A 36-year-old man presented to our emergency department complaining of right-sided chest pain after a motor vehicle collision. Physical examination revealed bilateral breath sounds and a supine chest radiograph was unremarkable. A 10-5 MHz linear transducer (SonoSite MicroMaxx, Bothell, WA, USA) was used to obtain ultrasound images at the patient’s left anterior chest wall [Figure 1], right ant...

The objective of this work is to design and implement a closed loop system for induction motor starting at rated current. Thyristorized AC voltage regulator is used as the starting equipment and motor current regulation is carried out using an optimally tuned Proportional-Integral (PI) controller. Since, AC voltage controller fed starting of induction motor is a non-linear process, identificati...

This paper presents linear estimation techniques used to identify the stator resistance, the stator leakage inductance (transient inductance), the stator self inductance and rotor time constant of an induction motor with measuring its speed. Such estimation is important in the determination of the achieve performance for induction motor drives. The discrete-time parameter estimation models expr...