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JAMESTOWN, N.Y. — SUNY Jamestown Community College (JCC) enhanced course offerings starting this spring semester by adding seven HyFlex courses to its catalog.

This article expounds the design and control of a new variable stiffness series elastic actuator (VSSEA). It is established by employing a modular mechanical design approach that allows us to effectively optimize the stiffness modulation characteristics and power density of the actuator. The proposed VSSEA possesses the following features: no limitation in the work range of output link; a wide range of stiffness modulation (∼20 N·m/rad to ∼1 KN·m/rad); low-energy-cost stiffness modulation at equilibrium and nonequilibrium positions; compact design and high torque density (∼36 N·m/kg);...

Wire and arc additive manufacturing(WAAM) is a promising method for directly manufacturing parts with complex shapes. However, the accuracy of the existing welding parameter planning methods would dramatically decrease when bead geometry changes dynamically due to the long-term dependence, strong coupling, and hysteresis properties of the WAAM process. To this end, a non-autoregressive(NAR) dynamic model is proposed to predict the bead geometry, and an adaptive model predictive control(aMPC) method is proposed to plan welding parameters to achieve high manufacturing accuracy. First, in the pro...

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The Keweenaw Research Center (KRC) is a multidisciplinary research center of Michigan Technological University that is active across a broad spectrum of vehicle development. Originally established by the US Army for deep snow mobility testing, KRC has been involved in military, industrial, and commercial vehicle applications for over 60 years.