Abstract: In the present application, for a detailed protocol for realizing supplemental downlink communication in the filed patent, particularly, a system is proposed which performs training processing at high speed by using two-dimensionally developed information. In the present application, compared to the filed patent, a two-dimensional pilot symbol can be used in a display unit, further, introduction of a segment for communication band control using a two-dimensional pilot symbol, training processing using a two-dimensional test pattern for establishing a communication path, and a configuration of a communication frame are clarified, and MIMO processing of communication using video information by a plurality of segments is realized to improve a throughput of an existing portable phone.

Abstract: The disclosure provides a radiographic imaging device that improves visibility by preventing a phenomenon in which a stent image is inverted in an enlarged displayed video of a stent image that appears in a live image. Specifically, the present disclosure is provided with a trimming unit that performs editing such that, from among two stent markers indicating the position of a stent image that appears in a superimposed frame generated by superimposing source frames that serve as the source of a live image, a specific stent marker is constantly oriented in the same direction on the frame. As a result of using the trimming unit to edit superimposed frames that are continuously generated, a problem seen in the prior art wherein an object to be displayed within video playback is inverted does not occur.

Abstract: The purpose of the present disclosure is to provide a radiographic imaging device in which visibility is improved by preventing a phenomenon in which a stent image is inverted in an enlarged displayed video of a stent image that appears in a live image. The present disclosure makes it possible to provide a radiographic imaging device in which visibility is improved by preventing a phenomenon in which a stent image is inverted in an enlarged displayed video of a stent image that appears in a live image. Specifically, the present disclosure is provided with a trimming unit that performs editing such that, from among two stent markers indicating the position of a stent image that appears in a superimposed frame generated by superimposing source frames that serve as the source of a live image, a specific stent marker is constantly oriented in the same direction on the frame.

Abstract: In the case where DC power from a DC power supply is converted to AC power by an inverter and supplied to an AC motor, a power compensator is connected in parallel with a DC power input portion of the inverter, and a control device of the power compensator charges/discharges a power storage device to perform a power compensation process A when power demand for the AC motor exceeds a predetermined value, and takes into account power allowance which can be inputted and outputted from the DC power supply to the power storage device and performs a power storage adjustment process B of performing auxiliary charge of the power storage device within the range of the power allowance when the power compensation process A is unnecessary.

Abstract: In the case where DC power from a DC power supply is converted to AC power by an inverter and supplied to an AC motor, a power compensator is connected in parallel with a DC power input portion of the inverter, and a control device of the power compensator charges/discharges a power storage device to perform a power compensation process A when power demand for the AC motor exceeds a predetermined value, and takes into account power allowance which can be inputted and outputted from the DC power supply to the power storage device and performs a power storage adjustment process B of performing auxiliary charge of the power storage device within the range of the power allowance when the power compensation process A is unnecessary.

Abstract: In a case where a motor cannot follow up a position designated by a position instruction in a velocity operation mode, when an operation is performed in a constant power operating region, or when a voltage is saturated, a limit is put on a position deviation in a motor control apparatus. A correction position deviation amount, by which the motor cannot follow up the position instruction, is subtracted from the position deviation. Further, a motor position-within-one-revolution deviation in the subtracted correction position deviation amount is corrected in a region in which the characteristic of torque is improved. Consequently, the followingness of the motor to the motor position-within-one-revolution in the position designated by the position instruction is ensured.

Abstract: In a case where a motor cannot follow up a position designated by a position instruction in a velocity operation mode, when an operation is performed in a constant power operating region, or when a voltage is saturated, a limit is put on a position deviation in a motor control apparatus. A correction position deviation amount, by which the motor cannot follow up the position instruction, is subtracted from the position deviation. Further, a motor position-within-one-revolution deviation in the subtracted correction position deviation amount is corrected in a region in which the characteristic of torque is improved. Consequently, the followingness of the motor to the motor position-within-one-revolution in the position designated by the position instruction is ensured.

