Abstract
Shape memory alloys (SMAs) provide compact and simple actuation for a variety of systems. Automotive applications of these materials, although very attractive, have not been fully explored. This is partly due to the complex behavior of the alloys. A two degree of freedom SMA actuator has been developed to orient the position of a rear-view-mirror. This paper presents dynamic simulations of the SMA actuator. The strong interdependence of the thermomechanical behavior of the alloy and the dynamics are considered to greater improve the accuracy of the true system. The modeling of the nonlinear friction behavior is also of great importance to the general dynamics of the actuator and eventually the control system.