15 results about "Electronic differential" patented technology

The invention discloses a central dual-motor parallel configuration distributed multi-gear driving system and a control method, and belongs to the technical field of mechanical driving transmission, the central dual-motor parallel configuration distributed multi-gear driving system comprises two driving systems used for driving wheels, and the two driving systems are symmetrically arranged in parallel; each driving system comprises a motor and a speed reducing mechanism which are arranged in parallel. According to the technical scheme, the two driving systems which are symmetrically arranged in parallel in the center and the cylindrical motors which are arranged in parallel are adopted, so that the axial space is saved; a compound gear transmission system combined by planetary transmission and cylindrical gears realizes large transmission ratio, simple structure and low cost, is matched with a gear shifting mechanism to realize multi-gear convenient switching so as to improve the transmission efficiency, and meanwhile, electronic differential is realized by utilizing the eccentric design of the cylindrical gears and motor control, so that the space is effectively utilized and the bearing capacity is improved.

The utility model provides a kind of electronic differential coaxial three-section electric drive axle.The electronic differential coaxial three-section electric drive axle includes electric drive axle shell and the two groups of drive components symmetrically arranged therein, the drive component includes electric drive axle shell and the two groups of drive components symmetrically arranged therein, the drive component includes sequentially connected input unit, intermediate unit and output unit, the input unit includes multiple motors, converges to the same input shaft, and connects multiple intermediate units, multiple intermediate units converge to the same output unit, the intermediate unit is equipped with gear shifting mechanism and synchronously switches.The electronic differential coaxial three-section electric drive axle provided by the utility model solves the problem that the existing electric drive axle cannot meet the specific working condition use requirements.

This invention relates to the field of electronic differential pressure gauges, and provides an electronic differential pressure gauge with local calibration and zeroing functions. The gauge includes a body and a base box. The body includes a differential pressure display screen, a differential pressure sensor, a high-pressure interface, a low-pressure interface, a valve one, a valve two, and a microcontroller unit. The high-pressure interface is located at the positive pressure input end of the differential pressure sensor, and the low-pressure interface is located at the negative pressure input end of the differential pressure sensor. The high-pressure interface is connected to an external high-pressure interface via a pipeline. The low-pressure interface is connected to a calibration interface and an external low-pressure connection port via a pipeline. The external high-pressure interface and the external low-pressure connection port are used to connect to the environment under test. Both the calibration interface and the external low-pressure connection port are connected to the negative pressure input end of the differential pressure sensor via valve two. Valve one is connected between the pipelines of the positive and negative pressure input ends of the differential pressure sensor. This invention solves the problems of traditional differential pressure gauges requiring manual disassembly of pipelines, reliance on external equipment, or inability to be quickly operated on-site during calibration and zeroing.

This invention provides a control method for an electronic differential limiting device that can temporarily increase the maximum torque. Even when the maximum torque of the electronic differential limiting device is applied and the wheel slip increases to a certain level or its rate of increase is relatively fast, by temporarily increasing the maximum torque upward to the design margin, the maximum wheel speed difference can be reduced and the time required for the wheel speed difference to converge can be reduced.

This invention discloses an electronic control optimization method for modifying off-road chassis vehicles, specifically relating to the field of electronic control optimization technology. By statistically analyzing the number of times the electronic differential lock switches on and off within a fixed sliding window and calculating the moving locking frequency, short-term yaw rate abnormal fluctuation information under high-frequency locking is obtained, and a short-term yaw rate abnormal fluctuation coefficient is calculated. Simultaneously, wheel slip rate adjustment information is collected to calculate the wheel slip rate adjustment coefficient. Combined with the obtained steering angle change information, an abnormal steering angle change coefficient is calculated. Based on the short-term yaw rate abnormal fluctuation coefficient, wheel slip rate adjustment coefficient, and abnormal steering angle change coefficient, a vehicle stability system misjudgment interference model is constructed, and a vehicle stability system misjudgment interference index is output. This achieves real-time and accurate assessment of the degree of misjudgment interference to the vehicle stability system under high-frequency locking of the electronic differential lock, effectively reducing the risk of ESP system misjudgment caused by high-frequency locking.

