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

Abstract

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.

Control Design and Validation for Floating Piston Electro-Pneumatic Gearbox Actuator

“…In [21], an SMC is presented for an electro-pneumatic clutch actuator, then a controller reduction possibility is proposed. In [22], a cascaded tracking controller is performed by combining sliding-mode and Lyapunov techniques based on a nonlinear state-space representation. A similar method is presented in [23].…”

Fuzzy Fractional Order Sliding Mode Control for Automatic Clutch of Vehicle AMT

“…However, an accurate and rapid position control is difficult to achieve because of the nonlinear characteristics of the dry clutch, time varying parameters, and other factors [14]. Various control methods have been proposed to overcome the problems of nonlinear control; these methods include flatness-based control [15], model predictive control [16], sliding mode control (SMC) [17][18][19], adaptive nonlinear observer [20], feed forward-feedback control [21], and adaptive Neuron PID control [22].…”

Compound Control of Sliding-Model Variable Structure and Fractional Order PID for Automatic Clutch of Vehicle AMT

“…Suppose that the frequency band of filtering in the fitting is ) ( The pole-zero and gain of the filter are given by 1 2…”

“…The control method of the sliding-mode variable structure of the clutch was presented in the literature [1][2][3][4][5][6]. The control characteristics of the clutch were improved by the robustness of the control method against system disturbance and parameter changes.…”

“…The automatic control of an automated manual transmission (AMT) clutch requires the solution to and the tracking of the rule of the clutch engagement through reasonable control by the clutch actuator [1,2].…”