| 摘要 |
PROBLEM TO BE SOLVED: To provide a wheel bearing with sensors, capable of highly accurately detecting a load acting on the wheel bearing and the ground contact surface of a tire by correcting a detection error due to the temperature difference between the inside and outside of the bearing and in which the sensors are easy to assemble. SOLUTION: Rollers 5 are interposed between opposing double-row rolling faces 3, 4 of an outer member 1 and an inner member 2. Of the outer member 1 and the inner member 2, one or more sensor units 20 are provided to a fixed side member. The sensor units 20 includes: a strain generation member 21 fixed in contact with the outer diameter surface of the fixed side member; strain sensors 22, which detect the strain; sensor-part-temperature sensors 28, which detect the temperatures of the sensor installation parts; and rolling-face-temperature sensors 29, which detect the temperatures near the rolling face 3 of the fixed side member. An estimation means 30 is provided which corrects the output signals of the strain sensors 22 with the outputs of the sensor-part-temperature sensors 28 and the rolling-face-temperature sensors 29 and estimates a load that acts on the wheels from the corrected signal. COPYRIGHT: (C)2011,JPO&INPIT
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