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Automated Assist

There are times when the strength needed to activate or de-activate a control is outside the capabilities of the user. In this event, other means are used to "assist" or augment human physical strength. Devices for this purpose can be electrical, pneumatic, or hydraulic. Examples are the use of hydraulic assist in operating the rudders and brakes on large aircraft and hydraulic assist in vehicle power steering and brakes. With these controls, appropriate force feedback is essential, so that the user can "sense" the appropriate force to apply.

 Hydraulic Aircraft Controls
Car Brake Testing by DOT
 
 

   

  
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