SMA Actuator with Active Clamp

Modeling of a new SMA micro-actuator for active endoscopy applications

Shape Memory Alloys (SMA) are good candidates to actuate endoscope heads but the cooling problem must be solved particularly in confined situations. For these reasons, a new SMA microactuator specially designed for active endoscopy applications has been developed in our laboratory. This work is a new step in the approach of using integrated thermoelectric cooling with SMA actuators. In fact, th...

Preisach Model Identification of a Two-Wire SMA Actuator

In recent years, the Preisach hysteresis model has emerged as the model of choice for the behaviour of many smart materials, such as shape memory alloys (SMA). This research treats the identiication of Preisach models for a diierential SMA actuator. The traditional identiication technique is applied, and several models are derived for the actuator. It is seen that the classical Preisach model i...

Preisach Model Identiication of a Two-wire Sma Actuator

In recent years, the Preisach hysteresis model has emerged as the model of choice for the behaviour of many smart materials, such as shape memory alloys (SMA). This research treats the identi cation of Preisach models for a di erential SMA actuator. The traditional identi cation technique is applied, and several models are derived for the actuator. It is seen that the classical Preisach model i...

Active Clamp Zvs Flyback Converter with Output Voltage Douler

Distributed Backstepping Control With Actuator Delay For Active Suspension System

The actuator time delay problem for a linear active suspension system using the theory of backstepping control design is examined in this study. Time-delay may arise in active suspension systems because of transport phenomenons, information processing, sensors or some mechanical reasons. Designing the controller without taking into account the actuator time delay may degrade the performance of ...