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Improve Roll Dynamic Response of Road Vehicle to Step Steer Input using Semi-active PID Suspension Controller

International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Year of Publication: 2017
Karim H. Ali, Farah Ayad A. Majeed

Karim H Ali and Farah Ayad A Majeed. Improve Roll Dynamic Response of Road Vehicle to Step Steer Input using Semi-active PID Suspension Controller. International Journal of Computer Applications 161(12):8-14, March 2017. BibTeX

	author = {Karim H. Ali and Farah Ayad A. Majeed},
	title = {Improve Roll Dynamic Response of Road Vehicle to Step Steer Input using Semi-active PID Suspension Controller},
	journal = {International Journal of Computer Applications},
	issue_date = {March 2017},
	volume = {161},
	number = {12},
	month = {Mar},
	year = {2017},
	issn = {0975-8887},
	pages = {8-14},
	numpages = {7},
	url = {},
	doi = {10.5120/ijca2017913103},
	publisher = {Foundation of Computer Science (FCS), NY, USA},
	address = {New York, USA}


Roll dynamic response is investigated and studied to improve the dynamic behavior of road vehicle during sudden maneuver according to step steer input using semi-active PID suspension. A Mathematical model including the differential governing equations of operation for full road vehicle with (9) degrees of freedom and passive PID suspension is presented. Car body movements and displacements are investigated using Computer-aided simulation with Matlab Program for different vehicle speeds and specified step steer angles. A special technique is used to transform the second order differential equations of operation for the road vehicle into first order equations in order to reduce the computational time. Simulation results shows the dynamic responses of road vehicle at vertical, pitch and roll motions subjected to different vehicle speeds and step steer angles utilizing settling time and maximum peak overshoot, also the results show an improvement in dynamic roll response using semi-active PID suspension with conical shaped spring.


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Roll dynamic response, Semi active suspension, PID controller, road vehicle