Hall and ripple integrated detection method and system based on vehicle body control platform

Abstract

The invention relates to the technical field of automobile control, in particular to a Hall and ripple integrated detection method and system based on an automobile body control platform. The Hall and ripple integrated detection method based on the vehicle body control platform comprises the following steps: S1, respectively acquiring a Hall signal and a ripple current signal of a motor when the motor runs; s2, first operation information of the motor is obtained based on the Hall signal, and second operation information of the motor is obtained based on the ripple current signal; s3, calculating a first difference value weight based on the first operation information, and calculating a second difference value weight based on the second operation information; s4, comparing the first difference value weight with the second difference value weight, and taking the operation information corresponding to the smaller difference value weight as the real-time operation information of the motor; and S5, the real-time operation information serves as control input of the motor, the working state of the motor is determined based on the control input and second real-time operation information obtained subsequently, and according to the detection method, motor operation can be better controlled, and the error rate of the motor is reduced.

Description

Technical Field

[0001] This invention relates to the field of automotive control technology, and specifically to a Hall effect and ripple integrated detection method and system based on a vehicle body control platform. Background Technology

[0002] In the field of automotive control technology, the methods used in the market for controlling the operation of motors often involve using a single Hall signal collected by Hall elements or detecting and analyzing the ripple of the current to identify the motor's operating speed, position, and other status information, and then controlling the motor's operation.

[0003] In related technologies, the Hall effect detection and control system for motors involves adding Hall effect sensors near the motor. When the motor is running, these sensors detect Hall signals, and by analyzing the collected Hall pulse widths and the number of Hall sensors, information such as motor speed and position is identified, thereby controlling the motor's operation. The ripple detection and control system for motors adds a current detection loop and an amplification circuit to the controller. By analyzing the ripple characteristics of the amplified ripple current signal, information such as motor speed and position is identified. While the Hall effect detection and control system is relatively accurate in identifying relatively stable motor operating states, it suffers from lower accuracy and is prone to errors in identifying unstable operating states. Similarly, while the ripple detection and control system is relatively accurate in identifying unstable motor operating states, it has lower accuracy and is prone to errors in identifying the operating state of the motor after long-term wear and tear. Summary of the Invention

[0004] The technical problem to be solved by this invention is to provide a Hall effect and ripple integrated detection method and system based on a vehicle body control platform. The Hall effect and ripple integrated detection system based on a vehicle body control platform is used to implement the Hall effect and ripple integrated detection method based on a vehicle body control platform. By integrating motor ripple detection and control technology into the motor Hall effect detection and control system, the accuracy of analyzing and identifying motor state information during stable and unstable operation can be increased. By integrating motor Hall effect detection and control technology into the motor ripple detection and control system, the accuracy of analyzing and identifying motor state information after unstable operation or long-term durable operation can be increased, thereby better controlling motor operation and reducing motor error rate.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: In a first aspect, the present invention provides a Hall effect and ripple integrated detection method based on a vehicle body control platform, comprising the following steps: S1: When the motor is running, the first control module and the second control module respectively acquire the Hall signal and ripple current signal of the motor; S2: Control the first control module to obtain the first operating information of the motor based on the Hall signal, and control the second control module to obtain the second operating information of the motor based on the ripple current signal; S3: Control the first control module to calculate the first difference weight based on the first operating information, and control the second control module to calculate the second difference weight based on the second operating information; S4: Compare the first difference weight with the second difference weight, and take the operating information corresponding to the smaller difference weight as the real-time operating information of the motor; S5: Use real-time operating information as the control input for the motor, and determine the motor's operating status based on the control input and the subsequently acquired second real-time operating information.

