Observer-based control of an electro-pneumatic clutch using extended linearisation techniques

2012 7th IEEE Conference on Industrial Electronics and Applications (ICIEA)

et al. 2012

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This paper presents a nonlinear model-based control design for an electro-pneumatic clutch for heavy trucks, which is required at start-up or during gear shifts to disconnect the combustion engine from the gear box. This automated actuator disburdens the driver and provides the necessary actuation force according to the large torque transmitted through the powertrain. The proposed cascaded control structure consists of a fast inner control loop for the internal pressure, which is estimated by a nonlinear reduced-order observer, as well as an outer control loop for the clutch position. The design of the feedback part for the clutch position is based on sliding-mode techniques. A Lyapunovbased approach is used for the inner control loop of the internal pressure, which is usually not measured in truck applications. Thereby, high tracking accuracy is achievable for the piston position as controlled variable. The efficiency of the proposed control structure is demonstrated by experimental results from a dedicated test rig.

show abstract

“…The pneumatic subsystem also represents a differentially flat system with the internal pressure as flat output, see [1]. Hence, equation (9) can be solved for the input variable u(t).…”

Section: Lyapunov-based Control Of the Pressurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Model-based control of an electro-pneumatic clutch using a sliding-mode approach

2012 7th IEEE Conference on Industrial Electronics and Applications (ICIEA)

et al. 2012

Self Cite

show abstract

“…The pneumatic subsystem represents a differential flat system with the internal pressure as flat output, see [1]. Hence, equation (9) can be solved for the input variable u(t).…”

Section: Backstepping Control Designmentioning

confidence: 99%

“…Due to the large torque transmitted through the clutch, an electro-pneumatic actuator is advantageously used in truck applications. Often, the clutch operation is automated using a combination of feedforward and feedback control, e.g., nonlinear control approaches as presented in [1], [2], and [3]. A test rig dedicated for the development and validation of sophisticated control approaches for an electro-pneumatic clutch is in place at the Chair of Mechatronics at the University of Rostock, see Fig.…”

Section: Introductionmentioning

confidence: 99%

Observer-based backstepping control of an electro-pneumatic clutch

2012 American Control Conference (ACC)

2012

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This paper presents a nonlinear model-based control design for an electro-pneumatic clutch for heavy trucks, which is required at start-up or during gear shifts to disconnect the combustion engine from the gear box. This automated actuator disburdens the driver and provides the necessary actuation force according to the large torque transmitted through the powertrain. The proposed cascaded control structure consists of a fast inner control loop for the internal pressure as well as an outer control loop for the clutch position, which is extended by a reduced-order observer. The design of the feedback part is based on backstepping techniques. A reduced-order disturbance observer estimates the internal pressure, which is usually not measured in truck applications. Thereby, high tracking accuracy is achievable for the piston position as controlled variable. The efficiency of the proposed control structure is demonstrated by experimental results from a dedicated test rig.

show abstract

“…Often, the clutch operation is automated using a combination of feedforward and feedback control, e.g. nonlinear control approaches as presented in Aschemann et al (2011), Langjord et al (2008), and Kaasa and Takahashi (2003). A test rig dedicated for the development and validation of sophisticated control approaches for an electropneumatic clutch is available at the Chair of Mechatronics at the University of Rostock, see Fig.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Model-Predictive Control of an Electro-Pneumatic Clutch for Truck Applications

IFAC Proceedings Volumes

2012

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