Abstract: A combination of setting a correction value of an atmospheric temperature for each temporal section in response to a predicted value of a variation of the atmospheric temperature in a day and a delayed variation of a temperature of hydraulic oil due to thermal inertia and correcting a command value for a temperature regulation of the hydraulic oil at a supply source of the hydraulic oil in response to the correction value of the atmospheric temperature, performing a feed forward compensation of the temperature of the hydraulic oil with respect to the variation of the atmospheric temperature for the day as a cyclic period, permits a working body of hydraulic oil to be kept at an adequate temperature, even under working conditions subjected to significant influences of atmospheric temperature variations and thermal inertia.

Abstract: A multilayer feedthrough capacitor of the present invention has an internal structure of stacking one over another alternately dielectric sheets 1a, on each of which signal feedthrough electrodes 2a, 2b and 2c and separating earth electrodes 7a and 7b are disposed alternately, and dielectric sheets 1b, on each of which earth electrodes 3a and 3b having protrusions 8a and 8b, respectively, are formed. On one pair of the end surfaces of this stacked dielectric body are formed first external electrodes 4a, 4b and 4c that are connected to signal feedthrough electrodes 2a, 2b and 2c, respectively, and third external electrodes 9a and 9b that are connected to both separating earth electrodes 7a and 7b and protrusions 8a and 8b, respectively. On the other pair of the end surfaces are formed second external electrodes 5a and 5b that are connected to earth electrodes 3a and 3b, respectively.

Abstract: A reduced size three-terminal type capacitor for removing jamming signals from an electrical signal. The three-terminal type capacitor comprises a ceramic substrate with a first ground electrode layer formed on the ceramic substrate, and a first dielectric layer formed on the first ground electrode layer. On the first dielectric layer reaching at least from one end of the first dielectric layer to the other end is a signal electrode. A second dielectric layer is formed on the first dielectric layer to surround the signal electrode together with the first dielectric layer, and a second ground electrode layer is formed on the second dielectric layer together with the first ground electrode layer. The second ground electrode layer is electrically connected to the first ground electrode layer. The structure of this three-terminal capacitor is such that first and second conductive layers (i.e.

Abstract: A reduced size three-terminal type capacitor for removing jamming signals from an electrical signal. The three-terminal type capacitor comprises a ceramic substrate with a first ground electrode layer formed on the ceramic substrate, and a first dielectric layer formed on the first ground electrode layer. On the first dielectric layer reaching at least from one end of the first dielectric layer to the other end is a signal electrode. A second dielectric layer is formed on the first dielectric layer to surround the signal electrode together with the first dielectric layer, and a second ground electrode layer is formed on the second dielectric layer together with the first ground electrode layer. The second ground electrode layer is electrically connected to the first ground electrode layer. The structure of this three-terminal capacitor is such that first and second conductive layers (i.e.

Abstract: An apparatus for controlling the opening/closing of a mechanism for clamping a work machined by a numerically controlled machine tool, comprising a driver for the clamping mechanism. The apparatus controls the opening/closing of the clamping mechanism on the basis of measured data on the distance of a main shaft provided in the machine body from the origin position of the machine, measured data on the moving speed of the main shaft, coordinate values of a clamp pawl of the clamping mechanism and data on a region where the clamping mechanism is opened.