Method for controlling the lifting of a vehicle window, lifting control system for a vehicle window and vehicle

Abstract

The application discloses a glass lifting control method, a vehicle glass lifting control system and a vehicle. The method comprises the following steps: acquiring real-time torque information of a glass lifting motor, real-time position information of the glass and weight information of the glass during glass lifting; determining actual resistance during glass lifting according to the real-time torque information, the real-time position information and the weight information; if the actual resistance is less than or equal to a first preset resistance, adjusting the output torque of the glass lifting motor to a normal output torque range; if the actual resistance is greater than the first preset resistance and less than or equal to a second preset resistance, adjusting the output torque of the glass lifting motor to a maximum allowable torque; wherein the maximum allowable torque is greater than the torque upper limit of the normal output torque range; and the second preset resistance is greater than the first preset resistance. The scheme can dynamically adjust the output torque of the glass lifting motor to match different working conditions during glass lifting, and realize the balance between safety, reliability and lifting efficiency.

Description

Technical Field

[0001] This invention relates to the field of vehicle body control technology, and in particular to a control method for raising and lowering windows, a control system for raising and lowering vehicle windows, and a vehicle. Background Technology

[0002] Electric window regulator motors are one of the core components of automotive door opening and closing systems. Their operational stability, safety, and efficiency directly affect the vehicle's user experience, driving safety, and the lifespan of its parts.

[0003] Currently, the control methods for electric window lift motors mainly employ traditional fixed current threshold protection mode or constant voltage output control mode. The fixed current threshold protection mode presets a maximum operating current limit for the motor. When the motor's operating current exceeds this limit, the power is forcibly cut off to prevent overload. However, this method cannot recognize "normal high loads" (such as increased resistance due to glass icing or aging of the sealing strip), and is prone to misjudgment, mistakenly cutting off the power under normal high load conditions, causing the glass to fail to lift properly. Constant voltage motors always operate at a constant voltage. To avoid the risk of overload under extreme conditions, the maximum output torque of the motor is usually limited to a lower level, resulting in slow window lifting speed and low lifting efficiency under normal operating conditions, affecting the user experience.

[0004] Therefore, there is an urgent need for a control method that can dynamically adjust the output torque of the electric window lift motor to achieve a balance between safety, reliability and lifting efficiency, and to meet the complex operating conditions of car door window lifting. Summary of the Invention

[0005] This invention provides a control method for raising and lowering windows, a control system for raising and lowering vehicle windows, and a vehicle. It can dynamically adjust the output torque of the electric window raising motor to match different working conditions during window raising and lowering, thereby achieving a balance between safety, reliability, and raising and lowering efficiency.

[0006] According to one aspect of the present invention, a control method for raising and lowering a glass is provided, comprising: acquiring real-time torque information of a glass raising motor, real-time position information of the glass, and weight information of the glass during glass raising and lowering; The actual resistance during the glass lifting and lowering is determined based on the real-time torque information, the real-time position information, and the weight information. If the actual resistance is less than or equal to the first preset resistance, the output torque of the window lifting motor is adjusted to the normal output torque range. If the actual resistance is greater than the first preset resistance and less than or equal to the second preset resistance, then the output torque of the window lifting motor is adjusted to the maximum allowable torque; wherein the maximum allowable torque is greater than the upper limit of the normal output torque range; and the second preset resistance is greater than the first preset resistance.

[0007] Optionally, the control method for raising and lowering the glass further includes: If the actual resistance is greater than the second preset resistance, the glass lifting motor is controlled to stop and reverse to the preset angle.

[0008] Optionally, the control method for raising and lowering the glass further includes: If the difference between the real-time location information and the target location information of the glass is greater than zero and less than or equal to a preset threshold, the output torque is reduced to the target output torque until the difference is zero, at which point the glass lifting motor is controlled to stop working; wherein the target output torque is less than the lower limit of the normal output torque range.

[0009] Optionally, before acquiring the real-time torque information of the glass lifting motor, the real-time position information of the glass, and the weight information of the glass during glass lifting, the method further includes: Acquire ambient temperature, initial glass position information, and target position information; The initial torque is determined based on the difference between the target position information and the initial position information, and the ambient temperature, and the glass lifting motor is controlled to start lifting and lowering the glass according to the initial torque.

[0010] Optionally, the initial torque is negatively correlated with the ambient temperature; the initial torque is positively correlated with the difference between the target position information and the initial position information.

[0011] Optionally, the control method for raising and lowering the glass further includes: The center of gravity position information and adhesive strip aging information of the glass are obtained at preset time intervals. Based on the center of gravity position information and the aging information of the rubber strip, the first preset resistance, the second preset resistance, the normal output torque range, and the maximum allowable torque are updated.

[0012] Optionally, adjusting the output torque of the window lifting motor to the maximum permissible torque includes: The output torque is linearly increased to the maximum allowable torque according to a preset adjustment step size; Adjusting the output torque of the window lift motor to the normal output torque range includes: The output torque is linearly increased to the normal output torque range according to the preset adjustment step size.

