摘要:
Method for the indirect tire pressure monitoring in which there are performed a rolling circumference analysis of the tires, in which rolling circumference analysis variables (ΔDIAG, ΔSIDE, ΔAXLE) are determined from actually found and learnt test variables describing the rotation of the wheels, and a frequency analysis of the natural oscillation behavior of at least one tire in which at least one frequency analysis variable (fk) is determined, in which case an evaluation of the rolling circumference analysis (A) and the natural frequency analysis (C) and a combined evaluation (B) of both methods of analysis is performed for warning indication of tire pressure loss.
摘要翻译:用于间接轮胎压力监测的方法,其中进行轮胎的滚动圆周分析,其中从实际找到的和学习的描述车轮旋转的测试变量确定滚动圆周分析变量(ΔDIAG,ΔSIDE,ΔAXLE),以及 确定至少一个频率分析变量(f k k k)的至少一个轮胎的自然振荡行为的频率分析,在这种情况下,滚动圆周分析(A)和 执行两种分析方法的自然频率分析(C)和综合评估(B),以确定轮胎压力损失的警告指示。
摘要:
Disclosed is a method for detection of a pressure loss in motor vehicle tires, which detects pressure loss on at least one vehicle tire based on several parameters, which are calculated from the rolling circumference of the tires. To this end, currently calculated parameters are compared with learnt values of the parameters.
摘要:
A method for the detection of the loading of a motor vehicle determines a loading condition of the vehicle using an analysis of the rotational behavior of the wheels. In a frequency analysis, it determines the natural frequencies of the wheels and looks at the amplitudes of the tire noise around those frequencies, which amplitudes change when the loading condition changes.
摘要:
Method for the indirect tire pressure monitoring in which an analysis of the natural oscillation behavior of at least one tire is performed and at least one pressure loss analysis variable (fFL, fFR, fRL, fRR), in particular a natural frequency, is determined, in which case a temperature compensation (4) of the pressure loss analysis variable (fFL, fFR, fRL, fRR) is performed, and in which case a tire temperature (Ttire) calculated by means of a temperature model (1) is used to determine a compensation quantity (2), in particular the quotient of variation of the pressure loss analysis variable and change in temperature.
摘要:
A method of detecting the tire sensitivity is described. The method includes determining the tire load Ftire of the vehicle, determining rotational speed information of the wheels, determining the tire sensitivity from the variation of the wheel rotational speed information depending on the variation of the tire load Ftire.
摘要:
The invention relates to an allocation method for a combined tire pressure monitoring system in motor vehicles, at least partly comprising wheels with pneumatic tires being equipped with pressure measuring modules, and each pressure measuring module records a tire inflation pressure or a value responsive to the tire inflation pressure and sends the latter to a receiving unit connected to an evaluating device by using a transmitting unit connected to the respective pressure measuring module together with an individual identification code (IDx) allocated to the respective pressure measuring module, and wherein signals about the rotational speed of each one wheel being sensed by means of wheel rotational speed sensors are transmitted to the evaluating device, and the installation positions y (VL: front left, VR: front right, HL: rear left, HR: rear right) of the wheels at the vehicle are known to the evaluating device, the wheels at the vehicle are known to the evaluating device, and the allocation method is performed by taking into consideration established probability values W_IDx_y, with the probability values W_IDx_y describing a frequency distribution which indicates how often pressure measuring modules with the identification codes IDx are detected as pertaining to the installation positions y. The invention further relates to a computer program product.
摘要:
A method for assisting a driver when parking or maneuvering a motor vehicle having at least one driver assistance system and a vehicle safety system is provided. The method includes the steps of detecting the surroundings and calculating a desired path in a calculation model, in which the differences in traveling distance between the individual wheels are monitored and determined by means of the vehicle safety system. The desired path is predicted in a calculation model by means of the differences in traveling distance, and detection of the surroundings is carried out by means of the driver assistance system. Furthermore, a system which is suitable to implement the method is provided.
摘要:
A method of determining absolute rolling circumferences of tires of a motor vehicle is disclosed, in which the absolute rolling circumferences (Ui) of the tires are determined by evaluating wheel rotational speed signals (ωi) and signals (dj) of at least one distance sensor, as well as a tire pressure check system.
摘要:
Method for automatically initializing an indirectly measuring tire pressure monitoring system which due a change of the rotational behavior of the vehicle wheels, in particular a change in the rolling circumference detects a deflation on the vehicle wheels by comparing learnt reference values with continuously detected new values (1), where furthermore a deflation on the vehicles wheels is detected by evaluating the natural frequency of the single vehicle wheels (3) and where an automatic initialization (5) is being executed, if the indirectly measuring tire pressure monitoring system during the movement of the vehicle after a standstill detects a deflation on a vehicle wheel compared with the situation before the standstill of the vehicle (2), whereas the evaluation of the natural frequency of the vehicle wheels does not detect a deflation on the same vehicle wheel (4).
摘要:
Disclosed is a method of indirect tire pressure monitoring. The method includes: learning test variables (DIAG, SIDE, AXLE), which describe the rotational movements of the wheels; determining rolling circumference differences (ΔDIAG, ΔSIDE, ΔAXLE) from actually determined test variables and the learnt test variables; learning at least one torsion natural frequency fp for at least one tire from the oscillation behavior of the individual tires; determining at least one shift of the torsion natural frequency Δfp from at least one actually determined torsion natural frequency and from the at least one learnt torsion natural frequency; and combining the rolling circumference differences (ΔDIAG, ΔSIDE, ΔAXLE) with the at least one shift of the torsion natural frequency fp in a joint warning strategy for detecting and warning of tire inflation pressure loss.