Soft stop control method of car electric window anti-pinch control system based on current sampling

Abstract

The invention discloses a soft stop control method of a car electric window anti-pinch control system based on current sampling. When window glass is in a rising state, a car window anti-pinch controller is used for collecting motor current in a car window glass lifting driving mechanism, and calculating the position of the current automobile window glass and the motor parameters in the car windowglass lifting driving mechanism according to the acquired motor current; and when the position of the window glass and the parameter value of the motor in the lifting driving mechanism reach a set threshold value, the car window anti-pinch controller cuts off the power supply in advance and controls the car window glass to automatically stop ascending through the car window glass lifting drivingmechanism, and then the car window glass lifting driving mechanism is used for controlling the car window glass to abut against the top of the car window at a certain force. According to the control method, on the premise that the car window is completely closed, the car window system protection function can be achieved, and the control method not only has the soft stop function of the top of thecar window, but also can guarantee the complete closing function of the car window.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a soft stop control method of an electric window anti-pinch control system of an automobile based on current sampling. Background technique [0002] With the continuous improvement of people's awareness of car safety in recent years, vehicle manufacturers have also paid more and more attention to car comfort, and introduced electric windows; with the development of demand, in order to provide more convenient and fast control, it is necessary for the windows to have Automatic lifting function, but considering the relatively large clamping force of the electric window, the maximum clamping force can reach 500N, in order to protect the life and safety of the people in the car, the electric window with the anti-pinch function of the window is designed. With the development of demand, electric windows with window anti-pinch and automatic lifting functions have gradually become a s...

AI Technical Summary

Problems solved by technology

However, when the rubber strip is aging, the steel wire becomes longer, the mounting hole is loose, or the position changes due to mechanical wear, etc., these situations will cause inaccurate or wrong soft stop positions, especially when the window reaches the top closed position. If there is a position deviation of 1mm to 2mm, it may cause air leakage or water leakage. When driving at high speed, it is easy to form a large wind noise, which will disturb customers and cause great complaints from customers.

Therefore, generally speaking, the soft stop function at the top of the window will not be turned on; if the soft stop function at the top of the window is to be enabled, the accuracy of the window system must meet higher requirements, otherwise it is difficult to ensure that there will be no air leakage, water leakage or In the case of high wind noise