[0013] Optionally, the glass lifting motor is connected to a torque sensor, a position sensor, and a motor drive module, respectively; the torque sensor is used to detect the output torque of the glass lifting motor; the position sensor is used to detect the position information of the glass; and the motor drive module is used to drive the glass lifting motor to work. Before acquiring ambient temperature, initial glass position information, and target position information, the following steps are also included: Perform self-tests on the glass lifting motor, the torque sensor, the position sensor, and the motor drive module; When the glass lifting motor, the torque sensor, the position sensor, and the motor drive module are all functioning normally, the steps of acquiring ambient temperature, initial position information of the glass, and target position information are executed.

[0014] According to a second invention of the present invention, a vehicle glass lifting control system is also provided, comprising: a glass lifting motor, a motor drive module, a torque sensor, a position sensor, a control module, and a vehicle body controller; The torque sensor is connected to the control module; the torque sensor is mounted on the output shaft of the window lifting motor and is used to detect the output torque of the window lifting motor. The position sensor is connected to the control module; the position sensor is disposed on the glass and is used to detect the position information of the glass. The glass lifting motor is connected to the control module via the motor drive module; The body controller is connected to the control module; the body controller is used to acquire ambient temperature, the weight information of the glass, and the center of gravity position information of the glass. The control module is used to control the glass lifting motor to operate by the motor drive module according to the glass lifting control method according to any one of the first aspects of the present invention.

[0015] According to a third aspect of the present invention, a vehicle is also provided, including the vehicle glass lifting control system described in the second aspect of the present invention.

[0016] The glass lifting control method provided in this invention determines the actual resistance during the glass lifting process by acquiring real-time torque of the glass lifting motor, glass position information, and weight information. By comparing the actual resistance with a first preset resistance and a second preset resistance, the glass lifting conditions can be differentiated. When the actual resistance is less than the first preset resistance, it indicates that the glass lifting process is within the normal resistance range. In this case, the actual output torque of the glass lifting motor can be increased to the normal output torque range to achieve rapid and stable glass lifting. When the actual resistance is greater than the first preset resistance but less than or equal to the second preset resistance, it indicates that the resistance encountered during the glass lifting process has increased to a certain extent but is still within a tolerable range. In this case, the output torque of the glass lifting motor can be increased to the maximum allowable torque to counteract abnormal friction or momentary jamming, allowing the glass to continue lifting. The solution provided by this invention can adaptively adjust the output torque of the glass lifting motor in real time according to the resistance state, ensuring the continuity and efficiency of the glass lifting process, avoiding lifting failure and motor damage caused by continuous motor operation due to resistance changes, and achieving a balance between safety, reliability, and lifting efficiency.

[0017] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic flowchart illustrating a glass lifting control method provided in an embodiment of the present invention; Figure 2 A flowchart illustrating another control method for raising and lowering a glass window provided in an embodiment of the present invention; Figure 3 A flowchart illustrating another control method for raising and lowering a glass window provided in an embodiment of the present invention; Figure 4 A flowchart illustrating another control method for raising and lowering a glass window provided in an embodiment of the present invention; Figure 5 A schematic diagram of a vehicle window lifting control system provided in an embodiment of the present invention; Figure 6This is a flowchart illustrating a method for controlling the raising and lowering of vehicle windows, as provided in an embodiment of the present invention. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0022] This invention provides a method for controlling the raising and lowering of windows, which can be applied to vehicles to control the raising and lowering of vehicle windows. Figure 1 This is a flowchart illustrating a control method for raising and lowering a glass window according to an embodiment of the present invention. Figure 1 As shown, the method includes: S110. Obtain real-time torque information of the glass lifting motor, real-time position information of the glass, and weight information of the glass during glass lifting.

[0023] Specifically, real-time torque information refers to the magnitude and direction of the output torque on the output shaft of the window regulator motor during the window lifting process. Real-time torque information can be obtained through a torque sensor, which can be installed on the output shaft of the window regulator motor to improve detection accuracy. Real-time torque information can also be obtained through calculations using the operating parameters and characteristic parameters of the window regulator motor, or through other methods. Real-time glass position information can be acquired through a position sensor, which can be any one or a combination of Hall effect sensors, encoders, or limit switches, used to indicate the current lifting height of the glass. The weight information of the glass can be a pre-calibrated value or obtained by the vehicle control system based on the vehicle model configuration and glass type.

[0024] S120: Determine the actual resistance during glass lifting based on real-time torque information, real-time position information, and weight information.

[0025] Specifically, the resistance during glass lifting mainly comes from the glass's own weight, the friction between the glass and the guide rail during lifting, and additional resistance caused by potential jamming. As the glass moves between its lowest and highest positions, the contact length between the glass edge and the guide rail gradually increases, resulting in a larger contact area. Therefore, the friction between the glass and the guide rail increases with increasing position. Based on this, under normal lifting conditions, the relationship between the glass position and the output torque of the glass lifting motor can be calibrated for glass of different weights, forming a baseline torque-position relationship model for glass of corresponding weight. The resistance during normal lifting can then be calculated based on this model. This model reflects the variation of the glass lifting motor's output torque under conditions without abnormal jamming, where only gravity and normal friction act. However, when abnormal jamming or obstruction occurs during glass lifting, the output torque of the glass lifting motor will increase to some extent. Therefore, in actual operation, the collected real-time glass position, weight, and real-time glass lifting motor torque information can be compared with the calibrated baseline torque-position relationship model to calculate the actual resistance during glass lifting. The calibrated model of the relationship between the reference torque and the position can be obtained through factory calibration of the whole vehicle or through self-learning updates based on historical operating data.

