61 results about "Traction control system" patented technology

The invention relates to the technical field of traction force control systems, and provides a vehicle traction force control method which comprises the steps that vehicle dynamics information of a to-be-controlled vehicle is obtained, and the vehicle dynamics information is information describing the movement condition of the to-be-controlled vehicle; according to the vehicle dynamics information, a plurality of road adhesion coefficients are calculated through a plurality of adhesion coefficient calculation modes; fusing the plurality of pavement adhesion coefficients to obtain a comprehensive pavement adhesion coefficient; according to the vehicle dynamics information, multiple vehicle slip rates are calculated through multiple slip rate calculation modes; fusing the plurality of vehicle slip rates to obtain a comprehensive vehicle slip rate; and according to the comprehensive road adhesion coefficient and the comprehensive vehicle slip rate, the driving torque and the wheel braking force are calculated respectively, and the to-be-controlled vehicle is controlled based on the driving torque and the wheel braking force. According to the method, multiple influence factors are comprehensively considered through data fusion processing, and the control precision of the vehicle traction control system is improved.

A method for controlling a traction control system, ABS and actively controlled suspension. The method includes receiving an sensor output from at least one suspension sensor at a controller. The sensor output is indicative of a vertical height of the suspension relative to a road. The method determines an amplitude of vertical motion of the suspension over time using the received sensor output. The method identifies peaks and valleys in the amplitude of vertical motion of the suspension over time. The method determines that a rough road condition is present in response to a number of peaks and valleys exceeding a predefined threshold amplitude occurring more often than a predefined threshold frequency. An active suspension control of at least one wheel system of a vehicle is adapted in response to determining that a rough road condition is present.

Systems and methods for range extension with optimal traction control for multi e-axle based electrified vehicles are disclosed. The systems and methods optimize the operation of electric vehicles with multiple e-axles by generating optimal torque profiles based on look-ahead information about road conditions and optimally distributing torque between e-axles to minimize energy losses and extend driving range. The optimal traction control system operates in three main steps: first, generating an optimal torque profile based on look-ahead information about road grade and speed limits; and second, optimally allocating the requested torque between multiple e-axles to minimize energy losses. Third, dynamic drive control for electric machine to track optimal torque with minimized current. The optimal torque profile follows the trend of the road grade, providing more torque on uphill sections and less torque or even negative torque on downhill sections.

A vehicle includes a traction control system. The vehicle includes a controller configured to indicate a recommended speed on a display based on precipitation deposits, temperature, and speed limits, and to activate the traction control system before the vehicle intersects the vector. The indication and activation can be in response to an expected route of the vehicle intersecting an expected precipitation deposit of a weather prediction vector received from a source external to the vehicle.

The invention discloses a distributed traction control system, a control method and a vehicle, and belongs to the technical field of vehicles. The distributed traction control system comprises a driving motor and a motor control unit, and the motor control unit is connected with the driving motor; the motor control unit is configured to obtain a rotary change signal of the driving motor and a rotating speed signal of the wheel, determine a wheel speed difference value according to the rotating speed signal, and control the driving motor to adjust the output torque according to the wheel speed difference value and the rotary change signal when the wheel slips and the wheel speed difference value is abnormal so as to realize torque control; compared with a conventional traction control system, the distributed traction control system provided by the embodiment of the invention has the advantages that the time of signal transmission and feedback processes among an electronic braking system, a gateway, a whole vehicle control system and a motor control system can be shortened, the control time and the torque response time are effectively shortened, the dynamic response of wheels is controlled to be faster, and the reliability of the system is improved. The acceleration stability of the electric vehicle is effectively improved.

This utility model relates to a novel 110V battery traction control system for improving vehicle operating speed. It includes a traction converter, a first battery pack, a second battery pack, a connecting assembly, a charging assembly, a first switching component, and a second switching component. The first switching component has a first position connecting the first battery pack to the charging assembly and a second position connecting the first battery pack to the traction converter. The second switching component has a third position connecting the second battery pack to the charging assembly and a fourth position connecting the second battery pack to the traction converter. When the first switching component is in the second position and the second switching component is in the fourth position, the connecting assembly connects the first and second battery packs in series or parallel and then connects them to the traction converter. By using the connecting assembly, the first and second battery packs can be connected differently depending on the vehicle's operating conditions. When connected in parallel, it meets the requirements for slow vehicle operation in depots / parking lots; when connected in series, it allows for approximately double the vehicle's speed.

