Intelligent grading method for electronic parking braking force
A technology of electronic parking brake and grading method, applied in the direction of brakes, brake transmission devices, vehicle components, etc., can solve the problems of slow parking brake response, short service life, poor comfort experience, etc. Fast braking response, good comfort experience, and long service life
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[0057] The electronic parking system ECU is integrated in the ESC module, and the software is integrated in accordance with the VDA305-100 specification. Static parking is divided into normal mode and hub mode according to different conditions;
[0058] Working logic in normal mode conforms to figure 1 , judge the current slope through the output value of the longitudinal acceleration sensor inside the vehicle. According to the slope value, select the corresponding path to determine the level of the output parking brake force; the calculation method is as follows:
[0059] The vehicle is on a slope with a slope s, and the sensor outputs a value, then the slope s=tan(arcsin(a / 9.8)). Positive values are uphill and negative values are downhill.
[0060] In the normal mode, the output parking brake force is divided into 3 sections. The specific force value is calculated theoretically while considering the limit situation and safety redundancy preset, and the current charact...
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