| 摘要 |
A vehicular brake hydraulic pressure controller has a reference hydraulic pressure acquisition section 21 a for acquiring hydraulic pressure achieved on the other side of an electromagnetic valve as reference hydraulic pressure, a differential pressure calculation section 21 b for calculating a differential pressure Py by subtracting previously-estimated hydraulic pressure achieved on one side of the electromagnetic valve from the reference hydraulic pressure; a pressure gradient coefficient calculation section 21 c for acquiring a pressure gradient coefficient K correlating with a drive current of the electromagnetic valve and the differential pressure Py, and an estimated hydraulic pressure calculation section 21 e for estimating current hydraulic pressure by adding a product, which has been produced by multiplying the differential pressure Py by the pressure gradient coefficient K, to the previously-estimated hydraulic pressure achieved on one side of the electromagnetic valve.
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