[0026] S130. If the actual resistance is less than or equal to the first preset resistance, adjust the output torque of the window lift motor to the normal output torque range.

[0027] Specifically, the first preset resistance can be a threshold value representing the upper limit of normal resistance during the glass lifting process. The first preset resistance can be determined by calculating the resistance using a model relating reference torque and position and then calibrating it. When the actual resistance is less than or equal to the first preset resistance, it indicates that the current glass lifting process is within the normal operating range, meaning there is no significant jamming or abnormal increase in resistance. In this case, to ensure glass lifting efficiency, the output torque of the glass lifting motor can be controlled within the normal output torque range. The normal output torque range can be understood as the range of torque allowed to meet the requirements of normal and smooth glass lifting. The lower limit of the normal output torque range can be the minimum output torque required to ensure continuous, stable, and rapid glass lifting, which can be determined by calibrating parameters such as the target lifting speed during the glass lifting process. For example, the higher the target lifting speed, the larger the corresponding lower limit of the normal output torque range. The upper limit of the normal output torque range can be the torque required to overcome the maximum normal resistance. Controlling the glass lifting motor to operate within the normal output torque range under normal operating conditions allows for faster glass lifting speeds, thereby optimizing glass lifting efficiency and improving the user experience. For example, under normal operating conditions, the output torque of the window lift motor can be controlled to reach the upper limit of the normal output torque range in order to maximize the window lifting speed.

[0028] S140. If the actual resistance is greater than the first preset resistance and less than or equal to the second preset resistance, then adjust the output torque of the window lift motor to the maximum allowable torque.

[0029] Specifically, the second preset resistance can be a threshold value representing an abnormal but surmountable resistance during the glass lifting process. The second preset resistance is greater than the first preset resistance. The operating conditions corresponding to the second preset resistance could include situations such as increased friction due to aging of the guide rail rubber strips, or icing at the connection between the glass and the window frame in low-temperature environments. When the actual resistance is greater than the first preset resistance but less than or equal to the second preset resistance, it indicates that the current glass lifting process is under a high-load condition, meaning there is a certain degree of abnormal resistance, but this resistance is still within the system's safe range and has not reached the dangerous level requiring immediate cessation. In this case, the output torque of the glass lifting motor is increased to the maximum permissible torque to overcome the resistance and achieve lifting. The maximum permissible torque can be understood as the maximum torque that the motor can output without damage to the glass lifting motor and its accessories; its value is higher than the upper limit of the normal output torque range. By increasing the output torque, the driving force of the glass lifting motor can be enhanced, enabling the glass to overcome temporary large resistance and continue the lifting action, thereby avoiding lifting failure or jamming due to resistance fluctuations and improving the user experience. The maximum permissible torque can be preset according to parameters such as motor rated parameters, structural strength, and safety limits. Adjusting the torque to the maximum allowable torque under heavy load conditions ensures smooth lifting and lowering while avoiding unnecessary power waste, thus solving the problem of sacrificing lifting efficiency for safety in traditional fixed output modes. Furthermore, if the actual resistance suddenly drops below the first preset resistance under heavy load conditions—for example, if a foreign object in the glass lifting path detaches or a temporary obstruction disappears—it indicates that the abnormal load condition has been resolved. At this point, based on real-time resistance changes, the output torque of the glass lifting motor can be restored to the normal operating torque range, and the glass movement can continue to be controlled at the normal lifting speed until the lifting process is complete, thereby avoiding a decrease in lifting efficiency due to continuous low-speed operation.

[0030] The glass lifting control method provided in this invention determines the actual resistance during the glass lifting process by acquiring real-time torque of the glass lifting motor, glass position information, and weight information. By comparing the actual resistance with a first preset resistance and a second preset resistance, the glass lifting conditions can be differentiated. When the actual resistance is less than the first preset resistance, the glass lifting process is within the normal resistance range. In this case, the actual output torque of the glass lifting motor can be increased to the normal output torque range to achieve rapid and stable glass lifting. When the actual resistance is greater than the first preset resistance but less than or equal to the second preset resistance, it indicates that the resistance encountered during the glass lifting process has increased to a certain extent but is still within a tolerable range. In this case, the output torque of the glass lifting motor can be increased to the maximum allowable torque to offset the effects of abnormal friction or momentary jamming, allowing the glass to continue lifting. The solution provided by this invention can adaptively adjust the output torque of the glass lifting motor in real time according to the resistance state, ensuring the continuity and efficiency of the glass lifting process, avoiding continuous high-load operation of the glass lifting motor due to abnormal resistance, which could lead to lifting failure, thus achieving a balance between safety, reliability, and lifting efficiency.