The invention relates to the technical field of shield tunneling machine detrapping, in particular to a shield tunneling machine detrapping body traction control system and method applying omnidirectional traction force, and the method comprises the steps: predicting the current propulsion resistance of a shield tunneling machine based on a long-short-term memory network according to historical shield construction data; traction devices are arranged at the front end, the rear end, the side faces and the bottom of the shield tunneling machine through distributed hydraulic cylinders, so that the shield tunneling machine has the omni-directional traction capacity, and free traction in the X-Y-Z three-axis direction is achieved. On the basis of the predicted propelling resistance, the predicted total propelling force is calculated by applying a force balance equation, the distribution proportion of the total oil cylinder propelling force and the total traction force is reasonably determined, the stability and efficiency of the propelling process are ensured, meanwhile, the posture deviation of the shield tunneling machine is obtained in real time, the total traction force is decomposed into traction force components in the X, Y and Z axial directions, and the stability and efficiency of the shield tunneling machine are improved. The pulling force of the traction device is accurately controlled, the abnormal posture is corrected in time, and the accuracy of the escape tunneling direction is guaranteed.

A vehicle includes a system and method of modeling and controlling tractive effort of a wheel of the vehicle. The system includes an observer, a predictive controller, and an online solver. The observer receives dynamic model parameters of the wheel and determines an estimate of a wheel speed and an uncertainty of the wheel speed using a nonlinear model of the wheel. The predictive controller determines an average gain and a differential gain from the estimate of the wheel speed and the uncertainty of the wheel speed. The online solver calculates a motor torque and a wheel brake torque for increasing tractive effort of the wheel on a road based on the average gain and the differential gain. The motor torque and the wheel brake torque are applied on the vehicle.

The invention discloses a double-tuned filter, which comprises a filter module and a switch, and is characterized in that the filter module comprises a first series group which is formed by connecting a first inductor, a first resistor and a second capacitor in series; the second series group is formed by connecting a second inductor and a second resistor in series; the first series group and the second series group are connected in parallel and then are connected in series with the first end of the first capacitor; and the second end of the first capacitor is connected in series with the first end of the switch. By introducing the double-tuned filter, harmonic suppression of characteristic frequency generated by an elevator frequency conversion system during constant-speed operation of an elevator is realized, so that torque pulsation generated during constant-speed operation of an elevator permanent magnet motor is effectively suppressed, vibration and noise during operation of the elevator are reduced, and comfort of the elevator is improved. The invention further discloses an elevator permanent magnet synchronous traction control system.

The invention relates to the technical field of automobile safety control, and discloses a distributed electric automobile traction control method and system and a program product, and the method comprises the following steps: after a traction control system is activated, judging the type of a road surface where the automobile is located; judging whether the vehicle responds to the target torque reduction value sent by the traction force control system according to the type of the road surface of the vehicle; if the road surface is a non-separated road surface, responding; if the pavement type is a separated pavement, entering the next step; judging whether the vehicle has an instability trend or not; if so, entering the next step; if not, the low attachment side responds to the target torque reduction value sent by the traction force control system, and the high attachment side responds to the torque required by the driver; and determining the bearable maximum torque difference of the vehicle, and adjusting the high attachment side torque of the vehicle according to the bearable maximum torque difference of the vehicle. The problem that in the prior art, collaborative optimization of the stability and acceleration of the vehicle is difficult to achieve when the vehicle tends to be unstable is solved.

An unmanned aircraft traction control system without a traction rod and an intelligent tractor relate to the technical fields of aircraft ground motion and man-machine coordination. The traction control system includes an aircraft light identification and induction module, a main sensing system module, an aircraft sound identification and induction module and a control module which are arranged on the tractor. When the tractor and an aircraft carry out a wheel holding operation, the aircraft light identification and induction module, the main sensing system module and the aircraft sound identification and induction module acquire a brightness signal of an aircraft nose landing gear taxi light, an aircraft turning signal, an aircraft resistance signal and an aircraft horn signal autonomously transmitted by a pilot. The purpose that a pilot autonomously controls the tractor to pull an aircraft to an aircraft parking position or a designated taxiway position is realized through the above signals.