[0006] By employing the above technical solution, during motor operation, the first and second operating information of the motor can be obtained by detecting the Hall signal and ripple current signal, respectively. Then, a first difference weight is calculated based on the first operating information, and a second difference weight is calculated based on the second operating information. This allows for the acquisition of the actual deviation in motor operation detection based on the Hall signal and the actual deviation based on the ripple current signal. Comparing the first and second difference weights determines which signal has the smaller detection deviation, and the operating information corresponding to the smaller difference weight is used as the real-time operating information of the motor. Using this real-time operating information as input control for the motor enables the next step of motor operation. These steps are continuously repeated, thereby determining the motor's operating state through the control input from the previous step and the subsequent second real-time operating information, achieving real-time detection of the motor. This leads to better motor operation control and a reduced motor error rate.

[0007] During the above testing process, since motor ripple detection and Hall effect detection are integrated, regardless of whether the motor is running stably or unstablely, or after long-term durable operation, the appropriate testing method is selected by comparison during the detection of the motor's operating status, thus avoiding excessive deviation.

[0008] Optionally, the calculation of the first difference weight includes: firstly removing the maximum and minimum values ​​of the Hall pulse width to obtain the average Hall signal, and then comparing the average Hall signal with the real-time values ​​of the Hall pulse width collected at various times during motor operation to obtain the first difference weight.

[0009] By employing the above technical solution, eliminating the maximum and minimum values ​​of the Hall pulse width can improve the accuracy of the first difference weight. The first difference weight can be obtained by comparing the average Hall signal with the real-time value of the Hall pulse width.

[0010] Optionally, the calculation of the second difference weight includes: recording the peak value, trough value, full cycle and half cycle of the ripple current signal, and comparing the ripple current signal with the system standard signal of the motor to obtain the second difference weight.

[0011] By adopting the above technical solution, recording the various data of the ripple current signal and comparing the ripple current signal with the system standard signal of the motor, the second difference weight can be obtained.

[0012] Optionally, the real-time operating information includes: motor speed information, torque information, and position information during motor operation.

[0013] By adopting the above technical solutions, the speed, torque, and position information can effectively reflect the motor's operating status. By determining the speed, torque, and position information, the motor's operation can be better controlled and the motor's error rate can be reduced.

[0014] Optionally, the Hall and ripple integrated detection method based on the vehicle body control platform further includes: presetting a start-up condition before the motor runs, wherein the start-up condition is: after the motor starts and stabilizes, the Hall signal and the ripple current signal are compared with the standard signal of the motor respectively; if any difference weight is found to be greater than 50%, the corresponding detection system is not started, wherein the detection system includes a Hall detection system and a ripple detection system.

[0015] By adopting the above technical solution, if the corresponding detection system has too large a deviation, not activating the corresponding detection system can effectively ensure that the motor operates without errors.

[0016] Secondly, the present invention provides a Hall effect and ripple integrated detection device based on a vehicle body control platform, used to implement the Hall effect and ripple integrated detection method based on a vehicle body control platform described in the first aspect, comprising: a main controller, a Hall effect detection system, and a ripple detection system, wherein the Hall effect detection system includes a Hall effect motor magnetic ring, a Hall effect chip, and a first control module connected in sequence, and the ripple detection system includes a capacitor, a signal amplifier, and a second control module connected in sequence; the main controller is communicatively connected to the motor, the first control module, and the second controller module respectively, the Hall effect motor magnetic ring is mounted on the motor, and the capacitor is connected to the motor.

[0017] By adopting the above technical solution, when the motor is running, it generates a Hall signal. The Hall motor magnetic ring can acquire the Hall signal, and the Hall chip, after obtaining the Hall signal, can send the converted electrical signal to the first control module. When the motor is running, the charging and discharging of the capacitor can smooth the output voltage and filter it. Due to the internal resistance of the capacitor, the current output by the secondary rectifier generates a voltage drop across the capacitor's internal resistance, which is then superimposed on the capacitor voltage, thereby generating a ripple whose voltage peak fluctuates slightly up and down with the cycle. This ripple is then amplified by the amplifier and sent to the second control module. The main controller can realize information interaction between the first controller, the second controller, and the motor. Based on the motor's operating status, the detection status of the Hall detection system, and the ripple detection system, it can select the appropriate detection system to detect the motor in real time, ensuring better control of the motor's operation and reducing the motor's error rate during stable operation, unstable operation, or long-term endurance operation.

