Abstract: A diagnostic method for a torsional vibration damper in a drive train of a vehicle may include the steps of providing a drive train having a drive unit (e.g., an internal combustion engine) for generating a driving torque, a drive shaft (e.g., a crankshaft) coupled to the drive unit for transmitting the driving torque to an output shaft, and a torsional vibration damper connected to the drive shaft for damping torsional vibrations of the drive shaft, capturing a reference vibration signal of the drive shaft in a reference state, capturing an operating vibration signal of the drive shaft in an operating state deviating from the reference state, and comparing the reference vibration signal to the operating vibration signal.

Abstract: A system and method for actively controlling a structure is disclosed. At least one non-optimal event is identified in real-time based on at least one real-time elasticity measurement, if an event threshold exceeds a predetermined value. In response to an active control command, a control mechanism is then activated in real-time to compensate for the non-optimal event.

Abstract: The invention relates to a method and a system for predicting maintenance operations on a current aircraft engine, comprising: processing means to compare a set of failure models (M1, . . . , Mn) adapted to said current engine to select a relevant failure model (Mi) with a failure age (T0) defining the age of said engine at the time of the failure; processing means to associate decision rules (R) about the workscope on said current engine with said relevant failure model (Mi), as a function of a set of parameters (P1, P2, Pi) related to said current engine; and processing means to determine the required maintenance workscope (Wf) to be applied to said current engine, as a function of said decision rules.

Abstract: The failure sign detection apparatus includes an abnormality detector to make a comparison between a failure detection parameter of a vehicle device mounted on a vehicle and a predetermined abnormality detection threshold, and make a determination whether there is an abnormality in the vehicle device based on a result of the comparison, a failure sign evaluation index calculator to calculate a failure sign evaluation index for evaluating a sign of failure of the vehicle device based on an abnormality duration period over which the detected abnormality continues and a parameter threshold difference indicative of a difference between the abnormality detection threshold and the failure detection parameter, and a failure sign detector to detect a sign of failure of the vehicle device based on the failure sign evaluation index calculated by the failure sign evaluation index.

Abstract: A diagnostic system configured to test the performance of a vehicle component may include a processor configured to process test information from the vehicle component and control the vehicle component to be tested. The system may also include a memory configured to store the test information of the vehicle component and software that operates the vehicle component and a capacitive element configured to supply power to perform the testing of the vehicle component, wherein the memory and the capacitive element are in communication with the processor.

Abstract: In a method for monitoring the operation of a vacuum pump in a brake system, the vacuum pump is operated between an activation pressure and a deactivation pressure to generate a vacuum, the evacuation period between the activation pressure and the deactivation pressure being measured and compared with a reference period. An error signal is generated if the evacuation period exceeds the reference period.

Abstract: A drive system for a hybrid hydraulic vehicle. The drive system includes an engine, a hydraulic pump driven by the engine, a converter coupled to the pump, a drive train coupled to the converter a first hydraulic pathway coupling the hydraulic pump to the converter, a second hydraulic pathway coupling the hydraulic pump to the converter, a reservoir positioned in the second hydraulic pathway, an accumulator positioned in the first hydraulic pathway, a pressure sensor configured to sense the pressure of hydraulic fluid in the accumulator, and a controller. The controller is configured to receive an indication of the pressure of the hydraulic fluid in the accumulator from the pressure sensor, and to adjust a low pressure level threshold of the pressure of hydraulic fluid in the accumulator based on the operation of the vehicle such that the pressure of the hydraulic fluid in the accumulator reaches a predetermined target pressure when the vehicle brakes.

Abstract: A method for judging the drivability of vehicles including acquiring drivability-relevant physical data during the driving operation of the vehicle; checking the data for the presence of trigger conditions which indicate the existence of specific driving states; if a specific driving state exists, calculating at least one local evaluation, which is a judgment of an evaluation criterion relevant for the driving state; and calculating an overall evaluation for the acquired driving state. An increase in precision may be achieved with repeated occurrence of identical driving states, a correction variable is calculated for the evaluations, which is a function of the differences in the behavior of the vehicle upon identical driving states, and a corrected evaluation is calculated in which this correction variable is taken into consideration.

Abstract: The present disclosure is directed to a dragger. The dragger may have a plurality of sensors configured to be located adjacent a railroad track. Each of the plurality of sensors may be oriented at an angle relative to a horizontal plane. The dragger may also have a controller in communication with the plurality of sensors. The controller may be configured to receive signals from the plurality of sensors, determine a parameter based on at least one of the received signals, and detect a fault condition when the parameter exceeds a threshold.

