Abstract: A nuclear power plant control system (1) includes a control button (21) which receives an operation for controlling a control target device (40), a notification lamp (12) which notifies that a control signal corresponding to the operation received by the control button (21) arrives at a predetermined position on a path connected from a control panel (20) to the control target device (40), and a control signal inhibition unit (33) which inhibits a control signal from arriving at the control target device (40) in midstream between the predetermined position on the path and the control target device (40) in response to an operation received by a test permission button (11).

Abstract: Using a machine tool, a workpiece is machined while periodically varying the rotational speed of a spindle thereof. Correlation data on correlation between a speed variation rate RVA of the spindle rotational speed, a speed variation period ratio RVF thereof, and vibration of a tool when machining the workpiece while periodically varying the spindle rotational speed is previously obtained. Based on the correlation data, the speed variation rate RVA and the speed variation period ratio RVF are set so that the vibration of the tool and machining accuracy are within their respective allowable ranges, and based on the set speed variation rate RVA and speed variation period ratio RVF, a variation amplitude and a variation period of the spindle rotational speed are determined. The spindle is rotated at the rotational speed varying at the determined amplitude and period with respect to a target rotational speed, thereby machining the workpiece.

Abstract: A nuclear power control system includes: a safety protection apparatus which outputs a first safety mode operating signal while outputting a first unsafety mode operating signal; a CCF apparatus that outputs a second safety mode operating signal; and a signal input/output circuit that is connected to the safety protection apparatus and the CCF apparatus. The signal input/output circuit includes an OR circuit that outputs a third safety mode operating signal based on the presence or absence of an input of the first safety mode operating signal and the second safety mode operating signal; a NOT circuit that is connected to the output side of the OR circuit; and an AND circuit that outputs a third unsafety mode operating signal, and the presence and absence of an input of a first unsafety mode operating signal.

Abstract: A reactor shutdown system includes a reactor, a control-rod drive unit that can drive a control rod in pulling and inserting directions with respect to a fuel assembly, a power source that can supply power to the control-rod drive unit, and a power converter that is provided between the control-rod drive unit and the power source, in which when power supply is cut off, the control-rod drive unit inserts the control rod into the fuel assembly to stop nuclear reaction in the reactor, and the reactor shutdown system includes a reactor trip breaker provided between the power converter and the control-rod drive unit, a safety protection-system device that controls the reactor trip breaker to cut off power supply to the control-rod drive unit, and a CCF device that controls the power converter to cut off power supply to the control-rod drive unit.

Abstract: An in-wheel motor system can drive an in-wheel motor stably, and also allows power feeding from the road surface, even when transmission and reception coils are misaligned. An in-wheel motor system (1) includes a power transmitter (100) that utilizes a resonance phenomenon using a magnetic field. The power transmitter (100) transmits power (P) wirelessly from the vehicle body to an in-wheel motor (10) mounted in a wheel. The in-wheel motor system (1) may also include a communication interface (110) that communicates between the vehicle body and the wheel, and the communication interface (110) may transmit a control signal (CTL) for driving the in-wheel motor.

Abstract: A stainless steel material having compositions which contain on the basis of percent by mass, C from 0.04 to 0.12%, Ni from 0 (including a case of no addition) to 5.0%, Cr from 12.0 to 17.0%, N from 0.0 to 0.10%, Si from 0.2 to 2.0%, Mn at 2.0% or less, Cu from 0.0 to 2.0%, P at 0.06% or less, S at 0.006% or less, with residue being Fe and unavoidable impurities. Further, a parent phase has any one of a single phase structure of ferrite phase or martensite phase and a diploid phase structure of ferrite phase and martensite phase. An end of the base material is melt-welded as a joint to form a pipe. The parent phase is provided with carbide uniformly separated at grain boundaries and within grains, with a dissolved amount of C being 0.03% by mass or less.

Abstract: A control device includes a main actuator configured to drive a plant through a torque transfer device disposed on a driving side, a load side sub-actuator configured to drive the plant that is disposed on a plant side, and a processor configured to: generate a torque reference input value driving the main actuator and the load side sub-actuator, and cancel out resonance by multiplying the generated torque reference input value by: a first gain including an inertia coefficient, a viscosity coefficient, and a reduction ratio of the torque transfer device on the driving side and on the plant side, and a second gain including: the inertia coefficient, the viscosity coefficient, and the reduction ratio of the torque transfer device on the driving side and on the plant side, and thereby adjusting a ratio of the torque reference input value of the main actuator and the load side sub-actuator.

Abstract: A machine tool includes a spindle retaining a tool, a spindle motor, a feed device relatively moving a workpiece and a tool with a feed motor, a spindle motor control unit, and a feed motor control unit. The spindle motor control unit continuously varies a rotational speed of the spindle in a periodic or non-periodic manner with a predetermined amplitude with respect to a target rotational speed. The feed motor control unit controls the feed motor in synchronization with the control of the spindle motor to continuously vary a relative moving speed between the tool and the workpiece such that a ratio of the rotational speed of the spindle to the moving speed does not become constant at least in a predetermined time zone in which a spindle speed reaches a maximal value and a predetermined time zone in which the spindle speed reaches a minimal value.

