Electric skylight self-adaptive anti-pinch method based on speed detection

Abstract

The invention provides an electric skylight self-adaptive anti-pinch method based on speed detection. The method includes the steps that whether the resistance difference value of the adjacent positions of a skylight in the operation process is larger than or equal to a set anti-pinch force threshold value or not is detected, and when the resistance difference value is larger than or equal to the set anti-pinch force threshold value, an MCU judges that an anti-pinch function is achieved and controls a motor to reversely rotate to a designated position; and when the resistance difference value is smaller than the set anti-pinch force threshold value, the MCU judges that the anti-pinch function is not achieved and controls the motor to continuously rotate to the designated position. By the adoption of the method, the anti-pinch force is calculated through the resistance difference value of the adjacent positions, so that the anti-pinch force is relatively stable; a self-adaptive algorithm and a learning and calibration algorithm are adopted to be combined, so that the requirement for the accuracy of a skylight mechanism is low; only position information of resistance sudden change of an anti-pinch region is recorded, storage space is saved, the calculated amount is small, and the requirement for the MCU is low; and various additional conditions are used for comprehensively and jointly judging the anti-pinch force, the anti-jamming capability is high, and reliability is high.

Description

technical field [0001] The invention relates to the technical field of electric vehicle window anti-pinch technology, in particular to an adaptive anti-pinch method for electric sunroofs based on speed detection. Background technique [0002] like figure 1 As shown, the existing anti-pinch sunroof controller is generally composed of Hall sensors, microcontrollers (MCU), input and output circuits, motor drive circuits (relays or MOS tubes), power circuits, housings, connectors, and sunroof motors. . [0003] There are several implementation schemes for existing products: a) The anti-pinch controller based on current detection detects the motor current during the operation of the sunroof. If the current exceeds a certain range, it is considered to be anti-pinch. This method is relatively The cost is relatively high, and the requirements for the mechanical structure of the sunroof are relatively high; b) The stored anti-pinch algorithm records the change of the running resist...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is: in order to overcome the disadvantages in the prior art that the algorithm is single, the anti-clamping force is too large or the anti-clamping force is unreliable, and it is easy to pinch the passengers, the present invention provides an electric sunroof based on speed detection. Adaptive anti-pinch method

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