Method for acquiring speed of input shaft of automobile

A technology of input shaft speed and input shaft speed, applied in the testing/calibration, linear/angular velocity measurement, velocity/acceleration/shock measurement of velocity/acceleration/shock measurement equipment, etc. Inaccurate speed value and other problems, to achieve the effect of accurate measurement and easy calibration

Inactive Publication Date: 2019-10-29
HANTENG AUTOMOBILE CO LTD
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  • Description
  • Claims
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Problems solved by technology

[0004] At present, the speed of the input shaft of the car is measured by adding a speed sensor to the input shaft, without considering the value of the sensor's own gear rotation for detection and the speed ratio of the input shaft speed sensor. There is a gap between them, which leads to inaccurate speed value output by the sensor, which affects the subsequent calibration of the transmission

Method used

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  • Method for acquiring speed of input shaft of automobile
  • Method for acquiring speed of input shaft of automobile
  • Method for acquiring speed of input shaft of automobile

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The specific embodiments described here are only used to explain the present invention, not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] see Figure 1-2 , the invention provides a method for collecting the rotational speed of an automobile input shaft, comprising the following steps:

[0029] S1: Determination of observations: use the system chip and input shaft speed sensor that comes with the car to obtain the input shaft speed sensor acquisition value uilvs_crk,...

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Abstract

The invention discloses a method for acquiring the speed of the input shaft of an automobile, comprising the following steps of S1: determining an observed quantity; S2: determining a standard quantity; S3: starting Simulink; S4: calculating the observed quantity; S5: calculating the initial input shaft speed value nofones; S6: performing a filtering process; S7: acquiring a program; and S8: burning. The method, by means of the speed ratio value C_ONE_TO_TWO_IO and the tooth value C_TWO_TEETH_NO of an input shaft speed sensor, a filter coefficient C_N_FITER1 and a filter coefficient C_N_FITER2, obtains the corrected input shaft speed value nofones by the filtering process and the corresponding calculation, so as to achieve the accurate measurement of the input shaft speed value nofones tofacilitate subsequent calibration.

Description

technical field [0001] The invention belongs to the technical field of acquisition of rotational speeds of automobile input shafts, and in particular relates to a method for acquisition of rotational speeds of automobile input shafts. Background technique [0002] Automobile has the following definition: a vehicle driven by power and having 4 or more wheels, and it is mainly used for: carrying people and goods; traction vehicles carrying people and goods; vehicles for special purposes. More and more widely used equipment, get more and more widely used. [0003] The input shaft in the car is a shaft connecting the clutch and the gearbox. Its function is to input the power of the car engine into the gearbox through the control of the clutch. The accuracy of the input shaft speed collection value is important for car calibration, especially for the transmission. Calibration plays a very important role. [0004] At present, the speed of the input shaft of the car is measured b...

Claims

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Application Information

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IPC IPC(8): G01P3/00G01P21/02
CPCG01P3/00G01P21/02
Inventor 娄孝超
Owner HANTENG AUTOMOBILE CO LTD
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