Abstract:
A first required flow rate is calculated as a function of a first maximum allowable flow rate and a value of a first signal. A second required flow rate is calculated as a function of a value of the second signal. When the first maximum allowable flow rate is higher than a first capacity, the value of the first signal is a maximum level, and the value of the second signal is equal to or higher than a minimum level and equal to or lower than a maximum level, a first working fluid supply is controlled to discharge working fluid at a flow rate equal to the first capacity, and a second working fluid supply is controlled to discharge working fluid at a flow rate obtained by deducting the first capacity from the first maximum allowable flow rate, added to the second required flow rate.
Abstract:
A walk assistance system is disclosed. The walk assistance system includes an operation unit comprising a support to support a user's arms, a driving unit comprising a plurality of wheels and a plurality of driving unit frames configured to connect the plurality of the wheels with each other, an ascending/descending unit comprising a plurality of support connecting frames configured to connect the support with the driving unit frames, and a chair connected with the support and the driving unit frames, to sit the user thereon, wherein the height of the support is adjusted by adjusting the lengths of the support connecting frames. The walk assistance system according to the embodiment may support the user's sitting and standing safely and efficiently. Also it may provide the same function as the conventional walker and also provide the function of moving via a simple operation, even with the user's sitting thereon.
Abstract:
The present invention relates to an air conditioner for vehicles having a two layer air flow structure, which uses one temp door adjusting temperature and serving as a partition wall for the two-layer air flow structure, thereby reducing manufacturing costs since its structure and operation method are simple, providing easiness in adjusting temperature, and improving sealing efficiency between an air conditioning case and the temp door.