In order to implement power-by-wire, high-performance electrically powered actuators will be required. The paper discusses the design details, and the simulation of an electrohydrostatic actuator suitable for use in primary flight control systems of a civil aircraft. The paper presents experimental ...
actuator housing. These typically will require several turns to fully open or fully close the actuator depending on size and design. The larger more powerful actuators will require more force or torque to move so the manual system will typically be geared down requiring more turns for reduced ...
In the conventional cascade control structure of aerospace electrically powered actuators, the current (or electromagnetic torque) loop plays a critical role in realizing a rapid response for a digitally controlled BrushLess Direct Current (BLDC) motor. Hysteresis Current Control (HCC) is an effective ...
This design has two main advantages over conventional solenoid valves. First, for holding the spool of the switching valve in either position no power is needed due to its bistable nature. Second, using a piezo stack can greatly reduce size and mass of the actuator. This is not obvious when...
Redundancy Design of a New Electrically Powered Actuator for Aerospace Application switching valve block systemElectro-Mechanical-Hydrostatic Actuator (EMHA) is a new type of electrically powered actuator that acts on thrust vector control ... J Zhi,B Qiu,X Qi,... - IEEE International Conference ...
An electrically powered and controlled tractor system includes one or more electric gripper assemblies and one or more electric power train assemblies. Power and control signals for
1. A vehicle brake having an electrically powered actuator for moving a friction means into contact with a vehicle wheel, the brake having means for adjustment of the brake to compensate for wear of the friction means, the brake including: ...
This disclosure pertains to a completely digital, electrically powered servo wherein the servo actuator is minutely incremented at a frequency proportional to the magnitude of an error binary number.
A household appliance comprises a cabinet, a door and a door block/release device. In normal conditions, the device is actuated by electrically powered actuator means whilst in case
1. In a cordless portable electrically-powered tool, means defining a housing having a battery pack receiving recess, means defining the base of said recess comprising an elongated plate for receiving said pack during insertion in and removal from said recess, laterally spaced parallel linear opening...