The current research of master cylinder pressure estimation mainly relies on hydraulic characteristic or vehicle dynamics.But they are not independently applicable to any environment and have their own scope of applic...The current research of master cylinder pressure estimation mainly relies on hydraulic characteristic or vehicle dynamics.But they are not independently applicable to any environment and have their own scope of application.In addition,about the master cylinder pressure control,there are few studies that can simultaneously balance pressure building accuracy,speed,and prevent pressure overshoot and jitter.In this paper,an adaptative fusion method based on electro-hydraulic characteristic and vehicle mode is proposed to estimate the master cylinder pressure.The fusion strategy is mainly based on the prediction performance of two algorithms under different vehicle speeds,pressures,and ABS states.Apart from this,this article also includes real-time prediction of the friction model based on RLS to improve the accuracy of the electro-hydraulic mode.In order to simultaneously balance pressure control accuracy,response speed,and prevent overshoot and jitter,this article proposes an adaptative LQR controller for MC pressure control which uses fuzzy-logic controller to adjust the weights of LQR controller based on target pressure and difference compared with actual pressure.Through mode-in-loop and hardware-in-loop tests in ramp,step and sinusoidal response,the whole estimation and control system is verified based on real hydraulic system and the performance is satisfactory under these scenes.This research proposes an adaptative pressure estimation and control architecture for integrated electro-hydraulic brake system which could eliminate pressure sensors in typical scenarios and ensure the comprehensive performance of pressure control.展开更多
Wolfberry(Lycium barbarum L.)is a medicinal herb with anti-aging and neuroprotective effects.The purpose of this study was to explore the enhanced neuroprotective effects of red wolfberry water extract(RW),and brown w...Wolfberry(Lycium barbarum L.)is a medicinal herb with anti-aging and neuroprotective effects.The purpose of this study was to explore the enhanced neuroprotective effects of red wolfberry water extract(RW),and brown wolfberry water extract(BBW).The reduced percentage of reducing sugar in BBW was shown to be 62.8%,64.3%,39.8%,and 11.6%for glucose,fructose,maltose,and lactose compared to those of RW,as well as free amino acids.And the contents of total phenols and total flavonoids were increased by 62.0%and 51.0%.Melanoidins(1.00%)were first isolated from BBW.RW and BBW increased anti-stress abilities(oxidative stress:24.2%vs.35.7%,and heat stress:17.78%vs.57.57%)while decreasing the reactive oxygen species(ROS)levels in vivo.RW and BBW reduced the rate of paralysis and odor cognitive deficits.At the same time,RW and BBW reduced the number of fluorescent spots of Aβ::GFP.The RW and BBW activated autophagy by upregulating the gene levels(bec-1,lgg-1,lgg-2,unc-51,vps-34,atg-5,atg-18,and sqst-1).Additionally,BBW promoted the nuclear-cytoplasmic ratio of DAF-16::GFP and fluorescence intensity of SOD-3::GFP by 39.4 and 1.16 fold.This study laid a new insight for exploring the Maillard reaction in improving the anti-Alzheimer’s disease(AD)activity of wolfberry.展开更多
基金Supported by National Natural Science Foundation of China(Grant Nos.52202494,52202495)Chongqing Special Project for Technological Innovation and Application Development(Grant No.CSTB2022TIAD-DEX0014).
文摘The current research of master cylinder pressure estimation mainly relies on hydraulic characteristic or vehicle dynamics.But they are not independently applicable to any environment and have their own scope of application.In addition,about the master cylinder pressure control,there are few studies that can simultaneously balance pressure building accuracy,speed,and prevent pressure overshoot and jitter.In this paper,an adaptative fusion method based on electro-hydraulic characteristic and vehicle mode is proposed to estimate the master cylinder pressure.The fusion strategy is mainly based on the prediction performance of two algorithms under different vehicle speeds,pressures,and ABS states.Apart from this,this article also includes real-time prediction of the friction model based on RLS to improve the accuracy of the electro-hydraulic mode.In order to simultaneously balance pressure control accuracy,response speed,and prevent overshoot and jitter,this article proposes an adaptative LQR controller for MC pressure control which uses fuzzy-logic controller to adjust the weights of LQR controller based on target pressure and difference compared with actual pressure.Through mode-in-loop and hardware-in-loop tests in ramp,step and sinusoidal response,the whole estimation and control system is verified based on real hydraulic system and the performance is satisfactory under these scenes.This research proposes an adaptative pressure estimation and control architecture for integrated electro-hydraulic brake system which could eliminate pressure sensors in typical scenarios and ensure the comprehensive performance of pressure control.
基金supported by grants from Tianjin Science and Technology Plan Project(22ZYQYSY00030)Tianjin Municipal Health Technology Project(TJWJ2022XK04)+1 种基金Tianjin Key Medical Discipline(Specialty)Construction Project(TJYXZDXK-062B)Shandong Provincial Natural Science Foundation,China(ZR2023QC145).
文摘Wolfberry(Lycium barbarum L.)is a medicinal herb with anti-aging and neuroprotective effects.The purpose of this study was to explore the enhanced neuroprotective effects of red wolfberry water extract(RW),and brown wolfberry water extract(BBW).The reduced percentage of reducing sugar in BBW was shown to be 62.8%,64.3%,39.8%,and 11.6%for glucose,fructose,maltose,and lactose compared to those of RW,as well as free amino acids.And the contents of total phenols and total flavonoids were increased by 62.0%and 51.0%.Melanoidins(1.00%)were first isolated from BBW.RW and BBW increased anti-stress abilities(oxidative stress:24.2%vs.35.7%,and heat stress:17.78%vs.57.57%)while decreasing the reactive oxygen species(ROS)levels in vivo.RW and BBW reduced the rate of paralysis and odor cognitive deficits.At the same time,RW and BBW reduced the number of fluorescent spots of Aβ::GFP.The RW and BBW activated autophagy by upregulating the gene levels(bec-1,lgg-1,lgg-2,unc-51,vps-34,atg-5,atg-18,and sqst-1).Additionally,BBW promoted the nuclear-cytoplasmic ratio of DAF-16::GFP and fluorescence intensity of SOD-3::GFP by 39.4 and 1.16 fold.This study laid a new insight for exploring the Maillard reaction in improving the anti-Alzheimer’s disease(AD)activity of wolfberry.
