![]() Bidirectional transducers (can) convert physical phenomena to electrical signals and also convert electrical signals into physical phenomena. ![]() a printer driver, robot control system), a human, or any other input. The control system can be simple (a fixed mechanical or electrical system), software-based (e.g. An actuator is the mechanism by which a control system acts upon an environment. It is operated by a source of energy, which can be mechanical force, electrical current, hydraulic fluid pressure, or pneumatic pressure, and converts that energy into motion. It is controlled by a signal from a control system or manual control.
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