Sensor state determination system
一种状态判断、传感器的技术，应用在传感器状态判断系统领域，能够解决没有阻尼控制、未考虑加速度传感器故障等问题
Inactive Publication Date: 2014-09-10
NIPPON SHARYO LTD +1
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[0005] However, in the damping control system described in the aforementioned Patent Document 1, the active damping control is performed based on the detected vibration acceleration on the premise that the acceleration sensor is in a normal state, without considering the failure of the acceleration sensor itself
That is, in the event of failure of the acceleration sensor itself, active damping control is performed based on the signal of the acceleration sensor in an abnormal state, so the damping control is not properly performed
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[0018] Next, a sensor state judgment system according to one embodiment of the present invention will be described with reference to the drawings. figure 1 It is a front view schematically showing the railway vehicle 1 to which the sensor state determination system 50 is applied. In this railway vehicle 1 , a vehicle body 30 is mounted on two bogies 10 arranged in the front-rear direction via air springs 20 , and a damper device 40 for damping lateral vibrations acting on the vehicle body 30 is provided. The damper device 40 is configured to be able to adjust the opening amount of a solenoid valve (not shown) based on a damping control command value F input from the electronic control unit 60 to adjust the generated damping force.
[0019] The sensor state judging system 50 is a system for judging the state of the acceleration sensor. like figure 1 As shown, the sensor state judgment system 50 has: a detection sensor 51 as an acceleration sensor capable of detecting the vibr...
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This sensor state determination system is a sensor state monitoring system capable of accurately determining whether or not a detecting sensor used with a railroad vehicle is in an abnormal state. This system includes: a detecting sensor capable of detecting a physical value acting upon the railroad vehicle; and an electronic control device. A monitoring sensor equivalent to the detection sensor is installed at a position equivalent to the position of the detection sensor. The electronic control device is provided with a determination means (coherence calculation section, state determination section) that computes, based on a first signal detected by the detecting sensor and a second signal detected by the monitoring sensor, a coherence value indicating a correlation between the signals. The electronic control device determines that the detecting sensor is in an abnormal state if the coherence value is smaller than a preset abnormality determination value.
Description
technical field [0001] The present invention relates to a sensor state judging system for judging whether an acceleration sensor or the like used in a railway vehicle is in an abnormal state while the railway vehicle is running. Background technique [0002] In railway vehicles, acceleration sensors and the like are used in a damping control system that actively controls a damper device, a state monitoring system that monitors the state of components or ride comfort, and the like. For example, in a damping control system, an acceleration sensor detects a vibration acceleration acting on a vehicle body, and a control mechanism appropriately determines a damping force generated by a damper device based on the detected vibration acceleration, thereby performing active damping control. [0003] The above-mentioned damping control system is described in, for example, Patent Document 1 below. In the damping control system described in the following Patent Document 1, the control ...
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IPC IPC(8): G01D21/00B61F5/24
CPCG01P21/00G01D3/10B61F5/24G01D3/08
Inventor 难波广一郎冈田信之屉内崇宏三田达也大塚智广后藤友伯中仓康喜德田直树
Owner NIPPON SHARYO LTD