Samsung Electronics Co., Ltd.

Yong-kwun Lee

Joo-young Kwak

Young Myung Son

Chang-Hyun Roh

A method of controlling vibration of a moving system having driving and driven units includes measuring an acceleration of the driven unit, generating a nominal acceleration by subtracting gravity from the measured acceleration, generating a control driving force according to the nominal acceleration, the driving force having a direction opposite to that of the measured acceleration, and applying the control driving force to the driven unit.

Method and apparatus for controlling vibration using accelerometer

A micro lock valve includes a cylinder forming an air chamber. One part of the cylinder is provided with an inlet port and an outlet port which communicate with each other through the air chamber, and the other part is provided with an exhaust port communicating with the air chamber. The micro lock valve also includes a plunger slidingly traveling in the cylinder, blocking up one of the inlet port or the exhaust port, and formed with a female screw thread in a traveling direction of the plunger. The micro lock valve includes a driving shaft having a male screw thread mating with the female screw thread and a driving motor rotating the driving shaft forwardly and backwardly. Accordingly, the micro lock valve maintains a normally closed state and a normally open state without consuming a large amount of electric power and is driven by low electric power for a long period of time. Further, the micro lock valve needs relatively low electric power to drive a number of the micro lock valves, and decreases noise due to an operation thereof.

Growing community of inventors

Gyeonggi-do, South Korea

Yong-kwun Lee