[0018] In summary, the present invention has at least the following beneficial technical effects: 1. By integrating motor ripple detection and control technology into the motor Hall effect detection and control system, the accuracy of analyzing and identifying the motor's state information during stable and unstable operation is increased, thereby better controlling motor operation and reducing the error rate.

[0019] 2. By integrating motor Hall effect detection and control technology into the motor ripple detection and control system, the accuracy of analyzing and identifying the motor's status information after unstable operation or long-term durable operation is increased, thereby better controlling motor operation and reducing the error rate.

[0020] 3. After integrating the Hall effect detection system and the ripple detection system, corresponding start-up conditions and priority strategies were added to reduce conflicts between systems and improve detection efficiency. Attached Figure Description

[0021] Figure 1 This is a flowchart of the Hall effect and ripple integrated detection method based on the vehicle body control platform in an embodiment of the present invention; Figure 2 This is a schematic block diagram illustrating the communication principle of the Hall effect and ripple integrated detection system based on the vehicle body control platform in an embodiment of the present invention.

[0022] Explanation of reference numerals in the attached diagram: 1. Main controller; 2. Hall effect detection system; 3. Ripple detection system; 4. Hall effect motor magnetic ring; 5. Hall effect chip; 6. First control module; 7. Capacitor; 8. Signal amplifier; 9. Second control module. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0024] The terminology used in the following embodiments of the present invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and appended claims of the present invention, the singular expressions “a,” “an,” “the,” “the,” “the,” and “this” are intended to include the plural expressions as well, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in the present invention refers to and includes any or all possible combinations of one or more of the listed items. The term “exemplary” means “serving as an example, embodiment, or illustration,” and any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments. The terms “first” and “second” are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as “first” or “second” may explicitly or implicitly include one or more of that feature, and in the description of embodiments of the present invention, unless otherwise stated, “a plurality” means two or more.

[0025] This invention provides a Hall effect and ripple integrated detection method based on a vehicle body control platform.

[0026] refer to Figure 1 The Hall effect and ripple integrated detection method based on the vehicle body control platform includes the following steps: S1: When the motor is running, the first control module 6 and the second control module 9 acquire the Hall signal and ripple current signal of the motor respectively.

[0027] The first control module 6 is the control module in the Hall effect detection system 2, and the second control module 9 is the control module in the ripple detection system 3. The Hall effect detection system 2 can sense the Hall signal generated when the motor is running, and the ripple detection system 3 can acquire the ripple current signal generated when the motor is running.

[0028] When the car's motor is working, the main controller 1 controls the first control module 6 to acquire the Hall signal of the motor and causes the first control module 6 to store the Hall data corresponding to the Hall signal in the memory; at the same time, the main controller 1 controls the second control module 9 to acquire the ripple current signal of the motor and causes the first control module 6 to store the ripple data corresponding to the ripple current signal in the memory.

[0029] Among them, the motor is a Hall motor, which can be a motor used to control the opening or closing of the car windows, a motor used to control the opening or closing of the trunk, etc.

[0030] S2: Control the first control module 6 to obtain the first operating information of the motor based on the Hall signal, and control the second control module 9 to obtain the second operating information of the motor based on the ripple current signal.

[0031] Both the first and second operating information include motor speed, torque, and position information. It should be understood that while these information are present at this stage, they are not yet processed.

[0032] After the first control module 6 and the second control module 9 acquire the Hall signal and the ripple current signal respectively, the main controller 1 can control the first control module 6 to analyze and identify the Hall pulse width and the number of Hall signals to obtain the first operating information of the motor; at the same time, the main controller 1 can also control the second control module 9 to detect and analyze the ripple characteristics of the ripple current signal to obtain the second operating information of the motor.

[0033] S3: Control the first control module 6 to calculate the first difference weight based on the first operating information, and control the second control module 9 to calculate the second difference weight based on the second operating information.

[0034] After the first control module 6 and the second control module 9 obtain the first operating information and the second operating information of the motor respectively, the main controller 1 controls the first control module 6 to calculate the first difference weight based on the first operating information; at the same time, the main controller 1 controls the second control module 9 to calculate the second difference weight based on the second operating information.

