This paper deals with robust design in preliminary design. The proposed robust optimization approach is developed for analytical design models coming from the FEM/RSM or from approximation of physical laws. Moreover, it considers variability on design parameters. Towards a global robust and deterministic optimization we propose to implement a robust analysis method to get the links between vari...

Functionality and design of a bionic robot arm consisting of three joints driven by elastic and compliant actuators derived from biologically inspired principles are presented. In the first design standard springs with linear characteristics are utilized in combination with electrical drives. Different control approaches for the bionic robot arm are presented, discussed and evaluation in numeri...

An Adaptive Control Approach to Satellite Formation Flying With Relative Distance Constraints Jonathan Lawton Randal W. Beard Electrical and Computer Engineering Department Brigham Young University Fred Y. Hadaegh Jet Propulsion Laboratory California Institute of Technology Abstract In this paper we present a spacecraft control for rigid eet rotations. This is done by creating a eet template wh...

In this paper, a Fuzzy Inference System (FIS) is fabricated on a riderless bicycle. The Fuzzy Inference System is based on a rule base inherited from human experience of bicycle riding. The steady turning motion and roll-angle tracking controls for the riderless bicycle were achieved by using fuzzy concept. Collection of sensors, actuator, micro-controller and electrical circuits were employed ...

Hydraulic systems driven by servo valves provide highly accurate control over enormous forces. A servo valve system consists of a transducer, a servo amplifier, a servo valve, and an actuator with a connected load. It is a closed-loop system used for the precise control of the output (load) parameter, such as position, velocity, or force, in response to a command signal. The output is converted...

Improving the characteristics of internal combustion engine an agricultural vehicle is possible by using a hydraulic actuator electronically controlled gas distribution valves. The drive ensures opening valves pistons cylinders when oil pumped into them, are closed valve springs drained from cylinders. advantages are: ability to turn off cylinders, increase in speed and closing mechanism, no ne...

From a safety and security point of view, the electrical energy distribution infrastructure needs to be protected.. In this paper solutions to increase the safety aspects of substation components, power lines and power transformers are discussed. Also security solutions related to perimeter intrusion detection in substations and remote surveillance of power transformer installations are introdu...

Capillary force actuation is a new technology holding particular promise for microelectromechanical systems. Relying upon the ability of electrical fields to alter the capillary pressure in a liquid, this technology permits larger actuation forces and strokes than conventional microactuators. Herein, the physical principles of electrowetting are discussed along with the relationships between ch...

Mathematical models and circuitry necessary for optimal energy conversion have been developed for piezoelectric devices because of their ability to convert mechanical energy to electrical energy. The piezoelectric device that is the focus of this study is a curved, thin unimorph prestressed bender. This device consists of layers of piezoelectric material, polyimide, and metal bonded at high tem...

Magnetic bearings are often designed using magnetic circuit theory. When these bearings are built, however, effects not included in the usual circuit theory formulation have a significant influence on bearing performance. Two significant sources of error in the circuit theory approach are the neglect of leakage and fringing effects and the neglect of eddy current effects. This work formulates a...