scholarly journals Transfer functions of solar heating systems with pipes for dynamic analysis and control design

Solar Energy ◽  
2017 ◽  
Vol 150 ◽  
pp. 596-607 ◽  
Author(s):  
Richárd Kicsiny
Author(s):  
Ken Susanto ◽  
Bingen Yang

A piezoelectric forceps actuator (PFA) is recently invented for potential use in minimum invasive and non-invasive surgery and diagnosis, and other biomedical applications. This paper is concerned with structural modeling, dynamic analysis, and feedback control of such an actuator. The PFA is modeled as a composite curved beam with laminated piezoelectric layers. The exact open-loop and closed-loop transfer functions of the PFA control system consisting of the curved beam, sensor, actuator and control logic are obtained in exact and closed form without discretization. With the transfer function formulation, the natural frequencies and frequency response of the actuator are then predicted and a simple feedback control law is implemented. The theoretical model of the actuator is validated in experiments.


2018 ◽  
Vol 115 ◽  
pp. 397-406 ◽  
Author(s):  
Xiao Wu ◽  
Jiong Shen ◽  
Yiguo Li ◽  
Meihong Wang ◽  
Adekola Lawal ◽  
...  

2008 ◽  
Vol 41 (12) ◽  
pp. 1119-1122
Author(s):  
Júlio Inácio Holanda Neto ◽  
Karoline Dantas Brito ◽  
Luís Gonzaga Sales Vasconcelos ◽  
José Jaílson Nic&aacu Alves ◽  
Antonio Carlos Brandão de Araújo ◽  
...  

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