| 摘要 |
PURPOSE:To improve the efficiency by converting the energy obtained by multiplying the amount and pressure of oil produced by a pump with each other into an output by a total amount actuator. CONSTITUTION:An adder 2 inputs the signal from a controller 1, an electric rotation controller 3 inputs the signal from the adder 2 and controls an electric motor 4, and the two-directional liquid pressure pump 5 is rotated by a rotary driving source 4. Further, the actuator 6 is driven with the liquid flow from a liquid flow switching valve or the two-directional liquid pressure pump 5. Then a position sensor such as a rotational angle sensor or displacement sensor is provided to the actuator 6 and its position signal is fed back to the controller 1 or adder 2. Lastly, a rotation sensor 8 senses the rotational state of the electric motor 4 or liquid pressure pump 5 and its output is fed back to the controller 1 or adder 2. Consequently, the energy efficiency is improved. |