This invention relates to the field of electric construction machinery drive control technology, specifically a multi-motor drive torque coordination control method for electric shovels; it includes data acquisition, model building, parameter mapping, and torque adjustment processes; the system constructs a virtual viscoelastic shaft model based on the Ackermann principle; its core is to map real-time steering angle, load, and speed difference into virtual stiffness and damping coefficients, calculate the coupling compensation torque, and superimpose it onto the base torque; this invention breaks the traditional opposition between electronic differential and anti-slip control, and achieves flexible connection between the left and right motors through the characteristics of the virtual shaft, effectively suppressing slippage without cutting off power, and taking into account both steering flexibility and driving stability under complex working conditions.

The invention belongs to the technical field of electric vehicle control, and provides an electronic differential control method and related equipment for a wheel-side-driven electric vehicle, and the method comprises the steps: obtaining structure parameters and operation parameters of the wheel-side-driven electric vehicle; based on the Ackerman steering principle, the structure parameters and the operation parameters, scale factors of the wheel speeds of the inner side wheel and the outer side wheel during steering of the wheel-side-driven electric automobile are calculated; based on the mechanical differential principle, the scale factor and the actual vehicle speed, theoretical wheel speeds of inner and outer wheels of the wheel-side-driven electric vehicle are calculated; according to the theoretical wheel speed and the actual wheel speed, the slip rate of the inner and outer wheels is calculated; and according to the slip rate, the torque of the wheel edge driving electric automobile is controlled until the difference value between the actual wheel speed and the theoretical wheel speed is smaller than a preset difference value threshold value. The wheel wear can be reduced, and the vehicle stability is improved.

Symmetrical electronic differential electric drive axle, including two electric drive modules, with the output end of electric drive module half shaft and assembly in half shaft end wheel end planetary row, it is characterized in that: the electric drive module with half shaft coaxial alignment, two electric drive modules between two half shafts mirror image symmetry arrangement, electric drive module includes multiple motors, the power coupling of multiple motors coupling component and with the coaxial connection of coupling component reduction assembly, half shaft and the output end of reduction assembly are connected, coupling component is parallel axis structure, and reduction assembly is planetary reduction structure.The utility model quality distribution is even, improves the carrying capacity, promotes structural stability and security, fuses the efficient transmission of parallel axis and the compact split torsion characteristics of planetary wheel, shortens transmission chain, optimizes power distribution path, improves the power distribution accuracy between wheels under complex road conditions, improves the road condition adaptability of vehicle.

The invention relates to the technical field of electric engineering machinery driving control, in particular to a multi-motor driving torque coordination control method of an electric forklift. The method comprises the steps of data acquisition, model construction, parameter mapping and torque adjustment. The system constructs a virtual viscoelastic axis model based on the Ackerman principle; the core of the method is that a real-time steering angle, a load and a rotating speed difference are mapped into virtual stiffness and a damping coefficient, and coupling compensation torque is solved and superposed to basic torque; the opposition of traditional electronic differential and anti-slip control is broken through, flexible connection of the left motor and the right motor is achieved through the virtual axis characteristic, slip is effectively restrained under the condition that power is not cut off, and steering flexibility and driving stability under the complex working condition are both considered.

The invention discloses a distributed multi-gear driving system with double central motors oppositely arranged and a control method, and belongs to the technical field of mechanical driving transmission, the distributed multi-gear driving system comprises two driving systems used for driving wheels, and the two driving systems are oppositely arranged in a mirror image mode with the driving axes of the driving systems as the center; and the two driving systems respectively comprise a motor and a speed reducing mechanism which are coaxially arranged. The two driving systems which are oppositely arranged in a mirror image mode with the driving axis as the center are adopted, driving shafts are centered and symmetrically output, and eccentricity is reduced; the motor and the speed reducing mechanism are coaxially arranged to save space; planetary transmission and cylindrical gear compound transmission realize a large transmission ratio; three speed ratios are conveniently switched through the compound gear mechanism and the gear shifting mechanism, and the performance of the motor is fully exerted; electronic differential is achieved by combining the eccentric design of the cylindrical gear assembly and motor control, and the efficient, smooth and multi-gear requirements of electric drive vehicle types under complex working conditions are met.

