Browse Publications Technical Papers 2019-26-0180
2019-01-19

A Novel Method for Active Vibration Control of Steering Wheel 2019-26-0180

Automotive sector all around the globe is rising rapidly. Every now and then, new vehicles are coming up, which are light in weight, durable, luxurious and highly efficient. One of the major criteria to design such a kind, is to have a good control over the unwanted vibrations in a vehicle and here, the passive control measures alone won't be able to cope up with the future requirements of vibration control. Thus, the need for active control is rising rapidly. Active Vibration Control is a promising approach for the control of vibration whenever the passive systems are inadequate. Active control mainly comprises of three parts; sensor -detects the input disturbance, actuator -provide counter measures and control logic -processing of input disturbances and converting it into logical output. Lot of methods for active vibration control are available but this paper deals with active control of steering wheel vibrations of an LCV. A steering wheel is, one such component that directly transfers vibration to the driver. Active technique described here is implemented using accelerometer sensor, IMA (inertial mass actuator) and feed forward Fx-LMS (Filtered reference Least Mean Square) control algorithm. IMA is a single-degree-of-freedom oscillator, comprises of a force generating element. These actuators are compact in size and their range of application is very large. Also, to enable a control, IMA needs to be coupled to the structure at a single point, acting as an add-on to the passive system. FxLMS is a type of adaptive algorithm which is computationally simple and it also includes compensation for secondary path effects by using an estimate of the secondary path. This paper showcases various tasks from experimentations to implementation on test rig and on vehicle. The Experimental Structural Analysis of LCV steering system, deals with Measurement and analysis of vibrations of steering wheel in static as well as in dynamic conditions along with the FEA co-relation. In Virtual Analysis of Steering Wheel, model of the system is reduced (Model Order Reduction) and its state space model is generated. The next task was to design & develop the software and hardware for IMA (Inertial mass Actuator) and also the control part. The final task is the implementation of the same on the Test rig and on vehicle-level.

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