Abstract: The invention relates to a method for monitoring the crane safety of a crane with a variable support base and with a monitoring unit, wherein several safety criteria are monitored during crane operation, in that, for each criterion which is dependent on at least one parameter relating to the crane configuration and/or crane movement during crane operation, an admissible specific limit value is calculated during crane operation, and monitored for compliance. In addition, the invention relates to a method for operating a crane with a monitoring unit which calculates an admissible bearing load dependent on one or more modifiable parameters, during the operation of the crane, and a sensor system which detects the current modifiable parameters during crane operation, and makes them available to the monitoring unit, wherein one or more sensor values are modified before the calculation of the admissible bearing load, in order to determine the admissible bearing load for one or more future parameters.

Abstract: A sensor module generates a momentary tire pressure signal, and a transmitting module transmits the momentary pressure information. A management module receives and processes the information and includes a first predetermined pressure value corresponding to a higher speed for the vehicle, and a second predetermined pressure value corresponding to a lower speed, the first predetermined pressure value being greater than the second predetermined pressure value.

Abstract: A system for use in monitoring, measuring, recording, computing and transmitting the oxygen levels and identification of oxygen contamination within an aircraft telescopic landing gear strut. An oxygen sensor is mounted in relation to each of the landing gear struts as to monitor, recognize, measure and record the identification of oxygen within the telescopic landing gear struts. The amount of oxygen within each landing gear strut is measured and recorded and downloaded to the responsible aircraft maintenance department. By detecting the amount of oxygen in a strut, steps can be taken to purge the gas from the strut to minimize corrosion of strut components and to prevent internal combustion of the gas and oil in the strut.

Abstract: In an embodiment, a towbarless airplane tug configured for receiving a landing gear of an airplane and towing the airplane thereby at an actual speed is disclosed. The towbarless airplane tug includes a chassis configured for receiving thereon at least a portion of the landing gear, and a propulsion arrangement configured to move the towbarless airplane tug in a direction along a trajectory. The towbarless airplane tug further includes a controller configured to compare between the actual speed of the towbarless airplane tug, when towing the airplane, and a predetermined desired speed thereof, and to direct the propulsion arrangement to maintain the actual speed of the towbarless airplane tug if: the actual speed is lower than the desired speed, and the actual speed was maintained within a predefined speed range during a predefined period that preceded the comparing.

Abstract: A method for continuously and simultaneously monitoring a plurality of operatively connected mechanical and/or hydraulic drive components provided in at least one drive train in a large hydraulic excavator by virtue of a vibration sensor being positioned in the region of just a single one of the operatively connected drive components, the vibration sensor being connected by a line to an evaluation unit which contains prescribable conspicuousness patterns for all the operatively connected drive components, and the collective measurement signal from all the operatively connected drive components being aligned in conditioned form, as an input frequency, with a limit value—associated with the respective individual drive component—from the conspicuousness pattern.

Abstract: A diagnostic method for a torsional vibration damper in a drive train of a vehicle may include the steps of providing a drive train having a drive unit (e.g., an internal combustion engine) for generating a driving torque, a drive shaft (e.g., a crankshaft) coupled to the drive unit for transmitting the driving torque to an output shaft, and a torsional vibration damper connected to the drive shaft for damping torsional vibrations of the drive shaft, capturing a reference vibration signal of the drive shaft in a reference state, capturing an operating vibration signal of the drive shaft in an operating state deviating from the reference state, and comparing the reference vibration signal to the operating vibration signal.

Abstract: An automated start/stop system for a vehicle comprises an auto-stop module, a diagnostic module, and an auto-start module. The auto-stop module selectively initiates an auto-stop event and shuts down an engine while the vehicle is running. The diagnostic module selectively diagnoses a fault in a clutch pedal position sensor of the vehicle. The auto-start module, while the vehicle is running and the engine is shut down, selectively initiates an auto-start event after the fault has been diagnosed when current drawn by a starter motor is less than a predetermined maximum starting current.

Abstract: A controller for determining whether a previously-detected vehicle wheel speed sensor malfunction still exists. The controller includes an electronic, non-volatile memory, and an electronic processing unit connected to the electronic, non-volatile memory. The electronic processing module includes a malfunction monitoring module, a failure handling module, and a signal checking module. The malfunction monitoring module monitors the operation of at least one wheel speed sensor and generates a fault signal when the at least one sensor malfunctions. The failure handling module causes drive cycle information and the fault information to be stored in the electronic, non-volatile memory. The signal checking module performs a signal check on information from the at least one wheel speed sensor. A tell-tale indicator is deactivated and/or a vehicle control system resumes normal operation if the wheel speed sensor passes the signal check.

