The procedure and the external fixator for lengthening long bones was developed by G. A. Ilizarov in the late 1960's. This technique has, despite its proven abilities for leg lengthening and correction of angular deformities, some considerable disadvantages for the patients. Discomfort, infections and restricted weight bearing are some reasons for the development of a completely intramedullary ...

Electrical on demand supercharging provides an internal combustion engine with the facility to increase its volumetric efficiency without being subject to the mechanical constraints associated with a conventional pressure charging device. This enables improvement in fuel economy through engine downsizing with the added ability to enhance torque. The Visteon Torque Enhancement System (VTES) is a...

Series elastic actuators have a spring intentionally placed at the actuator output. Measuring the spring strain gives an accurate measurement for closed-loop actuator force control. The low spring stiffness allows for high control gain while maintaining actuator stability. This gives series elastic actuators many desirable properties including high bandwidth at moderate force amplitudes, low ou...

transistors with ZrO2 gate dielectrics Kuniharu Takei, Rehan Kapadia, Hui Fang, E. Plis, Sanjay Krishna, and Ali Javey Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720, USA Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA Berkeley Sensor and Actuator Center, University of California, Berkeley, C...

|Glaucoma is an eye disease which is caused by abnormal high IOP (Intra Ocular Pressure) in the eye. The use of implants is increasing in these days in order to treat the glaucoma. However, though conventional implants have a capability of pressure regulation, they cannot maintain IOPs desired for di erent patients. To solve these problems, it is needed to develop a new implant which is capable...

In this work, an active vibration control system is presented that reduces the transmission of engine induced vibrations to the chassis of a vehicle. In order to find system configurations which provide minimum energy consumption, six different configurations of actuator placement with two different actuator types are presented and analyzed regarding their power demands. Models for the test set...

An adaptive nonlinear control law that incorporates the manipulator dynamics as well as dynamics of the actuator is developed in this article. The technique is based on nonlinear feedback linearization. The electrical parameters of the actuator are considered to be of uncertain values. In contrast to known methods the robot position is the only measurement available, a nonlinear observer is des...