| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic power steering device that can increase a reduction range of a total flow of hydraulic fluid discharged from a plurality of motor pumps.SOLUTION: A first motor pump and a second motor pump have a first motor and a second motor, respectively. The first motor and the second motor are controlled by using an identical motor rotation speed control map. The motor rotation speed control map is provided to calculate a motor rotation speed command value Nbased on a vehicle speed and a steering speed. When motor rotation speed command values Nof the first motor and the second motor are equal to or less than a rotation speed determination threshold Nset based on a predetermined minimum rotation speed, the second motor is made stop. At the same time, the first motor is driven at a rotation speed twice as high as the original motor rotation speed command value N. |