An autonomous cruise control (ACC) system that implements a corrective action strategy based on driving conditions for a vehicle is provided. The ACC system includes a drive unit, vehicle sensors and a controller. The controller: receives at least signal from at least one vehicle sensor indicative of a driving condition; determines, based on the signal, whether the at least one signal satisfies a threshold indicative of an unsafe driving condition; and performs the corrective action strategy based on the determination that at least one signal satisfies an unsafe driving condition. The corrective action strategy comprises at least one of: (i) increasing a preset distance to a target vehicle; (ii) communicating a message to a human machine interface indicative of an unsafe driving condition; (iii) communicating a signal to vehicle brakes to initiate a braking event; and (iv) communicating a signal to a traction control system to alter an acceleration setting.

The invention provides an intelligent monitoring system for the slip rate of an unmanned tractor, and the system comprises a GNSS vehicle speed measurement unit which is used for collecting the ground speed of a vehicle and a system UTC time reference; the multi-node wheel rotating speed measuring unit comprises at least four wheel nodes and is used for collecting rotating speed data of each wheel; the GNSS vehicle speed measuring unit, the multi-node wheel rotating speed measuring unit and the central processing and display unit are connected through a star flash wireless network; and the central processing and display unit is configured to perform fusion processing on the received vehicle ground speed and system time reference data and the rotating speed data of each wheel, calculate the slip rate and interact with a whole tractor controller. The system can provide real-time and accurate four-wheel slip rate data for a traction control system of the unmanned tractor.

The invention relates to the technical field of automobile safety control, and discloses a traction control method and system for a vehicle water skiing state, and the traction control method for the vehicle water skiing state comprises the following steps: judging the water skiing type of a vehicle through a vehicle driving state signal and an internal signal of a vehicle traction control system; selecting features for each water skiing category from the vehicle driving state signal and the vehicle traction control system internal signal as training data, constructing a random forest model for each water skiing category, training the random forest model by using the training data, and predicting a reference vehicle speed based on the random forest model; calculating a reference axle speed according to the predicted reference vehicle speed, and calculating a target driving torque based on the reference axle speed; and calculating a reference wheel speed according to the predicted reference vehicle speed, and calculating a target braking torque based on the reference wheel speed. The problem that in the prior art, traction control is difficult to carry out accurately is solved.

An autonomous cruise control (ACC) system that implements a corrective action strategy based on driving conditions for a vehicle is provided. The ACC system includes a drive unit, vehicle sensors and a controller. The controller: receives at least signal from at least one vehicle sensor indicative of a driving condition; determines, based on the signal, whether the at least one signal satisfies a threshold indicative of an unsafe driving condition; and performs the corrective action strategy based on the determination that at least one signal satisfies an unsafe driving condition. The corrective action strategy comprises at least one of: (i) increasing a preset distance to a target vehicle; (ii) communicating a message to a human machine interface indicative of an unsafe driving condition; (iii) communicating a signal to vehicle brakes to initiate a braking event; and (iv) communicating a signal to a traction control system to alter an acceleration setting.

The application provides a starting control method and device, a storage medium, a vehicle controller and a vehicle. According to the starting control method, the road adhesion coefficient is obtained before the vehicle starts, the torque output of the vehicle when starting is controlled based on the road adhesion coefficient, and the torque output of the vehicle is controlled based on the traction control system when the slip rate of the vehicle reaches the trigger threshold of the traction control system, so that the situation that the slip rate of the vehicle is relatively high due to the excessively large torque increasing rate of the vehicle in the early stage of starting is avoided, and the acceleration performance of the vehicle is ensured.

The application provides a train emergency traction mode entering control method and a train. The train emergency traction mode entering control method is applied to a traction control system of the train. The method comprises the following steps: detecting whether current emergency traction information meets an emergency traction mode entering condition; when the current emergency traction information meets the emergency traction mode entering condition, controlling the train to enter the emergency traction mode; receiving a hard-wire signal sent by a driver controller, and performing corresponding operations according to the type of the hard-wire signal. The technical scheme of the application does not need to set an emergency traction device, reduces the production cost, avoids the problem that the vehicle cannot perform emergency traction when the emergency traction device is invalid or fails, and can effectively improve the applicability of the hard-wire control-based emergency traction circuit.

