They developed a hydraulic actuator controlled by a fast acting servovalve
. The system is shown in Figure 2.
Kvistgaard, Denmark, September 08, 2016 --(PR.com)-- Promising piezoelectric servovalve
Wang, "Development of a four-nozzle flapper servovalve
driven by a giant magnetostrictive actuator," Journal of Systems and Control Engineering, vol.
Li, "Development of a deflector-jet electrohydraulic servovalve
using a giant magnetostrictive material," Smart Materials and Structures, vol.
Standard features: Closed-loop, digital servovalve
control, Triplemelt screw.
Pneumatic cylinder controlled by servovalve
(A2v) also shows an acceptable deviation from the normal for angle, torque, and power.
Linearized Electrohydraulic Servovalve
Model for Valve Dynamics Sensitivity Analysis and Control System Design, Journal of Dynamic Systems, Measurement and Control, Volume 122, Issue 1, 179 (9 pages)
Considering economy problems, all the joints in the biped lower limb are actuated by identical linear hydraulic servocylinder (shown as Figure 2), which is composed of a hydraulic cylinder, a hydraulic servovalve
, a linear displacement sensor and a force sensor.
Benitez et al., "Development of a low-pressure fluidic servovalve
for wearable haptic interfaces and lightweight robotic systems," in Informatics in Control, Automation and Robotics, J.
* Formula 1 Teams; Dual gain micro servovalve
to provide total precision from high power clutch, gearshift and throttle actuation systems.
To positioning control of pneumatic servo-drive a fuzzy logic controller (FLC) of PD type with two inputs e(t) (position error), [DELTA]e(t) (change of position error) and one output u(t) (voltage in the coil servovalve