Abstract: A controller has a varying speed signal generation unit generating a varying speed command signal varying at predetermined amplitude and period, a current control unit generating a current command signal based on the varying speed command signal, a feedback control unit generating a correction signal based on a deviation between the varying speed command signal and a present rotational speed of the spindle motor and adding the correction signal to the current command signal, and a learning control unit calculating a disturbance component caused by cutting resistance based on the deviation every predetermined rotation angle of the spindle motor and, in synchronism with a rotation angle of the spindle motor corresponding to the varying speed command signal input into the current control unit, generating a compensation signal based on the disturbance component corresponding to the rotation angle and adding the compensation signal to the varying speed command signal.

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 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: An iron case includes: a table where an iron is placed; a receiving case that surrounds the iron and has a lower opening that is closed by the table; and a locking mechanism that detachably combines the table with the receiving case, in which the locking mechanism includes: a locking portion formed on the sides of the table; a locking body formed at the receiving case and engaged with the locking portion; an operating button disposed to be movable outwardly on the outer surface of the receiving case and operating the locking body; and a locking spring disposed in the receiving case and biasing the operating button to the table. Therefore, malfunction of the locking mechanism is prevented while usability when the receiving case is separated is improved.

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: 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: An exhaust purification apparatus for an internal combustion engine according to the present invention includes a heated gas generation apparatus configured to generate heated gas utilizing exhaust gas flowing through an exhaust passage. The heated gas generation apparatus includes a catalyst configured to provide an oxidation function, a fuel supply nozzle, and a heater. An exhaust purification unit is provided downstream of the heated gas generation apparatus. An incoming gas temperature of the exhaust purification unit is detected and estimated. An actual incoming gas temperature being a detected value and an estimated incoming gas temperature both acquired when at least the fuel supply nozzle is actuated are compared with each other. Based on the result of the comparison, the apparatus detects one of poisoning of the catalyst with HC and degradation of the catalyst. Thus, the heated gas generation apparatus is prevented from discharging HC.

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 control system allows controlling a nuclear facility in an evacuation area. The control system includes a control device in ordinary use disposed in a non-evacuation area, an emergency control device—for emergency in the evacuation area, a plant control facility connectable to the control device—and the emergency control device, a signal switching unit that switches from a normal coupling to an emergency coupling based on an emergency switch signal, a first selector switch in the non-evacuation area, a second selector switch-in the evacuation area, an AND circuit configured to output the emergency switch signal to the signal switching unit in the case where the emergency switch signal is input from the first selector switch and the emergency switch signal is input from the second selector switch.

Abstract: A nuclear power plant control system (3) is provided with detection units (30a to 30d) which detect phenomena that occurs in a nuclear power plant for each of four systems, a trip control device (20) which starts, in the case where a signal that indicates an occurrence of the phenomenon is input from at least a predetermined number of signal lines out of signal lines of two systems, processing corresponding to the phenomenon, and majority circuits (50a and 50b) which are provided for each signal line of the two systems and each output, in the case where the phenomenon is detected by N or more detection units out of the detection units (30a to 30d), a signal that indicates an occurrence of the phenomenon to a corresponding signal line.

Abstract: A tire state detection device capable of detecting a tire state with high accuracy. This tire state detection device (100) is a device for detecting the tire state of a pneumatic tire (200) affixed to a wheel and comprises a vibration input unit (110) for inputting predetermined vibration to the tire (200), a frequency information acquisition unit (120) for acquiring frequency information relating to the tire (200) when the predetermined vibration is inputted, and a tire state estimation unit (130) for extracting the resonance frequency and anti-resonance frequency of the tire (200) from the acquired frequency information and calculating, from the extracted resonance frequency and anti-resonance frequency of the tire (200), an outer moment of inertia and a spring constant when the tire (200) is modeled using the outer moment of inertia, an inner moment of inertia, and the spring constant of elastic force acting therebetween.

