A novel closed-loop system to administer propofolcomparison with manual control

A new closed-loop control system for isoflurane using bispectral index outperforms manual control.

BACKGROUND Automatic control of depth of hypnosis using the Bispectral Index (BIS) can help to reduce phases of inadequate control. Automated BIS control with propofol or isoflurane administration via an infusion system has recently been described, a comparable study with isoflurane administration via a vaporizer had not been conducted yet. Our hypothesis was that our new model based closed-loo...

Helicopter Control : a Multi - Loop Manual Control System

The human operator's performance in a high order, multiloop task, typified by the helicopter, is studied using the method of average responses. This method permits a time domain, transient input analysis. A cascade model configuration for the human operator is proposed. In this configuration, the first human operator model controls attitude. This model is identical to that of the single-loop mo...

Motor / Tachometer Closed - Loop Speed Control System

A Closed Loop Feedback Method for a Manual Bar Straightener

Automation of a unique manually controlled industrial bar straightener is proposed. A continuous-time closed loop model is constructed in Simulink for an event-driven process through the use of asynchronous timers. The system is simulated with linear and nonlinear PD controllers. A nonlinear filter, called the tracking differentiator, is introduced as an alternative to a linear approximate mean...

A Closed-Loop Adaptive System for Command and Control

On Navy ships, technological developments enable crews to work more efficiently and effectively. However, in such complex, autonomous, and information-rich environments a competition for the users’ attention is going on between different information items, possibly leading to a cognitive overload. This overload originates in the limitations of human attention and constitutes a well-known and we...