CONTINUOUS PROXIMATE TIME-OPTIMAL CONTROL FOR A THIRD ORDER SERVOMECHANISM HAVING A PLAN7 WITH THREE REAL ROOTS

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" CONTINUOUS PROXIMATE TIME-OPTIMAL CONTROL FOR A THIRD ORDER SERVOMECHANISM HAVING A PLAN7 WITH THREE REAL ROOTS "

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	149114
Doc. No	:	ET20906
Main Entry	:	MOHAMMAD SAMER CHARIFA
Title Proper	:	CONTINUOUS PROXIMATE TIME-OPTIMAL CONTROL FOR A THIRD ORDER SERVOMECHANISM HAVING A PLAN7 WITH THREE REAL ROOTS
Note	:	This document is digital این مدرک بصورت الکترونیکی می باشد
Abstract	:	A servomechanism is a system that controls the position or velocity of a mechanicaldevise. In many applications, such as disk-drive head positioning and pick-and-place robots, itis desirable to have servomechanisms effect a minimum time response. Since there is a limiton the magnitude of the control signal in every control system, this leads to time-optimalcontrollers that are bang-bang. Truly bang-bang time-optimal control systems are notpractical, due to the poor overall behavior such as the instantaneous switching and the limitcycles about the target state. In order to eliminate such undesirable behavior, we applyContinuous Proximate Time-Optimal (CPTO) controller to a third order servomechanismhaving three real roots, which represents our modeling of the hard disk drive servomechanism.We have shown that the CPTO controller gives near time-optimal response for large states,and provides smooth and stable response with near linear control for small states.To overcome the mathematical difficulties of solving the time-optimal control problemof the model of the plant, new approach based on similarity transformation has been used.A saturated linear state-feedback controller has been designed for comparison andassessment.It has been shown through the simulation results that response times are indeed neartime-optimal. Moreover,.
Subject	:	Electericl tess
	:	برق
electronic file name	:	TL44052.pdf
Title and statement of responsibility and	:	CONTINUOUS PROXIMATE TIME-OPTIMAL CONTROL FOR A THIRD ORDER SERVOMECHANISM HAVING A PLAN7 WITH THREE REAL ROOTS [Thesis]