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Method for estimating engine crank corner and rotation speed

A crankshaft angle and crankshaft speed technology is applied in the estimation of engine crankshaft angle and speed. , the effect of reducing interference sources

Inactive Publication Date: 2009-06-10
NAT TAIPEI UNIV OF TECH
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Problems solved by technology

However, this method needs to use the engine's rotational inertia and viscosity coefficient parameters. When there is an error in this parameter, it will affect the estimation accuracy of the filter and the robustness of the system.
[0008] Furthermore, although the calculation method for obtaining the feedback gain value matrix related to pole configuration and solving the Riccati (Riccati) equation, and the method for judging the crankshaft running stroke belong to the previous mathematical operation technology that has been disclosed, it has not yet been seen in the engine crankshaft. It is applied to the closed-loop estimation of rotation angle and speed and auxiliary processing of crankshaft dynamic sampling signal, and it is presented

Method used

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  • Method for estimating engine crank corner and rotation speed
  • Method for estimating engine crank corner and rotation speed
  • Method for estimating engine crank corner and rotation speed

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Embodiment Construction

[0028] As shown in Figure 1, it discloses the framework of the method for estimating the crankshaft angle and rotational speed of the engine of the present invention, at least comprising a signal processing unit 2 and another rotational angle and rotational speed estimation unit 3 for estimating the crankshaft angle 5 and Speed ​​6. In addition, the present invention may also include a stroke judging unit 4 to assist the signal processing unit 2 in processing the crankshaft signal more accurately.

[0029] Above-mentioned estimating method is mainly configured on an engine control unit 10 or its periphery which can utilize crankshaft angle sensor 12 to detect crankshaft tooth signal and have a timer 13 signal output on flywheel 11, and execute the crankshaft estimation engine Rotation angle 5 and crankshaft speed 6, its method is as follows:

[0030] Such as figure 2 , image 3 shown;

[0031] (1), use a signal processing unit 2, start counting 20 from the timer when the e...

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Abstract

This invention provides a testing method for the engine winch's rotation angle and speed, it includes taking advantage of a signal processing cell, which can calculate the winch dynamic sampling signal from the gear information sensing by the sensor of the winch's rotating angle. Taking advantage of the scatter dynamic model, it can design an estimate cell including the estimator and feedback attenuation matrix to read the dynamic sampling signal of the winch, and work toward to the estimating rotating angle and speed in the close circuit current. This invention also consists of taking advantage of the judging cell for the rotation of the winch which can assistant the signal processing cell to accurately calculate the dynamic signal of the winch, and reduce the interface from the outside and reduce the effectiveness of the engine controlling.

Description

technical field [0001] The invention provides a method for estimating the crankshaft angle and rotational speed of an engine, and in particular relates to a time-based method to process the measured crankshaft signal, and uses the pole arrangement method, solving the Riccati equation and Riccati's infinity Time domain and other methods are used to obtain the required feedback gain value matrix for closed-loop state estimation of crankshaft angle and rotational speed. The present invention also includes using a crank stroke discrimination method to assist in the calculation of the crankshaft dynamic sampling signal. Background technique [0002] Generally, it is widely used in the market and is a relatively advanced internal combustion engine (ie engine), most of which are equipped with an engine control unit (Engine Control Unit, ECU) to read the crank angle, speed, acceleration, etc. of the relevant engine basic signal. Among them, the crankshaft angle signal can provide ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D45/00
Inventor 陈柏全吴浴沂谢丰吉
Owner NAT TAIPEI UNIV OF TECH
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