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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); and high-speed stiffness modulation (∼3000 N·m/rad/s). Such features can help boost the safety and performance of many advanced robotic systems, e.g., a cobot that physically interacts with unstructured environments and an exoskeleton that provides physical assistance to human users. These features can also enable us to utilize variable stiffness property to attain various regulation and traje ....
New Delhi [India], February 7 (ANI/SRV): The announcement of the revised tax slabs, presented in the Union Budget 2023 by the Finance Minister, Nirmala Sitaraman on the 1st of February came with a New Scheme under which there will be no payable income tax for those under 7LPA of personal income. Earlier the tax rebate ceiling was 5 LPA under the two concurrent taxation schemes, while now those who opt for the New Scheme will enjoy an additional roof of 2 lakhs. This new development indicates an increase in discretionary income, which in turn is expected to boost the commercial scene in the country due to the fact that the bottom end of the economy has more capital to dispense. With the rise in discretionary income coupled with a host of growth-inducing measures, the Union Budget 2023, has been deemed by several experts as an overall positive, growth-oriented budget. The new budget has put much emphasis on capital expenditure, infrastructure development, and the expansion, nurturing, an ....
With the help of a recent grant from the National Science Foundation, Central Virginia Community College looks to continue helping local companies meet a growing demand for technicians who have ....