Many social psychologists believe that characteristics of situations and persons represent two separate and sometimes competing causes of behavior and that situations are the more powerful determinants of behavior. After reviewing some of my previous analyses that explain why the power of situations depends totally upon the characteristics of persons, I will demonstrate further shortcomings of ...

A friction identification method in a frequency domain is proposed for a precision servomechanism. A nonlinear friction model including static, Coulomb, and viscous friction as well as Stribeck effect is considered in this paper. Friction models are formulated by using describing functions. Friction elements are estimated through the limit cycle analysis in a velocity control loop. A Butterwort...

Practical control systems necessarily have pointwise-in-time constraints such as a physical limit on state variables and/or such as an actuator bound on control variables. For such systems, switching control strategy techniques are proposed, but few results about experimental evaluations are done. This paper, therefore, considers a switching control strategy using a maximal output admissible se...

Studies on iterative identification and model based control design have shown the necessity for identifying models on the basis of closed-loop data. Estimating models on the basis of closed-loop data requires special attention due to cross correlation of noise and input signals and the possibility to estimate unstable systems operating under a stabilizing closed-loop controller. This paper prov...

Challenges in designing head positioning servo controller suitable for very high density HDD (above 1 Tbits/in) comes from the issues of external and internal disturbances and to make the controller robust in spite of parametric uncertainty. Servomechanism employing dual-stage actuator can achieve bandwidth required for such high TPI and robust control design has been proposed in the past to ad...

Abstract This study presents a method of computer support for the design hydraulic servo dedicated to aircraft control system. A 3D geometric model was developed, which enabled simulation its kinematics. The paper that enables dynamics mechanisms. servomechanism takes into account movement distributor slider and actuator piston rod under influence forces occurring in servo. As result simulation...