[0031] Figure 2 This is a flowchart illustrating another control method for raising and lowering a window provided in an embodiment of the present invention. Optionally, based on the above embodiments, see... Figure 2 The method includes: S210. Obtain real-time torque information of the glass lifting motor, real-time position information of the glass, and weight information of the glass during glass lifting.

[0032] S220: Determine the actual resistance during window lifting based on real-time torque information, real-time position information, and weight information.

[0033] S230. If the actual resistance is less than or equal to the first preset resistance, the output torque of the window lift motor will be adjusted to the normal output torque range.

[0034] S240. If the actual resistance is greater than the first preset resistance and less than or equal to the second preset resistance, then adjust the output torque of the window lift motor to the maximum allowable torque.

[0035] S250. If the actual resistance is greater than the second preset resistance, control the window lifting motor to stop and reverse to the preset angle.

[0036] Specifically, the second preset resistance can be an upper limit threshold representing an abnormal but surmountable resistance during the glass lifting process. When the actual resistance exceeds the second preset resistance, it indicates that the current glass lifting process is in a dangerous condition, meaning that resistance exceeding normal friction and controllable abnormal ranges has occurred. This resistance could correspond to severe jamming, obstruction by foreign objects, or other mechanical abnormalities. It could also correspond to a sudden increase in resistance caused by a human finger, clothing, or other flexible object entering the glass clamping area, or other conditions where forward drive cannot continue. In this situation, maintaining the original output torque could lead to a continuous increase in clamping force, causing pressure or damage to the object within the clamping area, and potentially triggering motor stall or transmission overload. Therefore, the glass lifting motor is immediately stopped from forward drive and switched to reverse control, causing the glass to retract in the opposite direction to a preset angle. The preset angle can be a pre-set safe release position used to reduce tension in the clamping area or release pressure on the clamped object, thereby achieving rapid release from abnormal clamping conditions. For example, the preset angle can be the degree corresponding to a 5-10mm reverse movement of the controlled glass. The preset angle may vary depending on the type of window lift motor. Existing window lift motors using a fixed current threshold protection mode may experience response lag under abnormal obstruction (normal high load conditions), leading to prolonged overload operation, failure to prevent pinching, and potential burnt windings, damage to gears, and other components. The above control method can promptly interrupt the continuous clamping process upon detecting a sudden change in abnormal resistance, and reduce the risk of clamping through a reverse yielding action, improving system safety and anti-pinch reliability, and providing a safe boundary condition for subsequent re-control of the lift. Furthermore, this solution is unaffected by voltage fluctuations, temperature changes, and mechanical wear, accurately identifying obstructions and normal high loads, avoiding problems such as missed anti-pinch measures and damage caused by prolonged overload operation, thus improving passenger safety.

[0037] The technical solution provided by this invention divides the operating conditions of glass lifting into three categories: normal, heavy load, and dangerous, each corresponding to different torque control logic. This ensures lifting efficiency under normal operating conditions, smooth lifting under heavy load conditions, and rapid anti-pinch protection under dangerous conditions, thus balancing lifting efficiency and safety protection.

[0038] Based on the above embodiments, the method may optionally further include: if the difference between the real-time position information and the target position information of the glass is greater than zero and less than or equal to a preset threshold, then reduce the output torque to the target output torque until the difference is zero, and then control the glass lifting motor to stop working.

[0039] Specifically, the difference between the real-time position information and the target position information can be used to represent the remaining travel distance between the current position and the target position of the glass. When the difference is greater than zero and less than or equal to a preset threshold, it indicates that the glass has entered the final travel stage of approaching the target position. For example, the preset threshold can be 5-10mm. In this stage, if the glass is still driven according to the normal output torque range, the glass lifting motor will continuously provide a large driving force, which may easily cause the glass to experience impact or overshoot when approaching the target position, resulting in mechanical vibration and affecting the service life of the guide rail, limit structure, or other components. Furthermore, the target output torque being less than the lower limit of the normal output torque range can be used to reduce the driving force, allowing the glass to approach the target position smoothly at a lower speed, thereby achieving end-stage deceleration control. As the glass gradually approaches the target position, the difference gradually decreases until it reaches zero, at which point the glass lifting motor is controlled to stop working. For example, after the glass reaches the target position, the glass lifting motor can be controlled to enter a sleep state to reduce power consumption. By using the above methods, the impact caused by motion inertia can be effectively reduced when the glass approaches the target position, improving the smoothness and control accuracy of the glass lifting process. At the same time, it reduces the collision loss between the glass and the limiter, extends the overall service life of the glass lifting motor and its accessories, and reduces user maintenance costs and vehicle after-sales risks.

[0040] Figure 3 This is a flowchart illustrating a control method for raising and lowering a glass window according to an embodiment of the present invention. Optionally, based on the above embodiment, see... Figure 3 The method includes: S310: Obtain ambient temperature, initial position information of the glass, and target position information.

