2) the effect of acceleration-reduction is more apparent when the weight applied on the deriver seats increases.
| Identifer | oai:union.ndltd.org:TW/099NKIMT484019 |
| Date | January 2011 |
| Creators | Chen,Yi-Chang, 陳奕章 |
| Contributors | J. K. Wu, 吳景凱 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 56 |
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