La Vie en rose. La Vie en rose (French pronunciation: â) was the signature song of popular French singer Ãdith Piaf, written in 1945, popularized in 1946, and released as a single in 1947. The song became very popular in the USA in 1950 with no fewer than seven different versions reaching the Billboard charts.
An actuator is a type of motor that is responsible for moving or controlling a mechanism or system. It is operated by a source of energy, typically electric current, hydraulic fluid pressure, or pneumatic pressure, and converts that energy into motion.
A linear actuator is simply a DC motor that has been geared in such a way that it extends and retracts an arm instead of spinning a shaft. Depending on the power of the motor and the reduction ratios of the gearbox, linear actuators range from slow (0.5 inches/sec) to very fast (9 inches/s).