Aspects and embodiments of the disclosure relate to a method and control system (300) for controlling an internal combustion engine (200) of a vehicle (1). The method comprises: receiving a driver torque signal indicative of a driver torque demand; determining an air control signal (240) configured to control an active tappet (236) to deliver a first air charge to meet driver torque demand; receiving a torque intervention signal from a traction control system (608), the torque intervention signal indicative of a torque intervention by the traction control system (608); and outputting, in dependence on the torque intervention signal, a modified air control signal (242) configured to control the active tappet (236) to deliver a second air charge, the second air charge being a reduced air charge relative to the first air charge.

This application relates to a traction control system method, device, controller, and medium. The method includes: during the starting process of a target vehicle, acquiring the wheel speed, tire pressure, vehicle deceleration, and torque output of the target vehicle within the current control cycle; acquiring the fundamental oscillation frequency based on the tire pressure, vehicle deceleration, and road surface adhesion coefficient, and acquiring the wheel phase spectrum signal based on the wheel speed; acquiring the harmonic frequencies and harmonic energies of multiple harmonics based on the fundamental oscillation frequency and the wheel phase spectrum signal, and obtaining the harmonic energy ratio; if the harmonic energy ratio or the vehicle speed within the current control cycle meets preset conditions, acquiring the torque output control gain coefficient based on the harmonic energy ratio, vehicle speed, and target harmonic frequency; and generating a torque output control command based on the torque output control gain coefficient and torque output data. This method can improve the suppression effect of vibration divergence.

The invention provides a data synchronous recording method of a track traction control system, a data synchronous recording system of the track traction control system, a data synchronous recording device of the track traction control system and a computer readable storage medium. The data synchronous recording method of the track traction control system comprises the following steps: adjusting local clocks of a plurality of control units based on reference time so as to enable the local clocks of the plurality of control units to be consistent with the reference time; acquiring state data recorded by the plurality of control units; and based on the reference time and the data address of the state data, integrating the state data on the same time axis so as to synchronously record the state data recorded by the plurality of control units. According to the data synchronization recording method of the track traction control system, the cost of the control system can be reduced while large-capacity storage of the data is achieved, the control system is simplified, and the data synchronization requirement of the control system is met.

The traction machine with the traction force capable of being adjusted automatically comprises a traction machine body, and the traction machine body comprises a traction machine frame, an equipment bin installed on the traction machine frame, hydraulic supporting legs installed at the four ends of the traction machine frame, a traction beam installed at the front end of the traction machine frame and a traction mechanism installed on the front face of the traction machine frame. The traction control system has the functions of automatically detecting the current traction force and automatically adjusting the hydraulic system through the PLC, and waste caused by manual real-time monitoring is reduced.

The invention relates to a vehicle escape control method and device, computer equipment, a storage medium and a computer program product. The method comprises the steps that in response to a first escape control request triggered for a vehicle, all driving wheels of the vehicle are driven to rotate under the condition that a traction control system of the vehicle is turned off, and the wheel end speeds of all the driving wheels are obtained; comparing the wheel end speed of each driving wheel to obtain a wheel speed comparison result of each driving wheel; determining escape control information of the vehicle according to the wheel speed comparison result; the escape control information is used for indicating to adjust the suspension height of the corresponding wheel end of the vehicle; the adjusting mode information comprises increasing the height of the suspension to a first height or reducing the height of the suspension to a second height. By adopting the method, the escape control information can be autonomously determined, the suspension height of the corresponding wheel end of the vehicle can be automatically adjusted according to the escape control information, and the escape efficiency of the vehicle is effectively improved.

The application provides a high-speed maglev traction control system and a redundancy switching method thereof. The system comprises a traction control unit, at least one sensing unit, at least one high-frequency execution control unit, at least one medium-low-frequency execution control unit, at least one high-frequency actuator and at least one medium-low-frequency actuator. The traction control unit is used for sending high-frequency control instructions to the high-frequency execution control unit and sending medium-low-frequency control instructions to the medium-low-frequency execution control unit, and is also used for sending sensor data, high-frequency control instructions, medium-low-frequency control instructions, a pulse heartbeat signal of the traction control unit itself, high-frequency state information and medium-low-frequency state information to a traction controller without control sovereignty. The sensing unit is used for sending sensor data to the traction control unit. The high-frequency execution control unit is used for generating high-frequency execution instructions. The medium-low-frequency execution control unit is used for generating medium-low-frequency execution instructions. The high-frequency actuator is used for executing corresponding actions. The medium-low-frequency actuator is used for executing corresponding actions.

