Any aviation buff is well aware of the Wright Brothers’ role in the history of flight. But it’s likely that many can’t identify the Wright’s seminal contribution: aerodynamic control. When their plane ...

The actuation of cams, detents, and levers has long been the forte of pneumatic or hydraulic systems in machines. These systems are generally open loop. The only verification that the system has ...

A single power plant uses hundreds of valves to control almost every aspect of its operation. Valves, in conjunction with a controlling actuator, are used for pollution control, feed water, cooling ...