[0041] Specifically, ambient temperature can be obtained through temperature sensors installed inside or outside the vehicle to indicate the environmental conditions under which the window is currently raised / lowered. The initial position information of the window refers to its position before the window is raised / lowered, while the target position information refers to the target position corresponding to the user's control command, such as fully open, fully closed, or an intermediate position. By obtaining the initial and target position information, the direction and range of motion of the window during this raising / lowering operation can be determined. Simultaneously, changes in ambient temperature affect the frictional characteristics between the glass and the guide rail. For example, in low-temperature environments, the sealing strip may harden or freeze, potentially increasing initial resistance. Therefore, the ambient temperature, the initial position information, and the target position information of the window provide a basis for determining the subsequent initial torque.

[0042] S320: Determine the initial torque based on the difference between the target position information and the initial position information, and the ambient temperature, and control the glass lifting motor to start lifting the glass according to the initial torque.

[0043] Specifically, the difference between the target position information and the initial position information can be used to represent the stroke length and movement trend of the glass during this lifting and lowering process. A larger difference indicates a longer lifting and lowering stroke, and a relatively greater overall resistance to overcome during the start-up phase; a smaller difference corresponds to a shorter stroke. Meanwhile, ambient temperature affects the frictional characteristics of the glass during lifting and lowering. For example, in low-temperature environments, the rigidity of the guide rails and seals increases or icing occurs, leading to increased starting resistance. Based on these reasons, a correlation can be established between the initial torque, the difference, and the ambient temperature. The initial torque is positively correlated with the difference between the target position information and the initial position information, meaning the greater the stroke, the greater the required initial torque; the initial torque is negatively correlated with the ambient temperature, meaning the lower the ambient temperature, the greater the required initial torque. In actual control, the glass lifting motor drives the glass to lift and lower according to the initial torque, ensuring that the glass outputs a driving force matching the current load state during the start-up phase. This avoids starting delays or failures due to insufficient initial torque, while also avoiding impact problems caused by excessive torque, thus improving the smoothness and reliability of the start-up process.

[0044] S330: Obtain real-time torque information of the glass lifting motor, real-time position information of the glass, and weight information of the glass during glass lifting.

[0045] S340: Determine the actual resistance during window lifting based on real-time torque information, real-time position information, and weight information.

[0046] S350. If the actual resistance is less than or equal to the first preset resistance, the output torque of the window lift motor will be adjusted to the normal output torque range.

[0047] S360. If the actual resistance is greater than the first preset resistance and less than or equal to the second preset resistance, then adjust the output torque of the window lift motor to the maximum allowable torque.

[0048] Figure 4 This is a flowchart illustrating another control method for raising and lowering a window provided in an embodiment of the present invention. Optionally, based on the above embodiments, see... Figure 4 The method also includes: S410: Obtain the center of gravity position information of the glass and the aging information of the sealant at preset intervals.

[0049] Specifically, the preset time can be a periodic time interval during vehicle operation, such as triggered by ignition count, cumulative running time, preset mileage, or other self-defined methods. The center of gravity position information of the glass can be used to represent the positional state of the glass's overall mass distribution relative to the mounting structure. During long-term vehicle use, due to vehicle vibration, road impacts, or other factors, the glass may experience slight displacement relative to the guide rail, especially cumulative displacement towards the rear of the vehicle, resulting in changes in its stress distribution. The aging information of the sealing strips can be used to represent the performance condition of the sealing strips used to clamp the glass in the glass guide rail. With increased usage time, the sealing strips may exhibit aging phenomena such as hardening, wear, or decreased elasticity, thereby altering the contact pressure and frictional characteristics between the glass and the guide rail. Sealing strip aging information can be evaluated or estimated through historical usage time, ambient temperature records, trends in lifting resistance changes, or maintenance inspection results. By periodically acquiring center of gravity position information and sealing strip aging information, the structural displacement and changes in frictional characteristics of the window lifting system during use can be reflected.

[0050] S420. Based on the center of gravity position information and rubber strip aging information, update the first preset resistance, the second preset resistance, the normal output torque range, and the maximum allowable torque.

[0051] Specifically, changes in the glass's center of gravity affect the stress state during its lifting process. For example, when the center of gravity shifts, the forces on both sides of the guide rail become uneven, potentially increasing local friction. Simultaneously, aging of the rubber strip alters the clamping force and coefficient of friction, causing an overall shift in the resistance level under normal operating conditions. Therefore, the original preset resistance, second preset resistance, and corresponding normal output torque range and maximum allowable torque, obtained from initial calibration, may no longer be applicable to current actual conditions. Based on the center of gravity position information and rubber strip aging information, these parameters can be adaptively corrected. For instance, when a shift in the center of gravity towards the rear of the vehicle or increased rubber strip aging is detected, the first and second preset resistances can be appropriately increased to match the new normal resistance range. Simultaneously, the normal output torque range and maximum allowable torque can be adjusted accordingly to ensure the window lift motor's output capacity remains consistent with the current actual load characteristics. This update mechanism allows the window lift control parameters to dynamically adjust according to the vehicle's operating conditions, avoiding misjudgments or improper control due to structural changes or component aging, thereby improving the lifespan and control accuracy of the window lift system and ensuring long-term reliability.

