摘要:
Provided is a wave-power generator capable of adjusting a natural period (natural frequency) in response to a changing wave period. The wave-power generator includes a weight that is installed in a floating body via a spring and that linearly reciprocates in response to a fluctuation of a water surface and a generator that generates power by being driven based on the linear reciprocating motion of the weight. An additional-mass body for adding a mass to the mass of the weight is further included.
摘要:
Provided is a wave-power generator capable of adjusting a natural period (natural frequency) in response to a changing wave period. The wave-power generator includes a weight that is installed in a floating body via a spring and that linearly reciprocates in response to a fluctuation of a water surface and a generator that generates power by being driven based on the linear reciprocating motion of the weight. An additional-mass body for adding a mass to the mass of the weight is further included.
摘要:
A wave power generator that can efficiently perform power generation in response to ocean-wave periods, which are waves of varying period, is provided. A vibration receiving portion that is provided in a float floating at a wave surface and that performs power generation by means of vibrations exerted thereon; a mass body that applies a mass loading on the vibration receiving portion from above; a plurality of elastic members that support the mass body in series; and a plurality of locking mechanisms that restrict/release the motion of the plurality of elastic members are provided.
摘要:
A wave power generator that can efficiently perform power generation in response to ocean-wave periods, which are waves of varying period, is provided. A vibration receiving portion that is provided in a float floating at a wave surface and that performs power generation by means of vibrations exerted thereon; a mass body that applies a mass loading on the vibration receiving portion from above; a plurality of elastic members that support the mass body in series; and a plurality of locking mechanisms that restrict/release the motion of the plurality of elastic members are provided.
摘要:
A motion reduced floating structure includes a main hull structure and a wave damping structure connected with the main hull structure. The wave damping structure may include a back board, a lower horizontal board and vertical members. The back board is connected with the main hull structure, and the lower horizontal board is connected with a lower portion of the back board to extend in a horizontal direction and is under a seawater surface in case of mooring. The vertical members are connected with the lower horizontal board and the back board. A vertical direction hole is provided for the lower horizontal board.
摘要:
Automatically tracking and photographing celestial objects and a celestial-object auto-tracking photographing apparatus, in which the burden on the CPU can be reduced by eliminating unnecessary arithmetic processes and can clearly photograph an object(s) so as to appear stationary without using an equatorial, and without using an actuator, which must be precisely controlled. The method includes moving relative to a photographic apparatus due to diurnal motion, to photograph a trimming area that has been electronically trimmed from a part of an imaging area of an image sensor, moving while the celestial object is photographed, including obtaining movement information of an image on the imaging area; setting movement data for the trimming area based on the obtained movement information of the image; and carrying out a photographing operation while moving the trimming area based on the movement data of the set trimming area at each trimming area, upon being moved.
摘要:
In order to protect an internal circuit from high voltages caused by static electricity applied to a pad of a semiconductor device, a protection circuit is configured of a clamping circuit portion (6) utilizing a MISFET (5) connected between the pad (10) and the internal circuit (3) and a gate circuit portion (8) connected to the clamping circuit portion (6). The source and bulk terminals of the MISFET (5) of the clamping circuit portion (6) are connected to the pad (10) and the internal circuit (3), the drain thereof is connected to a first power supply terminal (11), the gate thereof is connected to one terminal of a gate circuit resistor (15) and one terminal of a capacitor (16) constituting the gate circuit portion (8), the other terminal of the gate circuit resistor (15) is connected to a second power supply terminal (12), and the other terminal of the capacitor (16) is connected to the first power supply terminal (11). As a result, surge voltages of positive and negative polarity caused by static electricity can be clamped at a low voltage by a single clamping element (MISFET) per pad.
摘要:
A method of automatically tracking and photographing a celestial object, is provided, which moves relative to a photographic apparatus due to diurnal motion so that the celestial object image formed on an image sensor becomes stationary during a celestial-object auto-tracking photographing operation. The method includes inputting photographing azimuth angle and elevation angle information of the photographic apparatus; calculating preliminary-tracking drive control data based on the photographing azimuth angle and elevation angle information; obtaining first and second preliminary images corresponding to commencement and termination points of the preliminary tracking operation; calculating a deviation amount between a celestial object image in the first preliminary image and a corresponding celestial object image in the second preliminary image; calculating, from the deviation amount, actual-tracking drive control data with the deviation amount cancelled; and performing the celestial-object auto-tracking photographing operation based on the actual-tracking drive control data.
摘要:
Automatically tracking and photographing celestial objects and a celestial-object auto-tracking photographing apparatus, in which the burden on the CPU can be reduced by eliminating unnecessary arithmetic processes and can clearly photograph an object(s) so as to appear stationary without using an equatorial, and without using an actuator, which must be precisely controlled. The method includes moving relative to a photographic apparatus due to diurnal motion, to photograph a trimming area that has been electronically trimmed from a part of an imaging area of an image sensor, moving while the celestial object is photographed, including obtaining movement information of an image on the imaging area; setting movement data for the trimming area based on the obtained movement information of the image; and carrying out a photographing operation while moving the trimming area based on the movement data of the set trimming area at each trimming area, upon being moved.
摘要:
The present invention relates to a large floating structure used for a marine airport and the like and, more particularly, to a large floating structure in which the large floating structure itself has a wave absorbing function, whereby the need for a breakwater etc. is eliminated, and the installation of a separate wave absorbing structure at the outer periphery of the large floating structure is not needed, whereby an upper deck can be utilized effectively. For this purpose, under an extending portion on the up-wave side of the upper deck of large floating structure, for example, many box-shaped floating bodies arranged in a zigzag form and lattice-shaped connecting members are provided as a wave absorbing structure depending from the extending portion.