Implementation of H-/Hinfinity robust fault detection algorithm for pure electric car window anti-pinch

Abstract

The invention discloses implementation of an H- / Hinfinity robust fault detection algorithm for pure electric car window anti-pinch, which comprises the following steps: (1) constructing a pure electric car window motor control model on the basis of fault diagnosis theories of an analytic model; (2) designing an optimal robust fault diagnosis observer based on H- / Hinfinity performance index, and carrying out iteration solution by using an LMI (linear matrix inequality); and (3) designing thresholds and anti-pinch fault occurrence determination standards according to the obtained optimal performance index. The window motor mathematical model is solved by using the H- / Hinfinityperformance index optimizing algorithm, thereby better adapting to the system complexity and noise disturbance uncertainty, and well inhibiting noise, external disturbance and other factors, so that the mistaken anti-pinch probability is reduced, and the sensitivity for anti-pinch fault is higher; and thus, the mistaken anti-pinch fault can be detected in time 0.15 second after the anti-pinch occurs, thereby enhancing the use safety of the pure electric car window to some extent.

Description

technical field [0001] The invention belongs to the technical field of automotive electronics, and specifically relates to the problem of robust fault detection of pure electric car window anti-pinch, based on H - / H ∞ Robust fault detection and control technology for performance indicators Construct a series of detection system models, detection methods, detection criteria and threshold parameters to detect the occurrence of window anti-pinch and specific anti-pinch detection time. Background technique [0002] The automatic window lifting control with anti-pinch function adds the anti-pinch function on the basis of the automatic window lifting control, that is, when the window is rising, if an obstacle is detected, the signal will be sent to the processor. And then execute the anti-pinch program, so that the car window is stopped or turned into an automatic lowering mode. [0003] For the anti-pinch control of car windows, the current detection schemes can be divided int...

AI Technical Summary

Problems solved by technology

The former of the two methods of tactile detection has poor real-time performance, and the latter is prone to false anti-pinch operations.

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