[0052] The technical solution provided by this invention is adaptable to different vehicle models (passenger cars and commercial vehicles) and different specifications of window lift motors, exhibiting high versatility. Furthermore, after parameter calibration via a self-learning function, extensive adaptation and debugging for different vehicle models is unnecessary, reducing R&D and production costs and facilitating mass production and application.

[0053] Optionally, based on the above embodiments, adjusting the output torque of the window lift motor to the maximum allowable torque includes: controlling the output torque to linearly increase to the maximum allowable torque according to a preset adjustment step size; adjusting the output torque of the window lift motor to the normal output torque range includes: controlling the output torque to linearly increase to the normal output torque range according to a preset adjustment step size.

[0054] Specifically, controlling the output torque to increase linearly according to a preset adjustment step size can be understood as follows: during torque adjustment, the current output torque is not switched directly to the target torque all at once. Instead, it is gradually increased according to a preset adjustment step size, so that the output torque gradually approaches the target torque in an approximately linear manner. The preset adjustment step size can be the increment of torque per unit time. For example, a fixed amplitude of torque output is added in each control cycle, causing the output torque of the window lift motor to continuously increase according to the preset adjustment step size until the maximum allowable torque or the normal output torque range is reached. Using this torque adjustment method based on a preset adjustment step size avoids the impact problems caused by instantaneous torque changes, reduces the instantaneous peak force between the glass and the guide rail, thereby reducing mechanical vibration and operating noise, improving the smoothness of the control process, and preventing over-drive due to sudden torque increases.

[0055] Optionally, in one embodiment, the window lift motor is connected to a torque sensor, a position sensor, and a motor drive module, respectively; the torque sensor is used to detect the output torque of the window lift motor; the position sensor is used to detect the position information of the glass; and the motor drive module is used to drive the window lift motor to work.

[0056] Optionally, based on the above embodiments, before acquiring the ambient temperature, the initial position information of the glass, and the target position information, the method includes: S610 performs a self-test on the window lift motor, torque sensor, position sensor, and motor drive module.

[0057] Specifically, the self-test step can be used to confirm the working status of key actuators and detection components such as the window lift motor, torque sensor, position sensor, and motor drive module before the window lift operation is executed. For example, for the window lift motor, the presence of faults can be determined by detecting its power-on response, current and voltage changes, and checking for abnormalities such as jamming, stalling, or open circuits; for the torque sensor, its detection function can be determined by reading whether its output signal is within a reasonable range and whether there are signal interruptions; for the position sensor, its ability to accurately reflect the current position of the glass can be determined by detecting the continuity and trend of its output position signal; and for the motor drive module, its normal driving capability can be determined by detecting its drive signal output status, power supply status, or communication status. Through this self-test process, potential hardware faults or signal anomalies can be identified before the window lift operation, thereby avoiding direct execution of window lift control under abnormal conditions.

[0058] S620. When the window lifting motor, torque sensor, position sensor and motor drive module are all functioning normally, execute the steps of acquiring ambient temperature, initial position information of the glass and target position information.

[0059] Specifically, after completing the self-test step, if the window lift motor, torque sensor, position sensor, and motor drive module are all in normal working condition, it indicates that the current system has the basic conditions to execute window lift control. At this point, the steps of acquiring ambient temperature, initial position information, and target position information of the glass are then performed for subsequent determination of initial torque and lift control. If any abnormality is detected in any component during the self-test, the subsequent control process can be terminated, or a fault handling mode can be entered. For example, motor output can be limited, lift operation can be prohibited, or a fault prompt message can be output, thereby avoiding control failure or safety risks caused by inaccurate detection data or abnormal drive.

[0060] This invention also provides a vehicle window lifting control system. Figure 5 This is a schematic diagram of a vehicle window lifting control system provided in an embodiment of the present invention. See also... Figure 5The vehicle window lifting control system includes: a window lifting motor 10, a motor drive module 20, a torque sensor 30, a position sensor 40, a control module 50, and a body controller 60. The torque sensor 30 is connected to the control module 50; it is mounted on the output shaft of the window lifting motor 10 and is used to detect the output torque of the motor. The position sensor 40 is connected to the control module 50; it is mounted on the glass and is used to detect the glass's position information. The window lifting motor 10 is connected to the control module 50 via the motor drive module 20. The body controller 60 is connected to the control module 50; it is used to acquire ambient temperature, glass weight information, and the glass's center of gravity position information, and transmit lifting control commands to the control module 50. The control module 50 is used to control the motor drive module 20 to drive the window lifting motor 10 according to the window lifting control method provided in any of the above embodiments.

