Intelligent control method for automobile electric window

An intelligent control, power window technology, applied in door/window accessories, power control mechanisms, buildings, etc., can solve the problems of reduced motor service life, inability to lift and lower windows, and inability to move or jog the windows, and achieve extended use. The effect of longevity and extended use time

Inactive Publication Date: 2012-03-28
天海汽车电子集团股份有限公司
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Problems solved by technology

If the value is set too large, the MCU will not be able to judge that a stall has occurred and stop the motor drive output when the window glass encounters an obstacle from the top to the bottom or in the middle, and the MCU will stop the motor drive output, so the service life of the motor will be reduced. On the contrary, if the value is set too

Method used

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  • Intelligent control method for automobile electric window
  • Intelligent control method for automobile electric window
  • Intelligent control method for automobile electric window

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Embodiment Construction

[0014] like figure 1 , figure 2 Shown, the present invention comprises the steps:

[0015] Step 1: After the electric window motor is started, start the learning program first during the initial period of time (t0 + t) when the electric window motor is started, and the MCU collects the current feedback value, and obtains the peak current from the collected current feedback value I Inrush , and calculate the motor stall current value of this action according to the following formula I Stall : I Stall ≈I Inrush * P， Among them, P is the motor parameter, and the P value in the formula takes the value of the motor parameter 80%~85%， And store this parameter in the temporary storage unit of MCU;

[0016] Step 2: After the learning program is over, collect the current feedback value of the motor at regular intervals, compare the current feedback value with the locked rotor current value, if it is greater than or equal to the locked rotor current value ， Then stop the m...

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Abstract

The invention discloses an intelligent control method for an automobile electric window. The intelligent control method comprises the following steps of: I, starting an electric window motor, starting a learning program, acquiring a current feedback value with an MCU (Micro Controller Unit), selecting peak value current IInrush from the acquired current feedback value, computing the motor locked-rotor current value of the action according to a formula, i.e., IStall:IStall is approximately equal to IInrush*P, taking 80-85 percent of P serving as a motor parameter, and storing the motor parameter into a temporary storage unit of the MCU; and II, acquiring the current feedback value of the motor at a certain time interval at the end of the learning program, comparing the current feedback value with the locked-rotor current value, stopping motor driving output if the current feedback value is greater than or equal to the locked-rotor current value, and continuing to perform the step II if the current feedback value is smaller than the locked-rotor current value. In the invention, intelligent control is performed by using the MCU, so that automatic correction of the motor locked-rotor current value is driven by using the electric window, and the service life of the electric window is prolonged.

Description

technical field [0001] The present invention relates to the field of automobile control, in particular to an intelligent control method for electric windows of automobiles. Background technique [0002] During the use of the car electric window, with the gradual deformation of the window and the gradual aging of the motor coil, the locked-rotor current of the window will change accordingly. According to the traditional control method, the locked-rotor current value of the motor is set to a fixed value, and the window can operate normally when the condition of the window is good at the beginning. When the above factors occur, the locked rotor current of the window drive motor will increase. If it is greater than the locked rotor current value set at the beginning, the window will not be able to lift or can only be jogged. [0003] Setting the motor stall current value to a fixed value has many disadvantages. If the value is set too large, the MCU will not be able to judge t...

Claims

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Application Information

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IPC IPC(8): E05F15/20E05F15/10E05F15/689E05F15/70
Inventor 杨国胜张庆军张杰
Owner 天海汽车电子集团股份有限公司
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