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Electronic throttle valve opening degree estimation method and system based on Kalman-like filtering

An electronic throttle and estimation algorithm technology, which is applied in the direction of engine testing, machine/structural component testing, instruments, etc., can solve the problems of inaccurate estimation of electronic throttle valve slices, etc., and achieve reduced interference, strong robustness, Estimate the effect of high precision

Active Publication Date: 2020-04-10
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, currently proposed methods for estimating the electronic throttle all assume that the interference noise is Gaussian noise, but the noise in the sensor circuit is the superposition of various random noises, which belongs to non-Gaussian white noise. Under the influence of non-Gaussian white noise, the current Some methods cannot accurately estimate the position of the electronic throttle valve

Method used

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  • Electronic throttle valve opening degree estimation method and system based on Kalman-like filtering
  • Electronic throttle valve opening degree estimation method and system based on Kalman-like filtering
  • Electronic throttle valve opening degree estimation method and system based on Kalman-like filtering

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Embodiment 1

[0043] Embodiment 1 of the present disclosure provides an electronic throttle opening estimation method based on a Kalman-like filter, such as figure 1 As shown in the figure, θ 0 is the given angle, y in is the input of the controller, u is the input voltage of the electronic throttle system, d is the disturbance of the system, θ is the real opening of the throttle, v is the measurement noise, is the estimated value of the actual throttle opening, including the following steps:

[0044] Step 1: The electronic throttle position sensor collects data on the opening of the electronic throttle.

[0045] Step 2: The opening of the electronic throttle measured by the position sensor is obtained through the Kalman-like estimator to obtain the filtered opening of the electronic throttle.

[0046] The Kalman filter structure described in step 2 is as follows figure 2 As shown, the flow chart of Kalman filter algorithm is as follows: image 3 As shown, it specifically includes th...

Embodiment 2

[0072] Embodiment 2 of the present disclosure provides an electronic throttle opening estimation system based on a Kalman-like filter, including;

[0073] The data acquisition module is configured to: acquire the electronic throttle opening data collected by the electronic throttle position sensor;

[0074] The data filtering module is configured to: use the electronic throttle opening data measured by the position sensor to obtain the filtered electronic throttle opening through a Kalman-like estimation algorithm;

[0075] The feedback control module is configured to: feed back the filtered opening value of the electronic throttle to the on-board controller, and the on-board controller further controls the opening of the electronic throttle according to the filtered opening value.

[0076] For the specific Kalman-like estimation algorithm, refer to Embodiment 1, which will not be repeated here.

Embodiment 3

[0078] Embodiment 3 of the present disclosure provides a medium on which a program is stored, and when the program is executed by a processor, the steps in the method for estimating the electronic throttle opening based on a Kalman-like filter as described in Embodiment 1 of the present disclosure are implemented. .

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Abstract

The invention provides an electronic throttle valve opening degree estimation method and an electronic throttle valve opening degree estimation system based on Kalman-like filtering. The electronic throttle valve opening degree estimation method comprises the steps of: acquiring electronic throttle valve opening degree data acquired by means of an electronic throttle valve position sensor; and processing the opening degree data, measured by means of the position sensor, of an electronic throttle valve by adopting a Kalman-like estimation algorithm to obtain a filtered opening degree of the electronic throttle valve, and feeding the filtered opening degree value of the electronic throttle valve back to a vehicle-mounted controller for further controlling the opening degree of the electronicthrottle valve according to the filtered opening degree value. By adopting the Kalman-like estimation algorithm for filtering an output signal of the electronic throttle valve position sensor, interference of non-Gaussian white noise on a measurement result is reduced, and an estimation strategy is high in estimation precision and high in robustness.

Description

technical field [0001] The present disclosure relates to the technical field of electronic throttle opening estimation, in particular to a Kalman-like filter-based electronic throttle opening estimation method and system. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] The electronic throttle is an important control part of the automobile engine, which is composed of a DC motor, a position sensor, a return spring, etc. The electronic throttle is a single-input and single-output system. When the voltage is input, the electronic throttle executes the instructions of the electronic control unit (ECU), and the throttle valve plate will produce a rotational movement. The ECU controls the engine by adjusting the opening of the electronic throttle. air intake. [0004] The electronic throttle plays a fundamental role in the adjustment of engi...

Claims

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Application Information

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IPC IPC(8): G01M15/04G06F17/15
CPCG01M15/042G06F17/15
Inventor 孙波刘一鸣杨君张承慧
Owner SHANDONG UNIV
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