Synchronization Control Simulation for Pneumatic Elevator Based on AMESim
For the research of simulation of synchronization control for pneumatic elevator, a model is builtin AMESim software. The simulations are used to research the impact of synchronous control strategy. The simulation results show that there are good synchronizing effects by applying pneumatic proportional technology and synchronization control with master-slave mode based on PID control. Some theoretical guidance is provided for synchronization control of real system.
Smart components-based servo pneumatic actuation systems
Abstract Pneumatic drives are the most widely used form of industrial actuation system. However, research in relevant areas is very limited, often carried out, if at all, in isolated environments. There is a lack of strategic thinking and tools, which can enable developments to go forward in an efficient manner. In recognising the advancements in PC-technology, fieldbus systems, microprocessors and computing technologies, the authors advocate the concept of smart components-based servo pneumatic actuation systems. The paper expands on the components-based nature of pneumatic drive systems to identify design templates for smart valves, smart sensors, smart actuators, etc. The development of components-based pneumatic drive systems is considered in the context of a recently completed UK EPSRC funded research project on high speed servo-pneumatic actuation, addressing issues such as simulation tools, algorithm development, sizing, tuning, installation and commissioning. A high speed pneumatically-driven gantry pick-and-place handling system with novel design features is presented to demonstrate the capability and attributes of pneumatic drives for more sophisticated applications.
Research on health and oral health status of elderly living alone compared to elderly living with their families - based on the data (2014) from the 6th two-year Korea national health and nutrition examination survey -
Objectives: I examined the health and oral health status of elderly people living alone compared to elderly people living with their families by using data (2014) from the 6th Two-Year Korea National Health and Nutrition Examination Survey. Methods: Among 1,454 health survey respondents aged 65 years and over who participated in the 6th Two-Year Korea National Health and Nutrition Examination Survey conducted in 2014, 311 were elderly people living alone and 1,143 were elderly people living with their families. Results: In terms of socio-demographic characteristics, the percentage of elderly people living alone was high especially in women and when the subjects’ age, education level, and income level were low. In terms of oral health status, the percentage of elderly people living alone was high when elderly people thought that their subjectively viewed health was poor and the frequency of drinking and exercise was low. In terms of oral health status, the percentage of elderly people living alone was high among elderly people who did not have good oral health in their subjective view and did not get oral examinations for a year and had a lot of difficulty chewing. Conclusions: Family support or additional social support for elderly people who live alone should be considered to promote the healthy lives of elderly people.