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Perturbation-observation-based self-learning engine torque control system and method thereof

An engine torque and torque control technology, applied in the field of self-learning engine torque control system, can solve the problems of long time to re-adjust PID control parameters, unsatisfactory engine torque tracking effect, and poor algorithm adaptive ability, so as to solve the problem of poor self-adaptability. , improve overshoot and lag problems, reduce the effect of modeling work

Active Publication Date: 2018-05-04
TIANJIN UNIV
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AI Technical Summary

Problems solved by technology

[0004] 1) Under the transient cycle, the torque tracking effect of the engine is not ideal, and there are overshoot and hysteresis
[0005] 2) After changing the engine parameters or configuration, it takes a long time to readjust the PID control parameters, and the algorithm adaptive ability is poor

Method used

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Embodiment Construction

[0032]The disclosure provides a self-learning engine torque control system and method based on disturbance observation. The disclosure proposes an engine that combines active disturbance control (Active Disturbance Rejection Control, ADRC) and dynamic feedforward control (Dynamic Feedforward Control, DFF) Torque control method. On the one hand, the dynamic model from the control target (engine output torque) to the control input (throttle opening) is directly established, and this model is used in the design of feedforward control; on the other hand, since the engine is a very complex nonlinear system , and the engine will be disturbed by various uncertainties from inside and outside the system during operation, it is difficult to obtain an ideal control effect only by relying on feedforward. Therefore, on the basis of feed-forward control, an ADRC feedback control unit is designed for engine torque control. ADRC is composed of P control module and Extended State Observer (Ex...

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Abstract

The invention provides a perturbation-observation-based self-learning engine torque control system and a method for the perturbation-observation-based self-learning engine torque control system and provides the engine torque control method which combines active perturbation control and dynamic feedforward control. On the one hand, a dynamic model from a control target to control input is directlyestablished, and the model is used for the design of the feedforward control; on the other hand, on the basis of the feedforward control, an ADRC feedback control unit is designed for engine torque control, and the internal and external total perturbation of the system can be observed and compensated in real time. The perturbation-observation-based self-learning engine torque control system and the method for the perturbation-observation-based self-learning engine torque control system have the beneficial effects that on the basis of an estimation and compensation method of total perturbation,an accurate engine torque model is not needed, an approximate estimate of the engine torque order is just needed, a control algorithm is convenient to design, the algorithm is high in parameter adjusting and robustness, the transient torque control performance can be effectively improved, and the adaptive performance of the algorithm is improved.

Description

technical field [0001] The present disclosure relates to the field of engine torque control, in particular to a disturbance observation-based self-learning engine torque control system and method thereof. Background technique [0002] The bench system composed of engine-dynamometer can be used to test the power, economy and emission performance of the engine, and it is a very important experimental equipment in the engine development stage. In the most commonly used modes of engine control torque and dynamometer control speed, the dynamometer is used to simulate the load of the engine, and the engine speed can be quickly stabilized at the target speed value by adjusting the loading torque; the engine achieves output torque following the target by controlling the accelerator pedal The torque value constitutes a dual-input and dual-output coupling system. The increasingly stringent emission regulations and the introduction of transient cycle tests such as ETC, WHTC, and RDE h...

Claims

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Application Information

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IPC IPC(8): F02D41/00F02D41/14
CPCF02D41/0002F02D41/1401F02D2041/141F02D2041/1433F02D2200/06F02D2200/1002
Inventor 谢辉阮迪望张国辉
Owner TIANJIN UNIV
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