Vehicle electric control suspension height automatic calibration method and system and calibration device

Abstract

The invention discloses a vehicle electric control suspension height automatic calibration method. The vehicle electric control suspension height automatic calibration method comprises the following steps: a calibration device is connected with a vehicle suspension control device; the calibration device respectively detects height values of multiple detecting points of a vehicle through a detector; the calibration device generates a control instruction according to the height values of the multiple detecting points; and the calibration device sends the corresponding control instruction to the suspension control device, so that the suspension control device controls according to the control instruction. The method can save the labor cost and the time cost, improves the calibration efficiency, and can greatly improve the production efficiency in large-batch offline vehicles. The invention further discloses a vehicle electric control suspension height automatic calibration system and the calibration device.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a method, a system and a calibration device for automatically calibrating the height of an electronically controlled suspension of a vehicle. Background technique [0002] In the related art, the suspension parameter calibration on the vehicle is generally realized through the following steps: Step 1, the CAN (Controller Area Network, controller local area network) communication device is connected to the vehicle diagnosis port, and then through the CAN network and the suspension ECU (Electronic Control Unit, electronic control unit) for communication; step 2, measure the height H1 of the left front door of the vehicle body by using a ruler, and compare the measured height value (H1) with the calibration value (H mark), and pass CAN Adjust the height of H1 by communication equipment until H1=H mark; step 3, adjust the height of the right front door (H2), the height of the left r...

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Problems solved by technology

[0003] But there is a problem: the above-mentioned suspension parameter calibration method needs to manually measure the height of the vehicle body, and generally requires the cooperation of multiple people, for example, 2 people cooperate, 1 person uses a measuring stick to measure the height of the vehicle body, and 1 person operates the CAN communication equipment adjustment. Raising or lowering the height of the vehicle body will increase labor costs, and the adjustment of the height value of the vehicle body needs to select four adjustment points, that is, H1, H2, H3, and H4 in the above method, because a change in the height of one adjustment point may cause the other three The height of the adjustment point changes, so it is necessary to check the height value repeatedly, which makes the whole calibration process consume more time and inefficiency

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