Abstract: A motor control device comprises: a current limiter 115 for limiting a current-instruction signal Ir for a motor 18 and for turning a limiting signal L from off to on when the current-instruction signal Ir reaches a predetermined value; a model-position-generating part 220 having a model of an equivalent position-control system that includes characteristics of the motor control device 100 and a control target object, and calculating rotational position of the motor 18 as a model-position signal ?m by inputting to the model a position-instruction signal ?r; a correctional acceleration-generating part 240 for generating a correctional acceleration signal ?se based on a correctional position deviation ?se when the limiting signal L turns on; and a position-instruction-generating part 260 for generating the position-instruction signal ?r based on an acceleration deviation ?r that is equal to the difference between the original-acceleration-instruction signal Va and the correctional acceleration signal ?se.

Abstract: A motor control device comprises: a current limiter 115 for limiting a current-instruction signal Ir for a motor 18 and for turning a limiting signal L from off to on when the current-instruction signal Ir reaches a predetermined value; a model-position-generating part 220 having a model of an equivalent position-control system that includes characteristics of the motor control device 100 and a control target object, and calculating rotational position of the motor 18 as a model-position signal ?m by inputting to the model a position-instruction signal ?r; a correctional acceleration-generating part 240 for generating a correctional acceleration signal ?se based on a correctional position deviation ?se when the limiting signal L turns on; and a position-instruction-generating part 260 for generating the position-instruction signal ?r based on an acceleration deviation ?r that is equal to the difference between the original-acceleration-instruction signal Va and the correctional acceleration signal ?se.

Abstract: An ideal position is calculated based on an ideal servo system model, the difference between the calculated ideal position and the actual position feedback is multiplied by a predetermined gain only for a predetermined time from the direction reversing time of the ideal position, and the result is added to the speed command as the correction amount, so that variations in the correction effect, caused by the effect of a secular variation of the friction amount and the work condition difference is suppressed and even in a machine system with large elastic change in torsion of a ball screw, a seal material, etc., undercut caused by torsion restoration after the correction, etc., is suppressed and a servo system is prevented from becoming unstable.

Abstract: Magnitudes of a sine-wave component and a cosine-wave component of a periodical disturbance are estimated in real time during motor rotating, the sine-wave component and the cosine-wave component at the frequency of the disturbance estimated are combined, and the result is added to a current command as a correction value in real time during the normal motor driving for controlling servomotor, thereby suppressing the effect of the periodical disturbance.

Abstract: In a servo control apparatus in which a machine system is driven by a servo motor, a phase compensation device is provided. The phase compensating device calculates a speed component (phase delay compensation signal) corresponding to a phase delay caused by a mechanical resonance suppressing filter which is provided so as to suppress resonance and mechanical vibrations, produced by a characteristic frequency owned by the machine system. While such a signal obtained by adding this speed component (phase delay compensation signal) to an actual motor speed is used as a speed feedback signal for a control operation, unstable conditions of a servo system, which are caused by the phase delay caused when the mechanical resonance filter is applied, are suppressed, and a high gain of the servo control apparatus is realized.

Abstract: In a servo control apparatus in which a machine system is driven by a servo motor, a phase compensation device is provided. The phase compensating device calculates a speed component (phase delay compensation signal) corresponding to a phase delay caused by a mechanical resonance suppressing filter which is provided so as to suppress resonance and mechanical vibrations, produced by a characteristic frequency owned by the machine system. While such a signal obtained by adding this speed component (phase delay compensation signal) to an actual motor speed is used as a speed feedback signal for a control operation, unstable conditions of a servo system, which are caused by the phase delay caused when the mechanical resonance filter is applied, are suppressed, and a high gain of the servo control apparatus is realized.

Abstract: According to the present invention, in a first acceleration after power is turned ON, currents flowing through U-phase and V-phase of a servo motor output terminal are detected, and misconnection of the motor output terminal is detected by monitoring a pattern of the current wave form.

Abstract: According to the present invention, in a first acceleration after power is turned ON, currents flowing through U-phase and V-phase of a servo motor output terminal are detected, and misconnection of the motor output terminal is detected by monitoring a pattern of the current wave form.

Abstract: According to the present invention, in a first acceleration after power is turned ON, currents flowing through U-phase and V-phase of a servo motor output terminal are detected, and misconnection of the motor output terminal is detected by monitoring a pattern of the current wave form.