Abstract: A controller has a control unit generating a control signal to control a drive motor and a friction compensation unit adding a friction compensation signal to the control signal for compensating for a positioning error caused by friction in a guide unit. When reversing the direction of movement of the movable body, the friction compensation unit generates a friction compensation signal in accordance with a function f(?) representing a friction compensation value uf by a relationship with a variable ? and asymptotically approaching the maximum value and the minimum value of the friction compensation value uf and having an inflection point therebetween, and adds the generated friction compensation signal to the control signal generated by the control unit during movement of the movable body a predetermined movement distance from before to after the reversing.

Abstract: A log analysis system includes a first processor unit, a second processor unit, a third processor unit, and a fourth processor unit. The first processor unit normalizes the detection log acquired by an acquirer, allocating the detection log into predefined monitoring target units, and outputs the monitoring target units. The second processor unit appends common information based on a predefined rule to each of the monitoring target units of the detection log output from the first processor unit, arranges the monitoring target units into information granularities based on the content of the detection log and common information, and outputs the monitoring target units as analysis unit information. The third processor unit gathers the analysis unit information output from the second processor unit and setting detection target event candidates based on a predefined rule, and outputs the detection target event candidates and the determination results.

Abstract: A log analysis system for analyze a detection log detected in a monitoring target system includes an acquisition device for detecting detection target processes performed in the monitoring target system, and acquiring a detection log of the detection target processes; and a processor device for processing the detection log acquired by the acquirer. The processor device includes a plurality of processing blocks that perform processing on the detection log sequentially. The processor device performs processing while sending the detection log in order from a most-upstream processing block to downstream processing blocks. A most-downstream processing block of the processor device notifies the most-upstream processing block of the processor device that the detection log has been received.

Abstract: According to the invention methods and structures for determining whether impingement of x-ray radiation upon potentially vulnerable discrete components, circuits and/or circuit pathways of an implantable medical device (IMD) causes modifications or damage thereto. The invention includes structures for deflecting impingement of x-ray radiation from said potentially vulnerable components, circuits and/or circuit pathways. The x-ray radiation can be generated by various imaging modalities or unknown sources. Myriad IMDs can utilize the teaching of the present invention, including for example, a pacemaker, a drug delivery pump, a nerve stimulation device, a muscle stimulation device, an implantable cardioverter-defibrillator, a subcutaneous defibrillator, a deep brain stimulator or the like.

Abstract: At a carriage that shows a resonance mode in opposite phase to a resonance mode shown by a plate table where an interferometer which measures a position (a first controlled variable) of a plate stage driven according to a control input is installed, another interferometer is installed which measures a position (the second controlled variable) of the plate stage. By using the interferometer and the another interferometer, it becomes possible to design a driving system robust in a high bandwidth that drives the plate stage.

Abstract: Iron body 1 includes pressing surface 6 having pointed front end portion 6a and rear end portion 6b and a concave power receiving portion 14 having power receiving terminals 15. Stand 16 includes seat 17 here iron body 1 is placed with the front inclined upward, convex power supply portion 18 having electrodes 20, and receiving portion 24. In a cordless iron with iron body 1 placed on stand 16, rear end portion 6b is received in receiving portion 24, power receiving portion 14 and power supply portion 18 are fitted, and power receiving terminals 15 and electrodes 20 are electrically connected. The joint of power receiving terminals 15 and electrodes 20 are positioned ahead of rear end portion 6b. Therefore, since the area of pressing surface 6 is ensured and thermal capacity is ensured, it is possible to make rear end portion 6b pointed. Further, it is possible to see rear end portion 6b.

Abstract: An iron body includes a concave power receiving portion at the rear portion of a grip and power receiving terminals in the power receiving portion. Stand includes seat where iron body is placed with the front inclined upward, convex power supply portion at the rear portion of seat, and electrodes in power supply portion. A support portion protruding vertically rearward is formed in the power receiving portion, slit where the support portion is fitted is formed on the top of power supply portion, guide portion inclining toward slit and guiding the support portion is formed at the front of power supply portion, and bulged portion protruding in an arc shape toward power receiving portion and guiding the power receiving portion is formed at the lower portion of the front of power supply portion.

Abstract: A control device includes first driving means for driving a plant through torque transfer means, placed on a driving side, second driving means for driving the plant, placed on a plant side, reference input generation means for generating a torque reference input value for driving the first and second driving means, and resonance cancellation means for canceling out resonance by multiplying the torque reference input value by a first gain including an inertia coefficient, a viscosity coefficient and a reduction ratio of the torque transfer means on the driving side and on the plant side and multiplying the torque reference input value by a second gain including the inertia coefficient, the viscosity coefficient and the reduction ratio of the torque transfer means on the driving side and on the plant side, and thereby adjusting a ratio of the torque reference input value for the first and second driving means.