FUZZY CONTROL OF A SEISMIC SHAKE TABLE USING A VISION-BASED DISPLACEMENT MEASUREMENT SYSTEM

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SAYAHI SIROUS; HAMIDIZADEH MAHMOOD; MORADZADE HASSAN; SOLEYMANI MAHDI; RAHMANI MOHSEN

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Journal: Modares Mechanical Engineering Year:2015 | Volume:14 | Issue:14 Page(s): 117-124

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Title

FUZZY CONTROL OF A SEISMIC SHAKE TABLE USING A VISION-BASED DISPLACEMENT MEASUREMENT SYSTEM

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Keywords

FUZZYQ2

PI SUPERVISORY CONTROLQ1

SHAKE TABLEQ2

IMAGE PROCESSINGQ2

DISPLACEMENT MEASUREMENTQ2

Abstract

Control of seismic SHAKE TABLE in order to track the predefined earthquake profile is a key concern in design of seismic SHAKE TABLEs. This paper proposes a vision-based real time DISPLACEMENT MEASUREMENT system using IMAGE PROCESSING techniques to control a laboratory-scale seismic SHAKE TABLE. The SHAKE TABLE is controlled via a FUZZY-supervisory controller, an inner PID loop and a FUZZY outer one, whose feedback is provided by the vision-based measurement system. To minimize tracking errors, the FUZZY controller uses displacement and acceleration responses as its feedbacks. For this purpose, a camera and an IMAGE PROCESSING application are utilized to measure the motions directly in real time. Results are sent to a host PC through a network as the controller feedback. Proposed system performance is compared with an alternative system which utilizes a linear encoder as displacement sensor and controller feedback. Test results prove effectiveness of the proposed FUZZY system in cutting back the tracking errors. In addition, the vision-based system uses a very low cost camera to measure the displacement directly. It has appropriate accuracy, works in real time, and doesn't need any contact with the table, comparing to the encoder version.

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APA: Copy

SAYAHI, SIROUS, HAMIDIZADEH, MAHMOOD, MORADZADE, HASSAN, SOLEYMANI, MAHDI, & RAHMANI, MOHSEN. (2015). FUZZY CONTROL OF A SEISMIC SHAKE TABLE USING A VISION-BASED DISPLACEMENT MEASUREMENT SYSTEM. MODARES MECHANICAL ENGINEERING, 14(14), 117-124. SID. https://sid.ir/paper/178744/en

Vancouver: Copy

SAYAHI SIROUS, HAMIDIZADEH MAHMOOD, MORADZADE HASSAN, SOLEYMANI MAHDI, RAHMANI MOHSEN. FUZZY CONTROL OF A SEISMIC SHAKE TABLE USING A VISION-BASED DISPLACEMENT MEASUREMENT SYSTEM. MODARES MECHANICAL ENGINEERING[Internet]. 2015;14(14):117-124. Available from: https://sid.ir/paper/178744/en

IEEE: Copy

SIROUS SAYAHI, MAHMOOD HAMIDIZADEH, HASSAN MORADZADE, MAHDI SOLEYMANI, and MOHSEN RAHMANI, “FUZZY CONTROL OF A SEISMIC SHAKE TABLE USING A VISION-BASED DISPLACEMENT MEASUREMENT SYSTEM,” MODARES MECHANICAL ENGINEERING, vol. 14, no. 14, pp. 117–124, 2015, [Online]. Available: https://sid.ir/paper/178744/en

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