The study of smart sensors and actuators led, during the past few years, to the development of facilities which improve traditional sensors and actuators in a necessary way to automate production systems. In an other context, many studies are carried out aiming at defining a decisional structure for production activity control and the increasing need of reactivity leads to the autonomization of...

To achieve frequency separation between actuators of a dual-stage servo actuator system in a hard disk drive, the PQ control design method can be used. In the PQ method, the servo controller is designed by focusing on structural interference of the actuators. This paper provides a specific parametrization for fixed order feedback controllers used in the PQ-method for which the structural interf...

Principles of moving mass control the orbital parameters an artificial dumbbell shaped satellite are discussed in present paper. The rationale is to implement a non-jet principle actuation by varying geometry through its internal degrees-of-freedom. This can be achieved spinning massive parts and changing their relative distance upon angle according suggested strategies. schemes aim at maintain...

In the last decades, digital hydraulics has emerged as a new alternative for development of more efficient hydraulic systems, where effects throttling losses and internal leakages are minimized through use conventional components associated in parallel or switching hydraulics. aviation industry, systems commonly applied to control highly relevant such landing gear flight surfaces. this context,...

2 Abstract Pneumatic actuators have several advantages such as light weight, safety, low cost and high compliance. However, many pneumatic actuators have complicated systems that include a compressor, air tubes, and pneumatic valves with electrical wires. This research proposes a new control method for a multiplex pneumatic transmission constructed with special resonant valves and air tubes wit...