[0061] Specifically, the window regulator motor 10 can be, for example, a DC permanent magnet window regulator motor. The torque sensor 30 can be, for example, a non-contact magnetoelectric torque sensor with a response time ≤10ms and a measurement accuracy better than ±2%, capable of accurately capturing minute resistance changes (such as slight obstruction by foreign objects or thin ice resistance) and avoiding signal distortion. The installation position of the torque sensor 30 can be adjusted according to the structure of the window regulator motor 10 of different vehicle models, preferably installed at the end of the output shaft of the window regulator motor 10 close to the transmission mechanism to ensure detection accuracy. The position sensor 40 can be, for example, a Hall effect glass position sensor, which can be set in the slide rail between the vehicle glass and the window frame to detect the position information of the glass. The control module 50 can be a microprocessor unit or other type of controller. Passengers can send window lifting commands to the body controller 60 through the door lifting switch 01. The body controller 60 provides the window lifting command to the control module, and then the control module 50 controls the window regulator motor 10, the motor drive module 20, the torque sensor 30, and the position sensor 40 to complete the initialization self-test. After passing the self-test, the control module 50 drives the motor drive module 20 to control the window lifting motor 10 to lift and lower according to the initial torque, based on the passenger's lifting command. Then, the control module 50 obtains the real-time torque information of the window lifting motor through the torque sensor 30, the real-time position information of the glass through the position sensor 40, and the weight information of the glass through the body controller 60. Based on this information, the control module 50 calculates the actual resistance during glass lifting and lowering, and determines whether the glass lifting is in a normal operating condition, a high-load operating condition, or a dangerous operating condition. For different operating conditions, the control module 50 controls the motor drive module 20 to drive the window lifting motor 10 to adjust the output torque. When the difference between the real-time position information of the glass and the target position information of the glass is greater than zero and less than or equal to a preset threshold, the control module 50 controls the motor drive module 20 to drive the window lifting motor 10 to reduce the output torque to the target output torque, until the difference is zero, and then controls the window lifting motor to stop working.

[0062] The vehicle window lifting control system provided in this embodiment can be directly adapted to existing automotive window lifting motors and control systems without requiring significant modifications to the motor, lifting mechanism, and other components. This results in low modification costs and facilitates mass production and application.

[0063] The following specific embodiment illustrates the operation flow of the system, but it is not intended to limit the invention. Figure 6 This is a flowchart illustrating a vehicle window lifting control method provided in an embodiment of the present invention. Based on the above embodiment, see... Figure 5 and Figure 6 The method includes: S1. System Initialization: After the vehicle is ignited and powered on, the control module 50 starts a self-test program to test the torque sensor 30, position sensor 40, and motor drive module 20 to confirm that each component is fault-free and the signal transmission is normal. At the same time, it obtains the current ambient temperature (e.g., -5℃, low temperature condition) from the body controller 60, calls the preset low temperature initial torque (e.g., 0.8N•m), and the system enters standby mode.

[0064] S2, Lifting Command Received: When the user presses the front door glass lift switch, the control module 50 receives the lifting command, confirms that the lifting direction is upward and the target position is the glass fully closed state.

[0065] S3. Initial torque output: The control module 50 outputs an initial torque of 0.8 N•m based on the current ambient temperature of -5℃ and the initial position of the glass (half-open state, 50% stroke). This torque is then used by the motor drive module 20 to start the glass lifting motor 10, causing the glass to begin to rise.

[0066] S4. Real-time Load Detection: Torque sensor 30 acquires the torque signal from the output shaft of the window lifting motor 10 in real time. The torque sensor has a response time of 8ms and a measurement accuracy of ±1.5%, enabling precise capture of resistance changes. The control module 50 has an adjustment cycle of 10ms to ensure real-time torque adjustment. Torque sensor 30 transmits a digital signal to control module 50 every 10ms; position sensor 40 acquires the glass lifting stroke in real time and transmits it synchronously to control module 50, providing real-time feedback on the glass position (e.g., 50%→55%→60%).

[0067] S5. Resistance Calculation and Operating Condition Judgment: Based on the torque signal and glass position signal, and combined with the preset glass weight for this vehicle model (e.g., 2.5 kg), and considering the low ambient temperature and thin ice at the glass edge, the control module 50 calculates the actual resistance value for the glass rising to be 1.5 N•m. For example, if the first preset resistance is 1.2 N•m and the second preset resistance is 2.0 N•m, the actual resistance value of 1.5 N•m falls within the range of "first preset resistance < actual resistance ≤ second preset resistance," and is therefore determined to be a high-load operating condition.

[0068] S6. Continuous Torque Adjustment: Based on the actual resistance of 1.5 N•m, the control module 50 linearly adjusts the output torque of the glass lifting motor 10 through an adaptive algorithm, gradually increasing it to 1.8 N•m (maximum allowable torque) to ensure that the glass can overcome the resistance of thin ice and rise smoothly. At the same time, the torque signal is continuously monitored. When the ice melts and the actual resistance drops to 1.1 N•m (below the first preset resistance), the control module automatically increases the torque to 1.5 N•m (within the normal output torque range, for example, the upper limit of the normal output torque range) to accelerate the glass rising speed.

[0069] S7. End deceleration and stop: When the position sensor 40 detects that the glass is 8mm away from the fully closed position, the control module 50 automatically reduces the output torque of the glass lifting motor 10 to 0.5N•m (target output torque) to slow down the rising speed; when the glass reaches the fully closed position, the position sensor 40 sends a limit signal, the control module 50 immediately shuts down the motor drive module 20, stops the torque output, and the system enters a sleep state.

