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http://dx.doi.org/10.7467/KSAE.2012.20.2.030

Identification of Optimal Control Parameters for a Pneumatic Active Engine Mount System  

Kim, Il-Jo (Mechatronics Center, Mechasys Co., Ltd.)
Lee, Jae-Cheon (Department of Mechanical and Automotive Engineering, Keimyung University)
Choi, Jae-Yong (Technical Center, Daeheung Rubber & Technology Co., Ltd.)
Kim, Jeong-Hoon (Vehicle System Development Team, Hyundai-kia Motors Co.)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.20, no.2, 2012 , pp. 30-37 More about this Journal
Abstract
Pneumatic Active Engine Mount(PAEM) with open-loop control system has been developed to reduce the transmission of the idle-shake vibration induced by engine effectively and economically. A solenoid valve installed between PAEM and vacuum tank is on-off switched by the Pulse Width Modulate(PWM) control signal to decrease the dynamic stiffness of the engine mount. This paper presents the methodology to identify the optimal values of control parameters of a PAEM, i.e, turn-on timing and duty ratio of PWM signal for 6 different idle driving conditions. A scanning algorithm was first applied to the vehicle test to obtain the approximate optimal control parameters minimizing the vibration at front seat rail and at steering wheel. Then the PAEM system identification was fulfilled to find accurate optimal control parameters by using multi-layer neural networks of Levenberg-Marquardt algorithm with vehicle test data.
Keywords
PAEM(Pneumatic Active Engine Mount); Optimal control parameter; Turn-on timing; Duty ratio; Neural networks;
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