Abstract: A method of registering a vehicle with a call center of a telematics system may entail turning a key within a vehicle ignition to begin a call from a telematics control module within the vehicle to a server at a telematics call center, connecting the telematics control module within the vehicle to the server at the telematics service center, sending a health check request from the telematics control module within the vehicle to the server at the telematics service center; and receiving a health check confirmation in the telematics control module within the vehicle from the server at the telematics service center. The method may further entail inquiring if such a health check request request-confirmation was successful. The method may also include a call fail counter and a message fail counter to automatically re-initiate a health check request and a successful answer to such a request.

Abstract: A sensor module generates a momentary tire pressure signal, and a transmitting module transmits the momentary pressure information. A management module receives and processes the information and includes a first predetermined pressure value corresponding to a higher speed for the vehicle, and a second predetermined pressure value corresponding to a lower speed, the first predetermined pressure value being greater than the second predetermined pressure value.

Abstract: A method for fault recognition in an electric machine controlled by an inverter in a motor vehicle, in which the phase currents of the electric machine are ascertained, in particular ascertained by measuring, and a fault is recognized if at least one of the phase currents or a variable derived therefrom, exceeds a predefined upper threshold value, the upper threshold value being established as a function of operating parameters of the motor vehicle, in particular of the electric machine and/or of the inverter.

Abstract: A method for assigning a first motor vehicle to a second motor vehicle by exchanging electromagnetic signals. The electromagnetic signals are transmitted from the first motor vehicle in a predetermined temporal signal pattern and received by the second motor vehicle, where they are compared as to whether the received electromagnetic signals correspond to a signal pattern stored in the second motor vehicle. The first motor vehicle then is assigned as a function of the comparison. This method is particularly suited to assigning trailers to a towing vehicle.

Abstract: An impact assessment system and method for determining emerging criticality in a complex system is provided. The impact assessment system includes a component dependency model and an emergent criticality analyzer. The component dependency model describes the relationships between components in the system and their underlying dependency and criticality relationships. The impact assessment system receives component failure data from the complex system and uses the component dependency model and emergent criticality analyzer to determine the impact of the component failure on the criticality of remaining components in the system. The impact assessment system is thus able to determine how component failures in the complex system can impact the criticality of remaining components in the complex system and thus can assist in determining how those components may or may not be safely used in further operational activities.

Abstract: In a method for monitoring the operation of a vacuum pump in a brake system, the vacuum pump is operated between an activation pressure and a deactivation pressure to generate a vacuum, the evacuation period between the activation pressure and the deactivation pressure being measured and compared with a reference period. An error signal is generated if the evacuation period exceeds the reference period.

Abstract: A road vehicle (1) driver behavior analysis method, the analysis method including the steps of determining and memorizing the instantaneous position of the vehicle (1) expressed in geographic coordinates; determining and memorizing at least one dynamic characteristic characterizing motion of the vehicle (1); classifying a current road section just travelled by the vehicle (1); determining the space-dependent pattern of the dynamic characteristic along the current road section; determining a deviation between the space-dependent pattern of the dynamic characteristic along the current road section, and a space-dependent mean pattern or statistical distribution of the dynamic characteristic along the same or a similar road section and determined in previous runs of the vehicle (1); and identifying anomalous driver behavior if the absolute value of the deviation is above a given threshold.

Abstract: A method for detecting faults in an aircraft is disclosed. The method involves predicting at least one state of the aircraft and tuning at least one threshold value to tightly upper bound the size of a mismatch between the at least one predicted state and a corresponding actual state of the non-faulted aircraft. If the mismatch between the at least one predicted state and the corresponding actual state is greater than or equal to the at least one threshold value, the method indicates that at least one fault has been detected.

Abstract: A method for compensating for wheel speed and acceleration calculation errors comprising the steps of collecting a wheel speed signal, creating at least one compensation factor for the wheel speed signal, correlating each compensation factor with a rotational position of the wheel, modifying each compensation factor individually based on variations in calculations made from the information collected according to the rotational position of the wheel, and calculating wheel speed and acceleration using the at least one compensation factor applied according to the rotational position of the wheel from which the wheel speed signal is collected.

Abstract: An electropneumatic control arrangement for an automatic vehicle level control system, particularly of a commercial vehicle, includes at least; a solenoid valve unit having at least two electropneumatic solenoid valves, a compressed air inlet for infeeding compressed air, at least one compressed air connection for at least one air bellows and electrical control inputs, and an electronic control unit for actuating the solenoid valve unit. The electronic control unit comprises control outputs for electrically connecting to the control inputs of the solenoid valve unit. A plug connector is configured on the housing of the solenoid valve unit, in which the electrical control inputs are disposed, and a plug connector is provided on the housing of the electronic control unit, in which the control outputs are disposed. The plug connectors are mechanically plugged into each other.