[0035] Specifically, in the calculation of the first difference weight, the maximum and minimum values ​​of the Hall pulse width within this period are first removed to obtain the average Hall signal. Then, the average Hall signal is compared with the real-time values ​​of the Hall pulse width collected at various moments during motor operation to obtain the first difference weight, which is the deviation from the target value. The target value is the expected Hall pulse width target value set during motor operation, thus obtaining the motor's speed, torque, and position information. In the calculation of the second difference weight, information such as the peak value, trough value, full cycle, and half cycle of the ripple current signal is recorded and compared with the system standard signal of the motor stored in the main controller 1 to obtain the second difference weight, thereby obtaining the deviation from the target value and obtaining the motor's speed, torque, and position information.

[0036] S4: Compare the first difference weight with the second difference weight, and take the operating information corresponding to the smaller difference weight as the real-time operating information of the motor.

[0037] The main controller 1 acquires the first and second difference weights and compares them to determine which is smaller. A larger difference weight indicates a more significant motor deviation. The operating information corresponding to the smaller difference weight is then used as the motor's real-time operating information; that is, the detection system with the smaller deviation weight is prioritized. By identifying the difference weights of the two detection systems, the probability of possible identification errors can be detected, and the relatively accurate data corresponding to the real-time operating information can be selected. Specifically, when the information indicated by the first control module 6 and the second control module 9 is inconsistent—for example, the Hall sensor identifies a speed of 1000 r / min, while the ripple sensor identifies a speed of 500 r / min—this inconsistency (error greater than 5%) indicates a conflict, requiring determination of which information is more accurate.

[0038] S5: Use real-time operating information as the control input for the motor, and determine the motor's operating status based on the control input and the subsequently acquired second real-time operating information.

[0039] The main controller 1 uses real-time operating information as the control input for the motor, allowing the motor to operate according to the control input. During motor operation, the second real-time operating information is acquired again using steps S1-S4 described above. Then, based on the control input and the subsequent second real-time operating information, the motor's operating state is determined, thereby achieving real-time adjustment of motor operation, better controlling motor operation, and reducing motor error rate. Specifically, the identified speed, torque, and position information are used as inputs for subsequent motor anti-pinch and speed adjustment, effectively preventing people from being trapped by components such as car windows and the trunk.

[0040] The Hall effect and ripple integrated detection method based on the vehicle body control platform also includes: presetting startup conditions before motor operation to determine which detection system to use to detect motor operation. Specifically, the startup conditions are: after the motor starts and stabilizes, the ripple current signal and the Hall effect signal are compared with their corresponding standard signals.

[0041] This invention also provides a Hall effect and ripple integrated detection system based on a vehicle body control platform.

[0042] refer to Figure 2 The Hall and ripple integrated detection system based on the vehicle body control platform includes: a main controller 1, a Hall detection system 2 and a ripple detection system 3, wherein the main controller 1 is communicatively connected to the Hall detection system 2 and the ripple detection system 3 respectively.

[0043] The Hall effect detection system 2 includes a Hall effect motor magnetic ring 4, a Hall effect chip 5, and a first control module 6. The Hall effect motor magnetic ring 4 is mounted on the motor, and the Hall effect chip 5 is electrically connected to the Hall effect motor magnetic ring 4. The first control module 6 is communicatively connected to the Hall effect chip 5, the motor, and the main controller 1. The first control module 6 is a processor. When the motor is running, it generates Hall effect signals. The Hall effect motor magnetic ring 4 acquires these signals, and the Hall effect chip 5, after obtaining the Hall effect signals, sends the converted electrical signals to the first control module 6.

