In the process of laying urban pipeline networks, it is necessary to cut the pipes, and the residual stress of the cut pipes is released, resulting in an increase in the ovality of the cut section. Therefore, roundnes...
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This paper introduces the design of the remote control for a novel patient transfer apparatus. First, the overall design of the control system is put forward based on the working principle, and design requirements of ...
This paper introduces the design of the remote control for a novel patient transfer apparatus. First, the overall design of the control system is put forward based on the working principle, and design requirements of the apparatus. Second, voltage regulator circuit of the remote control based on the MC34063 is designed to fit for the OLED displayer, parameters such as the filter capacitor have been determined. Next, wireless communication unit adopted CC1110 and the communication instruction code is introduced. Then, the interaction interface of the remote control is finished to facilitate the implementation of the adjustment functions. finally, a simulation and a real experiment has been completed, it indicates the correctness of the voltage regulator circuit and the effectiveness of the remote control respectively.
This paper constructs a man-machine integrated no-load static model considering the self-balancing of the mechanism, obtains the mapping relationship among joint variable, no-load torque, measured torque and end-force...
This paper constructs a man-machine integrated no-load static model considering the self-balancing of the mechanism, obtains the mapping relationship among joint variable, no-load torque, measured torque and end-force of the patient. According to the damping control strategy, the end force and speed mapping function planning is completed. The joint angular velocities based on the kinematic inverse solution are calculated, which are important parameter of man-machine coupling motion.
Rolling deformation results in the transformation of a lath martensite structure to a lamellar structure characteristic to that of IF steel cold-rolled to medium and high strains. The structural transition takes place...
Rolling deformation results in the transformation of a lath martensite structure to a lamellar structure characteristic to that of IF steel cold-rolled to medium and high strains. The structural transition takes place from low to medium strain, and electron backscatter diffraction analysis shows that the frequency of medium angle boundaries with misorientation angles of 5-10° decreases with increasing strain, while the frequencies of boundaries with angles in the ranges of 1-5° and 10-25° increase, resulting in the evolution of a bimodal misorientation angle distribution. The microstructural evolution and the strength are characterized for lath martensite rolled to a thickness reduction of 30%, showing that large changes in the misorientation take place, while the strain hardening rate is low.
This paper proposes a new hybrid (parallel–serial) 6-DOF lower limb rehabilitation robot including two mechanical legs and an adjustable seat, which could train in sitting, lying and standing three postures. Each mec...
This paper proposes a new hybrid (parallel–serial) 6-DOF lower limb rehabilitation robot including two mechanical legs and an adjustable seat, which could train in sitting, lying and standing three postures. Each mechanical leg consists of hip joint, knee joint and ankle joint. The dynamics and DOF of the robot are analysed, and the result is verified by the software ADAMS. The result lay the foundation for prototype build in future.
This paper aims to solve the problem that most rehabilitation robots lack to integrate their physiological functions and psychological states into closed controlling loop in rehabilitation training of stroke patients....
This paper aims to solve the problem that most rehabilitation robots lack to integrate their physiological functions and psychological states into closed controlling loop in rehabilitation training of stroke patients. The application of fusion technology of multi-electromechanical sensor signal and DSmT signal is used to achieve patients' comfort judgement. Mean value and variance are used to extract physiological information such as heart rate, temperature and skin resistance. Sensor information of fusion technology of rehabilitation robot based on classical DSmT theory can realize on-line diagnosis of multi-comfort degree of patients' coupling.
The macro-scale and meso-scale simulation models of stainless steel clad plate were established by DEFORM-3D. The multi-scale coupling simulations of clad plate with different rolling parameters were carried out. The ...
The macro-scale and meso-scale simulation models of stainless steel clad plate were established by DEFORM-3D. The multi-scale coupling simulations of clad plate with different rolling parameters were carried out. The seven pass hot rolling process of stainless steel clad plate was simulated by numerical simulation. By contrasting the vertical stress and the deformation resistance of cladding layer, the rolling reduction rate satisfying interface bonding was obtained. The grain distribution at the center of the substrate layer was analyzed and reasonable hot rolling reduction rates were selected considering their effects on the recrystallization volume percent and the grain size. The results show that the grain size decreases with the increase of reduction rate. However, too much reduction rate will decrease the rate of recrystallization volume percent and the refining effect of grain is not obvious. To ensure uniform grain size distribution, it is most reasonable to set the rolling temperature to 1150°C and the reduction rate to 50%.
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