A method for mitigating dynamic traction events in a vehicle includes detecting a wheel speed increase indicative of a wheel slip event, determining a frequency of a rate of change of the wheel speed during the wheel slip event, comparing the frequency to a threshold, and changing a traction control parameter when the frequency satisfies the threshold. In at least some implementations, the traction control parameter is a setting of a traction control system relating to one or both of throttle reduction and braking.

System, comprehensive: a control device (106) programmed to indicate a low-traction operating mode (220) of a vehicle (102) when a longitudinal tracking accumulation exceeds a first threshold and a lateral reaction accumulation exceeds a second threshold, wherein the longitudinal tracking accumulation measures an activation count of a traction control system over time, and the lateral reaction accumulation measures a comparison of the vehicle yaw rate with a model-based prediction of the vehicle yaw rate desired by the driver.

The invention provides a torque control method of a vehicle, and belongs to the technical field of vehicle control, and the torque control method of the vehicle is characterized by comprising the following steps: in response to a low-adhesion road surface turning working condition, activating a stable torque control system on the basis of a traction force control system; converting an operation mode of the stable torque control system according to the vehicle state parameters so as to calculate a stable target torque according to a corresponding torque rule; the operation modes at least comprise a torque increasing mode, a torque reducing mode and a torque maintaining mode; weighting coefficients of the traction force control system and the stable torque control system are obtained through the monitoring parameters and a weighting coefficient function so that the fusion target torque of the vehicle can be obtained; the weighting coefficient function comprises a mapping relation between a monitoring parameter and a weighting coefficient; the monitoring parameters comprise a yaw velocity and a steering wheel angle. Through cooperative work of the stable torque control system and the traction force control system, torque control is optimized, and the situation that the torque is out of control due to excessive traction force is avoided.

The application discloses a control system of a distributed drive vehicle and a control method thereof, and comprises a whole vehicle integrated brake controller and a motor controller. The whole vehicle integrated brake controller is used for acquiring vehicle state signals, and the vehicle state signals at least include vehicle speed, wheel speed and motor rotating speed. The motor controller is in communication connection with the whole vehicle integrated brake controller, and the motor controller is integrated with a direct torque control module. The application realizes millisecond-level fast response by sinking the slip rate control to the inside of the motor controller through the direct torque control module, and solves the problems of long control period and slow response of the traditional traction control system.

A method for controlling a traction control system, ABS and actively controlled suspension. The method includes receiving an sensor output from at least one suspension sensor at a controller. The sensor output is indicative of a vertical height of the suspension relative to a road. The method determines an amplitude of vertical motion of the suspension over time using the received sensor output. The method identifies peaks and valleys in the amplitude of vertical motion of the suspension over time. The method determines that a rough road condition is present in response to a number of peaks and valleys exceeding a predefined threshold amplitude occurring more often than a predefined threshold frequency. An active suspension control of at least one wheel system of a vehicle is adapted in response to determining that a rough road condition is present.

The invention discloses a method and system for controlling the traction force of a vehicle body in a snowfield driving state, and the method comprises the steps that an ESC control module monitors the parameter information of the vehicle in the driving state through a sensor, and obtains a rolling resistance coefficient through calculation of a calculation module; the ESC control module judges the running state of the vehicle and judges whether the vehicle is in a deep snow running state or not, if yes, the road surface is calibrated, the slip rate offset is generated, and the ESC control module sends the slip rate offset to the traction force control module to adjust the output size of the traction force of the vehicle; through a calculation module, parameter information detected and collected by an ESC control module is calculated to obtain a rolling resistance coefficient, the slip rate offset is adjusted according to the change of the rolling resistance coefficient, and the slip rate offset is sent to a traction force control system to adjust the output of traction force. The control precision of the traction control system on a deep snow road surface can be improved, and the vehicle running speed is increased.

A control system for controlling axle hop in a vehicle includes a sensor and an electronic controller. The sensor is configured to detect a vibration of an axle and to detect a wheel slip of a wheel. The electronic controller is configured to determine whether one of the detected axle vibration exceeds a first predetermined threshold or the detected wheel slip exceeds a second predetermined threshold. An engine traction control system is started upon determining that the one of the detected axle vibration exceeds the first predetermined threshold or that the detected wheel slip exceeds the second predetermined threshold.