[0070] S8. Hazardous working condition test: If a foreign object (such as a finger) gets stuck between the glass and the door frame during the glass lifting process, the torque sensor 30 detects that the actual resistance suddenly increases to 2.2 N•m (exceeding the second preset resistance). The control module immediately cuts off the power to the glass lifting motor 10 and controls the glass lifting motor 10 to reverse 8 mm to release the foreign object and achieve anti-pinch protection. After the foreign object is removed, the user presses the lift switch again and the system returns to normal operation.

[0071] After testing, the control method can effectively avoid motor overload under low temperature freezing conditions, improve the window lifting efficiency by 30% compared with the traditional method, and the anti-pinch response time is ≤50ms, which meets the automotive safety standards.

[0072] This invention also provides a vehicle including the vehicle window lifting control system provided in the above embodiments, which has the same beneficial effects as the above embodiments, and will not be repeated here.

[0073] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0074] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for controlling the lifting of a glass window, characterized in that, include: The real-time torque information of the glass lifting motor, the real-time position information of the glass, and the weight information of the glass are obtained during the glass lifting process. The actual resistance during the glass lifting and lowering is determined based on the real-time torque information, the real-time position information, and the weight information. If the actual resistance is less than or equal to the first preset resistance, the output torque of the window lifting motor is adjusted to the normal output torque range. If the actual resistance is greater than the first preset resistance and less than or equal to the second preset resistance, then the output torque of the window lifting motor is adjusted to the maximum allowable torque; wherein the maximum allowable torque is greater than the upper limit of the normal output torque range; The second preset resistance is greater than the first preset resistance.

2. The control method for glass lifting according to claim 1, characterized in that, Also includes: If the actual resistance is greater than the second preset resistance, the glass lifting motor is controlled to stop and reverse to the preset angle.

3. The control method for raising and lowering the glass according to claim 1, characterized in that, Also includes: If the difference between the real-time location information and the target location information of the glass is greater than zero and less than or equal to a preset threshold, the output torque is reduced to the target output torque until the difference is zero, at which point the glass lifting motor is controlled to stop working; wherein the target output torque is less than the lower limit of the normal output torque range.

4. The control method for raising and lowering the glass according to claim 1, characterized in that, Before acquiring the real-time torque information of the window lifting motor, the real-time position information of the glass, and the weight information of the glass during window lifting, the process also includes: Acquire ambient temperature, initial glass position information, and target position information; The initial torque is determined based on the difference between the target position information and the initial position information, and the ambient temperature, and the glass lifting motor is controlled to start lifting and lowering the glass according to the initial torque.

5. The glass lifting control method according to claim 4, characterized in that, The initial torque is negatively correlated with the ambient temperature; the initial torque is positively correlated with the difference between the target position information and the initial position information.

6. The control method for raising and lowering a glass window according to claim 1, characterized in that, Also includes: The center of gravity position information and adhesive strip aging information of the glass are obtained at preset time intervals. Based on the center of gravity position information and the aging information of the rubber strip, the first preset resistance, the second preset resistance, the normal output torque range, and the maximum allowable torque are updated.

7. The control method for raising and lowering a glass window according to claim 1, characterized in that, Adjusting the output torque of the window lift motor to the maximum permissible torque includes: The output torque is linearly increased to the maximum allowable torque according to a preset adjustment step size; Adjusting the output torque of the window lift motor to the normal output torque range includes: The output torque is linearly increased to the normal output torque range according to the preset adjustment step size.

8. The control method for raising and lowering the glass according to claim 4, characterized in that, The glass lifting motor is connected to a torque sensor, a position sensor, and a motor drive module, respectively; the torque sensor is used to detect the output torque of the glass lifting motor; the position sensor is used to detect the position information of the glass. The motor drive module is used to drive the glass lifting motor to work; Before acquiring ambient temperature, initial glass position information, and target position information, the following steps are also included: Perform self-tests on the glass lifting motor, the torque sensor, the position sensor, and the motor drive module; When the glass lifting motor, the torque sensor, the position sensor, and the motor drive module are all functioning normally, the steps of acquiring ambient temperature, initial position information of the glass, and target position information are executed.

9. A vehicle window lifting control system, characterized in that, include: Window lift motor, motor drive module, torque sensor, position sensor, control module, and body controller; The torque sensor is connected to the control module; the torque sensor is mounted on the output shaft of the window lifting motor and is used to detect the output torque of the window lifting motor. The position sensor is connected to the control module; the position sensor is disposed on the glass and is used to detect the position information of the glass. The glass lifting motor is connected to the control module via the motor drive module; The body controller is connected to the control module; the body controller is used to acquire ambient temperature, the weight information of the glass, and the center of gravity position information of the glass. The control module is used to control the glass lifting motor to work via the motor drive module according to the glass lifting control method according to any one of claims 1-8.

10. A vehicle, characterized in that, Including the vehicle window lifting control system as described in claim 9.

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