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Active acoustic control on a quarter-car suspension using a printed strain sensor embedded into the tire
Last modified: 2017-05-26
Abstract
Successful vehicle monitoring, safety and comfort requires access to measured data on vehicle roll, pitch, yaw, road-tire friction
coefficient and transmitted forces and torques to each tire, as well as the tire pressure, speed, and temperature. This information
then needs to be processed by the Sensor Feedback Control Unit ((SFCU) as shown in Figure 1 to maintain control of various
safety features like Electronic Stability Control (ESC), Traction Control System (TCS), Anti-lock Brake System (ABS), and
Active Rollover Protection (ARP), and to improve the performance of Active Noise Control (ANC) systems to improve
handling, comfort, vehicle traction, vehicle stability and safety.
Continuous measurement of forces applied by the road to the tire for a driving car is important to control the vibration inside the
cabin car. The best noise control performance inside the cabin is obtained when the force measurement is taken close to the
disturbance source (tire-road interaction). Therefore, it is recommended to place the force sensor into the tire to make it as close
as possible from the source of disturbance to achieve the best noise control performance inside the cabin car. For this aim, the
printed strain sensor previously developed and validated for intelligent tire is used in this paper. A prototype of Active Structural
Acoustic Control (ASAC) using the feedforward Filtered-Reference-Least Mean Square (FX-LMS) controller is implemented
on a laboratory quarter-car test bench. The noise reduction obtained when using the printed strain sensor embedded into the tire
is compared with those obtained when using a reference force sensor. At the end, the control performance is studied for a
rotating tire.
coefficient and transmitted forces and torques to each tire, as well as the tire pressure, speed, and temperature. This information
then needs to be processed by the Sensor Feedback Control Unit ((SFCU) as shown in Figure 1 to maintain control of various
safety features like Electronic Stability Control (ESC), Traction Control System (TCS), Anti-lock Brake System (ABS), and
Active Rollover Protection (ARP), and to improve the performance of Active Noise Control (ANC) systems to improve
handling, comfort, vehicle traction, vehicle stability and safety.
Continuous measurement of forces applied by the road to the tire for a driving car is important to control the vibration inside the
cabin car. The best noise control performance inside the cabin is obtained when the force measurement is taken close to the
disturbance source (tire-road interaction). Therefore, it is recommended to place the force sensor into the tire to make it as close
as possible from the source of disturbance to achieve the best noise control performance inside the cabin car. For this aim, the
printed strain sensor previously developed and validated for intelligent tire is used in this paper. A prototype of Active Structural
Acoustic Control (ASAC) using the feedforward Filtered-Reference-Least Mean Square (FX-LMS) controller is implemented
on a laboratory quarter-car test bench. The noise reduction obtained when using the printed strain sensor embedded into the tire
is compared with those obtained when using a reference force sensor. At the end, the control performance is studied for a
rotating tire.