This study constructs a design model for elderly-following monitoring robots based on the Analytic Hierarchy Process(AHP),establishing four evaluation dimensions:functional adaptability,interaction usability,environme...This study constructs a design model for elderly-following monitoring robots based on the Analytic Hierarchy Process(AHP),establishing four evaluation dimensions:functional adaptability,interaction usability,environmental adaptability,and safety reliability.Design priorities were determined through expert scoring and weight analysis,followed by practical optimization of structure and interaction.Results indicated that this approach can effectively enhance the scientific rigor of robot design and improve user satisfaction,providing a feasible solution for the design of intelligent elderly-care products.展开更多
With increasing awareness of environmental protection,the electrical performance and sintering process of lead-free piezoelectric ceramics are continuously optimized to replace lead-based materials.Exploring an approp...With increasing awareness of environmental protection,the electrical performance and sintering process of lead-free piezoelectric ceramics are continuously optimized to replace lead-based materials.Exploring an appropriate doping strategy is believed to achieve concurrent improvements in lead-free piezoelectric ceramics.In this work,SiC was selected to optimize the phase structure,defect configuration,and morphology of(Ba_(0.85)Ca_(0.15))(Zr_(0.1)Ti_(0.9))O_(3)(BCTZ)lead-free piezoelectric ceramics.On the one hand,SiC could promote the sintering process and grain growth due to its excellent thermal conductivity,resulting in the compactness and outstanding insulation of the doped ceramics.On the other hand,the incorporation of Si4+in the B-site of the ABO_(3) lattice not only deforms the crystal structure and enhances the lattice distortion but also reduces the oxygen vacancy concentration and increases the charge carrier activation energy.As a result,excellent comprehensive piezoelectric responses of piezoelectric coefficient(d_(33))=638 pC/N,inverse piezoelectric coefficient(d_(33)*)=1048 pm/V,planar electromechanical coupling coefficient(k_(p))=58.21%,and Curie temperature(Tc)of~95℃ were achieved with the optimized composition.Our work demonstrated that SiC-doped BCTZ-based ceramics are potential candidates for replacing lead-based piezoceramics.展开更多
文摘This study constructs a design model for elderly-following monitoring robots based on the Analytic Hierarchy Process(AHP),establishing four evaluation dimensions:functional adaptability,interaction usability,environmental adaptability,and safety reliability.Design priorities were determined through expert scoring and weight analysis,followed by practical optimization of structure and interaction.Results indicated that this approach can effectively enhance the scientific rigor of robot design and improve user satisfaction,providing a feasible solution for the design of intelligent elderly-care products.
基金supported by the Taishan Scholars Program(No.tsqn202312214)the Natural Science Foundation of Shandong Province(No.ZR2024QE104)+1 种基金the Shandong Province Key Fundamental Research Program(No.ZR2022ZD39)the Open Foundation of Guangdong Provincial Key Laboratory of Electronic Functional Materials and Devices(No.EFMD2024005Z).
文摘With increasing awareness of environmental protection,the electrical performance and sintering process of lead-free piezoelectric ceramics are continuously optimized to replace lead-based materials.Exploring an appropriate doping strategy is believed to achieve concurrent improvements in lead-free piezoelectric ceramics.In this work,SiC was selected to optimize the phase structure,defect configuration,and morphology of(Ba_(0.85)Ca_(0.15))(Zr_(0.1)Ti_(0.9))O_(3)(BCTZ)lead-free piezoelectric ceramics.On the one hand,SiC could promote the sintering process and grain growth due to its excellent thermal conductivity,resulting in the compactness and outstanding insulation of the doped ceramics.On the other hand,the incorporation of Si4+in the B-site of the ABO_(3) lattice not only deforms the crystal structure and enhances the lattice distortion but also reduces the oxygen vacancy concentration and increases the charge carrier activation energy.As a result,excellent comprehensive piezoelectric responses of piezoelectric coefficient(d_(33))=638 pC/N,inverse piezoelectric coefficient(d_(33)*)=1048 pm/V,planar electromechanical coupling coefficient(k_(p))=58.21%,and Curie temperature(Tc)of~95℃ were achieved with the optimized composition.Our work demonstrated that SiC-doped BCTZ-based ceramics are potential candidates for replacing lead-based piezoceramics.
