Smith predictor compensating for vehicle actuator delays in cooperative ACC systems

Haitao Xing (Corresponding author), Jeroen Ploeg, H. Nijmeijer

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Uittreksel

Cooperative adaptive cruise control (CACC) employs intervehicle wireless communications to realize short intervehicle distances and, hence, to improve road throughput. However, the vehicle actuator delay and communication delay have a significant effect on the (string) stability properties. Therefore, a Smith predictor has been applied to compensate for the vehicle actuator delay, while utilizing a Proportional-Derivative controller and a constant time gap spacing policy. The control actuation is conducted on a delay-free vehicle model to follow a preceding vehicle with a desired distance, such that the resulting scheme leads to individual vehicle stability independent of the vehicle actuator delay. Moreover, this approach allows for a smaller minimum string-stable time gap compared to without the compensator, thus taking full advantage of CACC. In addition, the Smith predictor has been adapted to take acceleration disturbances into account. The results are experimentally validated using a platoon of two passenger vehicles, illustrating the practical feasibility of this approach.

Originele taal-2Engels
Artikelnummer8573839
Pagina's (van-tot)1106-1115
Aantal pagina's10
TijdschriftIEEE Transactions on Vehicular Technology
Volume68
Nummer van het tijdschrift2
DOI's
StatusGepubliceerd - feb 2019

Vingerafdruk

Smith Predictor
Cooperative Systems
Actuator
Actuators
Cooperative Control
Adaptive Control
Adaptive cruise control
Strings
Communication Delay
Compensator
Time Constant
Wireless Communication
Spacing
Throughput
Disturbance
Directly proportional
Controller
Derivative
Communication
Derivatives

Citeer dit

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abstract = "Cooperative adaptive cruise control (CACC) employs intervehicle wireless communications to realize short intervehicle distances and, hence, to improve road throughput. However, the vehicle actuator delay and communication delay have a significant effect on the (string) stability properties. Therefore, a Smith predictor has been applied to compensate for the vehicle actuator delay, while utilizing a Proportional-Derivative controller and a constant time gap spacing policy. The control actuation is conducted on a delay-free vehicle model to follow a preceding vehicle with a desired distance, such that the resulting scheme leads to individual vehicle stability independent of the vehicle actuator delay. Moreover, this approach allows for a smaller minimum string-stable time gap compared to without the compensator, thus taking full advantage of CACC. In addition, the Smith predictor has been adapted to take acceleration disturbances into account. The results are experimentally validated using a platoon of two passenger vehicles, illustrating the practical feasibility of this approach.",
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Smith predictor compensating for vehicle actuator delays in cooperative ACC systems. / Xing, Haitao (Corresponding author); Ploeg, Jeroen; Nijmeijer, H.

In: IEEE Transactions on Vehicular Technology, Vol. 68, Nr. 2, 8573839, 02.2019, blz. 1106-1115.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

TY - JOUR

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AU - Ploeg, Jeroen

AU - Nijmeijer, H.

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N2 - Cooperative adaptive cruise control (CACC) employs intervehicle wireless communications to realize short intervehicle distances and, hence, to improve road throughput. However, the vehicle actuator delay and communication delay have a significant effect on the (string) stability properties. Therefore, a Smith predictor has been applied to compensate for the vehicle actuator delay, while utilizing a Proportional-Derivative controller and a constant time gap spacing policy. The control actuation is conducted on a delay-free vehicle model to follow a preceding vehicle with a desired distance, such that the resulting scheme leads to individual vehicle stability independent of the vehicle actuator delay. Moreover, this approach allows for a smaller minimum string-stable time gap compared to without the compensator, thus taking full advantage of CACC. In addition, the Smith predictor has been adapted to take acceleration disturbances into account. The results are experimentally validated using a platoon of two passenger vehicles, illustrating the practical feasibility of this approach.

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