摘要:
In nonlinear optimization a plurality of optimization methods are stored in a computer system as are techniques (knowledge) for applying those methods. Such techniques may be divided into common knowledge which are techniques applicable to all nonlinear optimization methods and domain knowledge which are techniques applicable to a corresponding one of the methods. When an optimization problem is input to the computer system, the system first selects one of the methods and applies it to the problem using the common knowledge and any relevant domain knowledge. If that method does not produce an optimum result, the system tries to solve the problem with another method, again making use of the common knowledge and the respective domain knowledge. This process is repeated until an optimum solution is obtained. The method is applicable to computer control of industrial plants and systems and to computer aided design.
摘要:
A hydraulic valve lifter having function to stop valve drive comprises a cylinder, a lifter body sliding in the cylinder, a cam driving the lifter body, a tappet sliding in the lifter body, a valve driven by the tappet, a plunger located between the lifter body and the tappet, a reservoir formed in the lifter body and being in fluid communication with a hydraulic source always, a first pressure room formed in the tappet and separated from the reservoir via the plunger, a check valve controlling a communication between the reservoir and the first pressure room, a piston sliding in the lifter body and having a rod driving the check valve, a second pressure room located at one side of the piston and being in fluid communication with the hydraulic source via a control valve, a room located at the other side of the piston, and a passage decreasing a pressure in the room.
摘要:
A belt including a main body formed into an endless configuration with a plurality of substantially equally pitched approximately round shafts embedded in the main body. Also included are a plurality of wires engaged along nearly an entire lengthwise portion of each of the shafts. The wires can be interlaced with the shafts or wound on the shafts and the wires can be a twisted thread of organic fiber, inorganic fiber, or glass fiber. The main body can be made of rubber of high rigidity having a longitudinal elastic coefficient of approximately 10-140 kg/mm.sup.2. The main body could also be made of refractory synthetic resin having a longitudinal elastic coefficient of 5-150 kg/mm.sup.2. Each shaft can be of substantially the same diameter along its entire length.
摘要:
There is provided a novel initial core arrangement of a nuclear reactor. The fuel assemblies in the central region of the reactor core occupying more than 50% of the total area of the reactor core are grouped into a plurality of fuel units each of which being constituted by four adjacent fuel assemblies. The fuel assemblies in each fuel unit are replaced one by one at each fuel replacement cycle with a new fuel assembly. The initial core is so arranged that each fuel unit has one gadolinia containing high enrichment fuel assembly and three low enrichment fuel assemblies containing no gadolinea. This arrangement permits a stable reactor operation substantially equivalent to that obtained in the state of equilibrium (equilibrium core), even with an initial core.
摘要:
A pull tab attachment tool comprises a pair of first and second levers connected together for pivotal movement and having respectively first and second handle portions and opposed jaw portions extending from their one ends. The second lever has a roller. A third lever is pivotally connected to the first lever. An urging means acts between the first and third levers to normally urge them apart so that the third lever is held in rolling engagement with the roller. When the first and second handle portions are manually actuated to move toward each other, the opposed jaw portions are brought into engagement with each other to provide a first pressing structure, and one end of the third lever is brought into engagement with the one end of the first lever through the rolling action of the roller along the third lever to provide a second pressing structure.
摘要:
A scintillator panel including: a plate-like substrate; a grid-like barrier rib provided on the substrate; and a scintillator layer composed of a phosphor filled in cells divided by the barrier rib, wherein the barrier rib is formed of a material which is mainly composed of a low-melting-point glass containing 2 to 20% by mass of an alkali metal oxide. The scintillator panel is provided with a narrow barrier rib with high accuracy in a large area, and the scintillator panel has high luminous efficiency, and provides sharp images.
摘要:
A scintillator panel including: a plate-like substrate; a grid-like barrier rib provided on the substrate; and a scintillator layer composed of a phosphor filled in cells divided by the barrier rib, wherein the barrier rib is formed of a material which is mainly composed of a low-melting-point glass containing 2 to 20% by mass of an alkali metal oxide. The scintillator panel is provided with a narrow barrier rib with high accuracy in a large area, and the scintillator panel has high luminous efficiency, and provides sharp images.
摘要:
The life of a lead acid storage batttery is extended by changing an over-frequency equalized charge interval performed on a lead acid storage batttery, in accordance with a transition situation of a state of charge (SOC) of the lead acid storage batttery. The lead acid storage batttery is also made to be advantageous in terms of cost by reducing the equalized charge with a low degree of urgency to reduce the power and cost for equalized charge, and by reducing the number of stops of a natural energy storage system. A lead acid storage batttery and a lead acid storage batttery system whose operational management can be easily performed are achieved by a method in which the future timing when the equalized charge is performed can be grasped by people operating the lead acid storage batttery. The lead acid storage batttery and the lead acid storage batttery system include: a storage batttery state measurement unit; an SOC model; an SOC estimation unit configured to estimate an SOC from the information measured by the storage batttery state measurement unit and the information from the SOC model; an SOC transition DB configure to record an SOC transition situation of the lead acid storage batttery; an SOC transition history management unit configured to record, in the SOC transition DB, an estimated SOC value and to check an SOC transition situation; a degradation model of the lead acid storage batttery; an equalized charge optimal planning unit configured to plan an optimal method of performing the equalized charge based on the information on the SOC transition situation from the SOC transition history management unit and the information from the degradation model; an SOC transition information-equalized charge information output unit; and an equalized charge control unit configured to perform the equalized charge on the lead acid storage batttery in accordance with the plan determined by the equalized charge optimal planning unit.
摘要:
There are implemented a method which allows a present state of charge to be precisely estimated not only for a new battery, but also for a lead accumulator that has deteriorated with the lapse of a certain period since first use thereof, and a lead accumulator which can be increased in lifetime and reduced in cost using information on the precisely determined state of charge. An accumulator device includes an accumulator, a terminal voltage measurement unit for measuring a terminal voltage of the accumulator, a current measurement unit for measuring a current flowing in the accumulator, multi-dimensional characteristic models in which a plurality of relational models each between the measured terminal voltage, current and the state of charge are prepared for each of deterioration degrees, a deterioration degree estimation unit for estimating a present deterioration degree of the accumulator, a corresponding model selective determination unit for selectively determining, based on the deterioration degree determined by the deterioration degree estimation unit, a corresponding model from among the multi-dimensional characteristic models, and a state of charge estimation unit for estimating the present state of charge using the model selectively determined by the corresponding model selective determination unit.
摘要:
An actuator includes a motor, an input rotation member driven by the motor, an input contacting portion formed on the input rotation member, a bush disposed so as to be relatively rotatable to the input rotation member, a first contacting portion and an engaging portion formed on the bush, a spiral spring including an outer circumferential hook portion in contact with the input contacting portion of the input rotation member, and an inner circumferential hook portion engageable with the engaging portion of the bush, the spiral spring storing a rotational force of the input rotation member as an potential energy via the input contacting portion, an output member disposed so as to be relatively rotatable to the input rotation member, an output contacting portion formed on the output member and in contact with the outer circumferential hook portion of the spiral spring; the output contacting portion transmitting the potential energy stored in the spiral spring to the output member; wherein the bush includes a second contacting portion positioned at a predetermined angle with the first contacting portion in a rotational direction of the bush and, the second contacting portion formed so as to contact with the input rotation member and the output member during the rotation of the bush relative to the input rotation member and the output member.