Abstract: A viewing area adjusting device has an image pickup unit capable of shooting a forward direction of a stereoscopic video display device capable of displaying a stereoscopic video, a viewer information detector configured to detect the number of viewers and positions of the viewers by a video shot by the image pickup unit, a viewing area adjustment policy determining unit configured to select any one of a plurality of viewing area adjustment policies based on the number of viewers detected by the viewer information detector, a viewing area information computing unit configured to compute an adjustment amount for the viewing area, and a viewing area adjusting unit configured to adjust the viewing area.

Abstract: An operation monitoring apparatus is provided with a function integration VDU (21) including a normal use system VDU (32) which operates and monitors a nuclear power plant under a normal state, and a safety protection system VDU (31) which shuts down the nuclear power plant under an abnormal state, and also a safety protection system VDU (22) which shuts down the nuclear power plant under the abnormal state, and further, a block device which inhibits an actuation of the safety protection system VDU (31) when the function integration VDU (21) is under an abnormal state, thereby capable of simplifying an operation manipulation in the nuclear power plant, and ensuring a high level of safety of an operation control.

Abstract: According to one embodiment, a video processing apparatus includes a viewer position detector, a viewing area information calculator, a keeping module, and a viewing area controller. The viewer position detector is configured to detect a position of a viewer using an image taken by a camera during displaying a two dimensional image. The viewing area information calculator is configured to calculate a control parameter so as to set a viewing area, in which a plurality of parallax images displayed on a display are viewed as a stereoscopic image, at an area depending on the position of the viewer. The keeping module is configured to keep the control parameter calculated. The viewing area controller is configured to set the viewing area according to the control parameter kept by the keeping module in synchronization with a change from displaying the two dimensional image to displaying a stereoscopic image.

Abstract: According to one embodiment, a video processing apparatus includes a viewer position detector, a viewing area information calculator, a control information keeping module, and a viewing area controller. The viewer position detector is configured to detect a position of a viewer using an image taken by a camera. The viewing area information calculator is configured to calculate a first control parameter so as to set a viewing area, in which a plurality of parallax images displayed on a display are viewed as a stereoscopic image, at an area depending on the position of the viewer. The control information keeping module is configured to keep one or a plurality of second control parameters for setting the viewing area at a predetermined area. The viewing area controller is configured to set the viewing area according to the first control parameter or the second control parameter.

Abstract: A viewing area adjusting device has an image pickup unit capable of shooting a forward direction of a stereoscopic video display device capable of displaying a stereoscopic video, a viewer information detector configured to detect the number of viewers and positions of the viewers by a video shot by the image pickup unit, a viewing area adjustment policy determining unit configured to select any one of a plurality of viewing area adjustment policies based on the number of viewers detected by the viewer information detector, a viewing area information computing unit configured to compute an adjustment amount for the viewing area, and a viewing area adjusting unit configured to adjust the viewing area.

Abstract: According to one embodiment, a video processing apparatus includes a viewer detector that performs face recognition using video photographed by a camera and acquires position information of viewers, a viewer selector that gives priority levels to the viewers on the basis of a predetermined prioritization rule and selects a predetermined number of viewers out of the viewers in order from a viewer having the highest priority level, a viewing area information calculator that calculates, using position information of the selected viewers, a control parameter for setting a viewing area in which the selected viewers are set, a viewing area controller that controls the viewing area according to the control parameter, a display that displays plural parallax images that the viewers present in the viewing area can observe as a stereoscopic video, and an apertural area controller that outputs the plural parallax images displayed on the display in a predetermined direction.

Abstract: Provided is a high-strength stainless steel material having less deterioration in mechanical strength and improved workability, particularly bending workability compared with conventional steel materials. The high-strength stainless steel material of the present invention has a specific composition, has a metal microstructure composed of two phases, that is a ferrite phase and a martensite phase, has a ?max of from 50 to 85, the ?max being represented by the following equation (1): ?max=420Wc+470WN+23WNi+7WMn?11.5WCr?11.5WSi+189??(1) wherein, Wc, WN, WNi, WMn, WCr, and WSi; represent contents (unit: mass %) of C, N, Ni, Mn, Cr, and Si relative to the total mass of the stainless steel material, respectively; and has a difference of 300 HV or less in hardness between the ferrite phase and the martensite phase.