Abstract:
PROBLEM TO BE SOLVED: To solve the problems called target transfer and lost that are caused when using a conventional window in target tracking for tracking a target on the basis of data related to a plurality of target positions obtained from sequentially obtained target signals.SOLUTION: A plurality of target positions obtained at a certain timing are correlated with a plurality of target positions to be matched being a plurality of target positions obtained at a past timing or a plurality of predicted target positions for a certain timing obtained on the basis of the target positions obtained at the past timing. Then, the target positions correlated with the target positions to be matched are stored in association with target identification data corresponding to the target positions to be matched, and as for the correlation, the plurality of target positions and the plurality of target positions to be matched are correlated such that a total sum of distances therebetween is minimized, and when a distance between a target position and a target position to be matched exceeds a prescribed distance which is modified according to target speed magnitude, correlation is not executed between the target position and the target position to be matched.
Abstract:
PROBLEM TO BE SOLVED: To provide an apparatus for detecting a railroad rail breakage capable of surely, stably, and inexpensively detecting a railroad rail breakage.SOLUTION: An apparatus for detecting a railroad rail breakage includes: an ultrasonic transducer 12 to receive ultrasonic propagating along a rail 1; and a signal processing device 16 to output an alarm signal when the ultrasonic transducer 12 receives ultrasonic propagating along the rail due to impulsive vibration generated by breakage of the rail 1.
Abstract:
PROBLEM TO BE SOLVED: To provide a fluid pressure control system capable of increasing a speed in depressurization and completely depressurizing a load with inexpensive means.SOLUTION: In a hydraulic pressure control system 10 for increasing a speed in depressurization by using a pump 12, a check valve 22 and a differential pressure valve 24, a throttle valve 32 is disposed in parallel with the check valve 22, one end side of the throttle valve 32 is connected with a downstream-side line 20b of a line 20, and the other end of the throttle portion 32 is connected to an upstream-side line 20a of the line 20. When pressure difference between the upstream-side line 20b and the upstream-side line 20a generated in the throttle valve 32 in depressurizing becomes higher than a constant pressure, the differential pressure valve 24 is operated to discharge a liquid in the downstream-side line 20b, and a pressure of the downstream-side line 20b and a pressure of the upstream-side line 20a become equal to each other through the throttle valve 32 when a detected pressure reaches a target pressure.
Abstract:
PROBLEM TO BE SOLVED: To remove interference extending in a distance direction and resulting in frequency modulation.SOLUTION: A radar interference removal apparatus, with respect to an input signal of each sweep obtained for each repetition frequency of a radar, acquires the instantaneous frequency of the input signal, calculates correlation between the instantaneous frequencies of the input signal corresponding to a focused sweep and a distance focused with a sweep following the focused sweep, determines the presence/absence of the correlation by the calculation result, and when it is determined that there is no correlation, removes the input signal.
Abstract:
PROBLEM TO BE SOLVED: To provide a flaw detecting liquid supply device which appropriately supplies liquid for a flaw detection in a performance of an ultrasonic flaw inspection, and a vehicle including the flaw detecting liquid supply device.SOLUTION: Flaw detection water in a tank 11 flows to an electromagnetic valve 144 of a flaw detecting liquid supply device 14 through an upstream water piping portion 131. Because the electromagnetic valve 144 opens and closes based on an electric pulse drive signal, the flaw detection water intermittently drops into a reservoir tank 141 to be intermittently supplied into the reservoir tank 141. The flaw detection water stored in the reservoir tank 141 is flowed to a discharge portion through a downstream water piping portion 132. Because the flaw detection water is controlled to be constant in the reservoir tank 141, the flaw detection water is constantly supplied from the reservoir tank 141 to the discharge portion and discharged continuously.
Abstract:
PROBLEM TO BE SOLVED: To realize the optimum deflection track plan, and to achieve the consistent and efficient ship operation in an automatic steering device for ships having a track computation unit for computing and outputting the reference course with respect to the desired course change amount of a ship, and a feedforward controller for performing the open loop control by computing the feedforward steering angle from the reference course.SOLUTION: A track computation unit outputs the reference course in a divided manner into the acceleration mode, the constant velocity mode, and the deceleration mode, and the feedforward controller has a transmission property expressed by the formula 1. Where, K, Tand Tdenote hull parameters, and each having the transmission characteristics of the turning force gain, and two time constants. s denotes the Laplace operator.
Abstract translation:要解决的问题:实现最佳的偏转轨迹计划,并且在用于具有轨道计算单元的船舶的自动转向装置中实现一致和有效的船舶操作,该轨道计算单元用于相对于期望的航向计算和输出参考航向 船的改变量,以及通过从参考路线计算前馈转向角来执行开环控制的前馈控制器。 轨迹计算单元将加速度模式,恒定速度模式和减速度模式分别输出到基准进程,前馈控制器具有由公式1表示的传动特性。其中,K < SB POS =“POST”> S SB>,T S SB>和T S3 SB>表示船体参数, 转向力增益的传递特性,以及两个时间常数。 s表示拉普拉斯算子。 版权所有(C)2013,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an automatic steering system for a ship having an identification function for identifying a hull parameter in a hull model capable of suppressing an adverse effect of an identification error caused by updating a nominal value with an updated value in which an identification value obtained from an identification calculation section is limited.SOLUTION: The automatic steering system includes an identification operating section 32 for identifying a hull parameter for each veering mode and an updating determination section 34 for outputting a limited updated value for the hull parameter identified by the identification operating section 32 as a hull parameter to be used. The updating determination section 34 obtains an average value of a plurality of updating values selected from updating values updated for each veering mode, and when an identification value of at least one hull parameter is deviated from the average value by a specified scale or more with respect to an identification value of a hull parameter outputted from the identification operating section 32, an average value obtained by the average value calculating section is taken as a new updating value.
Abstract:
PROBLEM TO BE SOLVED: To increase energy transmission efficiency and extend a communication distance, with contactless power transmission from a reader device to a tag in a data communication system for performing data transmission therebetween.SOLUTION: A coil antenna 26 of a reader device 10 performs transmission with a carrier frequency f. A tag 12 receives the transmission signal by a coil antenna 40, and replies from the coil antenna 40 by making a reply data to respond to the transmission signal correspond to a spread code sequence, and by performing load modulation according to the spread code sequence. After receiving the reply signal by the coil antenna 26, the reader device 10 performs correlation processing on the reply signal. The coil antenna 26 of the reader device 10 is commonly used for transmission and reception, and constitutes an LC resonance circuit tuned to the carrier frequency f. Between the coil antennas 26 and 40, resonance coils 38, 50 are provided.