Title :
Capacitance-based sensor design and application in automatic system
Author :
Li, Nan ; Guo, Baolong ; Wang, Pai ; Huang, Chuan
Author_Institution :
Inst. of Intell. Control & Image Eng., Xidian Univ., Xi´´an, China
Abstract :
A capacitance-based sensor is presented to be a detector for particular automatic system in this paper. Firstly, sensing principle of the designed sensor is introduced. Then, three types of capacitance sensor in different shapes are designed and compared. the parameters affecting the sensor performance and sensitivities are discussed. Thirdly, the electric distribution and the fringe capacitance of sensors are simulated by software, and then the optimum excitation frequency of designed sensor is determined by analysis of practical measurements. At the last, the error of system is considered and analyzed. The experimental results show the feasibility of the designed capacitance sensors used for particular automatic systems.
Keywords :
capacitive sensors; control system synthesis; error analysis; automatic system; capacitance based sensor design; electric distribution; optimum excitation frequency; sensors fringe capacitance; system error analysis; Analytical models; Capacitance measurement; Capacitive sensors; Detectors; Electric variables measurement; Frequency measurement; Sensor systems; Sensor systems and applications; Shape; Software measurement;
Conference_Titel :
Control and Automation, 2009. ICCA 2009. IEEE International Conference on
Conference_Location :
Christchurch
Print_ISBN :
978-1-4244-4706-0
Electronic_ISBN :
978-1-4244-4707-7
DOI :
10.1109/ICCA.2009.5410550