[0044] The ripple detection system 3 includes a capacitor 7, a signal amplifier 8, and a second control module 9. The capacitor 7 is electrically connected to the motor, the input of the signal amplifier 8 is electrically connected to the capacitor 7, and the output of the signal amplifier 8 is communicatively connected to the second control module 9. The second control module 9 is communicatively connected to the main controller 1. The second control module 9 is a processor. When the motor is running, the charging and discharging of the capacitor 7 smooths the output voltage for filtering. Due to the internal resistance of the capacitor 7, the current output from the secondary rectifier generates a voltage drop across the internal resistance of the capacitor 7, which is then superimposed on the voltage of the capacitor 7, resulting in a ripple whose peak voltage fluctuates slightly up and down with the cycle. This ripple is then amplified by the amplifier and sent to the second control module 9.

[0045] It should be understood that the first control module 6, the second control module 9, and the main controller 1 can all communicate with the memory to store various data.

[0046] The specific examples of the methods provided in the above embodiments are applicable to the Hall and ripple integrated detection system based on the vehicle body control platform in this embodiment. Through the foregoing detailed description of the Hall and ripple integrated detection method based on the vehicle body control platform, those skilled in the art can clearly understand the implementation method of the Hall and ripple integrated detection system based on the vehicle body control platform in this embodiment. For the sake of brevity, it will not be described in detail here.

[0047] The above description of the embodiments is only used to provide a detailed introduction to the technical solution of the present invention. However, the description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention, and should not be construed as a limitation of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be covered within the protection scope of the present invention.

Claims

1. A Hall effect and ripple integrated detection method based on a vehicle body control platform, characterized in that, Includes the following steps: S1: When the motor is running, control the first control module (6) and the second control module (9) to obtain the Hall signal and ripple current signal of the motor respectively; S2: Control the first control module (6) to obtain the first operating information of the motor based on the Hall signal, and control the second control module (9) to obtain the second operating information of the motor based on the ripple current signal; S3: Control the first control module (6) to calculate the first difference weight based on the first operating information, and control the second control module (9) to calculate the second difference weight based on the second operating information; S4: Compare the first difference weight with the second difference weight, and take the operating information corresponding to the smaller difference weight as the real-time operating information of the motor; S5: Use real-time operating information as the control input for the motor, and determine the motor's operating status based on the control input and the subsequently acquired second real-time operating information.

2. The Hall effect and ripple integrated detection method based on a vehicle body control platform as described in claim 1, characterized in that, The calculation of the first difference weight includes: firstly removing the maximum and minimum values ​​of the Hall pulse width to obtain the average Hall signal, and then comparing the average Hall signal with the real-time values ​​of the Hall pulse width collected at various times during motor operation to obtain the first difference weight.

3. The Hall effect and ripple integrated detection method based on a vehicle body control platform as described in claim 1, characterized in that, The calculation of the second difference weight includes: recording the peak value, trough value, full cycle and half cycle of the ripple current signal, and comparing the ripple current signal with the system standard signal of the motor to obtain the second difference weight.

4. The Hall effect and ripple integrated detection method based on a vehicle body control platform as described in claim 1, characterized in that, The real-time operating information includes: motor speed, torque, and position information during operation.

5. The Hall effect and ripple integrated detection method based on a vehicle body control platform as described in any one of claims 1-4, characterized in that, Also includes: Before the motor runs, a preset start-up condition is set. The start-up condition is: after the motor starts and stabilizes, the Hall signal and the ripple current signal are compared with the standard signal of the motor. The detection system includes a Hall detection system (2) and a ripple detection system (3).

6. A Hall effect and ripple integrated detection device based on a vehicle body control platform, used to implement the Hall effect and ripple integrated detection method based on a vehicle body control platform as described in any one of claims 1-5, characterized in that, include: The system comprises a main controller (1), a Hall effect detection system (2), and a ripple detection system (3). The Hall effect detection system (2) includes a Hall effect motor magnetic ring (4), a Hall effect chip (5), and a first control module (6) connected in sequence. The ripple detection system (3) includes a capacitor (7), a signal amplifier (8), and a second control module (9) connected in sequence. The main controller (1) is connected in communication with the motor, the first control module (6), and the second controller module. The Hall effect motor magnetic ring (4) is installed on the motor, and the capacitor (7) is connected to the motor.

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