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Fault detection method for vehicle crosswise power remote measurement and control system

A fault detection, remote measurement and control technology, applied in the direction of test/monitoring control system, general control system, control/regulation system, etc.

Active Publication Date: 2017-02-15
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the fault detection problem of the networked vehicle lateral power remote measurement and control system formed by the TCP type transmission protocol

Method used

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  • Fault detection method for vehicle crosswise power remote measurement and control system
  • Fault detection method for vehicle crosswise power remote measurement and control system
  • Fault detection method for vehicle crosswise power remote measurement and control system

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Embodiment Construction

[0070] The present invention will be further described below in conjunction with the accompanying drawings.

[0071] figure 1 It is a schematic diagram of the kinematics of the lateral power system of the vehicle in the present invention, and the specific steps are as follows.

[0072] first step:

[0073] Select the vehicle side slip angle and angular velocity as the state variables, and the steering angle as the input variable, and the state space model is given as follows:

[0074]

[0075] in

[0076]

[0077] in m represents the total mass, is the warp velocity, are the front and rear cornering stiffnesses of the vehicle, respectively, Indicates the rotational inertia on the Z axis, represent the distances from the center of gravity to the front and rear axles, respectively.

[0078] Step two:

[0079] Sensor output matrix C is given as follows:

[0080]

[0081] set up , and the sampling time is set to 0.1s, the following discrete-time parameter m...

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Abstract

The invention relates to the field of system fault detection, and particularly relates to a fault detection method for a vehicle crosswise power remote measurement and control system. The method comprises the steps that the state space model of the vehicle crosswise power remote measurement and control system is established; the data packet loss characteristic of a multi-measurement channel under a TCP class protocol is described by a Bernoulli random variable; the quantization error of the channel is represented by a logarithmic function; measurements with data packet loss and quantization errors are used to design a fault detection filter based on an observer to generate residuals; data packet information in intermittent measurements is used to define an index as described in the description based on a generalized transfer function operator, and the index is maximized; a filter parameter matrix is acquired by solving a modified Riccati equation; a residual evaluation function value is calculated; and decision logic is set to realize fault detection. According to the invention, the fault detection of the vehicle crosswise power remote measurement and control system with data packet loss and quantization errors under the TCP class protocol is realized, and the detection reliability is improved.

Description

technical field [0001] The invention relates to the field of dynamic system fault detection, in particular to a fault detection method for a vehicle lateral power remote measurement and control system. Background technique [0002] At present, the detection of vehicle comprehensive performance is only in the state of manual or semi-automatic detection. With the development of network technology and measurement and control technology, the network-based vehicle remote measurement and control system plays a very important role in improving the overall detection technology level. Its biggest feature is that it is far away from the scene. , Save manpower, high detection efficiency, accurate detection results. [0003] Due to the introduction of the network as a transmission medium in the measurement and control system, in practical applications, the sensor output is intermittent and contains various forms of interference. Within a certain time interval, data packets may be diffi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
CPCG05B23/0243G05B2219/24065
Inventor 李岳炀王中华张永良郑建敏王灿
Owner UNIV OF JINAN
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