The invention discloses an electric articulated truck, and a traction control system and a traction control method thereof. The traction force control system comprises a sensing layer which comprises a plurality of sensors and is used for detecting sensing data required by the traction force control system; the decision-making layer comprises a vehicle control unit and is used for fusing the sensing data sent by the sensor, executing and operating a slip rate observation model and a torque distribution algorithm and generating a control instruction; and the execution layer comprises a front axle motor, a middle axle independent motor, a rear axle independent motor, an electronic differential lock, a virtual clutch and an electronic braking system, and is used for executing three-motor distributed driving, electronic differential and inter-wheel and inter-axle power stepless adjustment according to the control instruction generated by the decision layer. According to the embodiment of the invention, the system response speed and control precision are improved.

The application discloses an electronic differential pressure flow switch, which comprises the following steps: an electronic flow differential pressure switch is in communication connection with a main control system, the main control system is in communication connection with an LED panel, and exhaust pipe temperature and exhaust pipe differential pressure values detected are displayed on the LED panel; and the main control system is also in communication connection with an ignition switch and an alarm, differential pressure data of the exhaust pipe are acquired through a thermal flow differential pressure sensor, the differential pressure data are analyzed through overall comprehensive analysis and then through time and space dimensions, respectively, to determine whether a fan or the exhaust pipe is faulty; and the differential pressure data are used to calculate a maintenance coefficient of the fan and the exhaust pipe, and according to the maintenance coefficient, a staff member can quickly handle and maintain.

This invention provides a vehicle steering electronic differential control method, relating to the field of vehicle driving technology. The method includes: constructing a virtual center axle arm structure at the midpoint of the vehicle frame in the left-right direction, and establishing an electronic differential model of the vehicle based on the vehicle and the center axle arm structure; acquiring the vehicle's steering mode, the target speed of the wheels driven by the center axle arm structure in this steering mode, and the current steering angle of the steering wheels in this steering mode; calculating the average projected steering radius of the steering wheels in the vehicle based on the electronic differential model, the steering mode, and the current steering angle; calculating the desired speed of each wheel in the vehicle based on the electronic differential model, the steering mode, the target speed, and the average projected steering radius, and using the desired speed as the control speed of the corresponding wheel. This control method can improve the speed matching between the wheels during vehicle steering, thereby improving the stability and power of vehicle operation.

The invention provides a vehicle control method and device, electronic equipment and a vehicle, and the method comprises the steps: obtaining a target lateral acceleration, a first vertical acceleration, a first wheel speed, a target steering wheel rotation angle, a target steering wheel rotation angle speed, an electronic differential lock system control signal and a breakable stabilizer bar control signal of a target vehicle; the target vehicle speed is determined through the first wheel speed, the transverse state is determined through the target lateral acceleration, the target steering wheel rotation angle number and the target steering wheel rotation angle speed, and the road surface adaptation state is determined through the first vertical acceleration; when the target vehicle speed is in the horizontal state and the road surface adaptation state, disconnection and connection of a disconnectable stabilizer bar in the target vehicle are controlled, or when the target vehicle speed is smaller than a first preset value, disconnection and connection of the disconnectable stabilizer bar in the target vehicle are controlled through an electronic differential lock system control signal or a disconnectable stabilizer bar control signal. The embodiment of the invention ensures the driving stability.

The present application relates to a kind of mutual redundancy dual-motor drive axle and control method thereof, belong to electric vehicle technical field, mutual redundancy dual-motor drive axle includes drive axle housing assembly;Reducer assembly is installed on drive axle housing assembly;Wheel end half shaft, is installed in reducer assembly both ends, wheel end half shaft one end is connected with reducer assembly through spline, the other end penetrates drive axle housing assembly and extends to outside;Wheel end assembly, is installed in wheel end half shaft and extends drive axle housing assembly one end;Brake assembly is installed on wheel end assembly.The present application adopts the design scheme of dual motor, can independently and accurately control the rotational speed and torque of each drive wheel, can avoid unnecessary power loss, improve the utilization efficiency of energy, can realize the performance of electronic differential, improve the steering stability and driving safety of whole vehicle.And in the case where one motor cannot work, realize the function of mutual redundancy, by another motor independent drive two side wheels.