Deflection control of a flexible beam using shape memory alloy actuators

摘要: This paper presents a nonlinear control scheme for deflection of flexible beam system using shape memory alloy (SMA) smart actuators. Due to their interesting properties such as force generation capacity, possibility miniaturization, and power consumption, these devices have been gaining increased popularity in the past few years. However, SMA actuators possess undesirable characteristics nonlinearities, hysteresis, extreme temperature dependences, slow response that make them difficult use precision applications. By taking into account thermal characteristics, is developed order regulate exerted by an actuator attached beam. The based on input–output linearization system. goal desired value. internal dynamics derived it shown this can be stabilized proper choice controller gain matrices.