55results about How to "Reduce the number of shifts" patented technology

The invention discloses a PHEV four-drive torque distribution method based on an ECMS. The method specifically comprises the following steps of step 1, calculating equivalent fuel consumption factorsaccording to the residual electric quantity of a power battery; step 2, calculating instantaneous total equivalent fuel consumption rate; step 3, converting all working torque combinations of an engine, a BSG motor and a rear axle motor into the working torque of a driving wheel, and determining the working torque range of each power source according to the working torque range of the driving wheel; step 4, solving the minimum value of the instantaneous total equivalent fuel consumption rate within the actual working torque range of each power source; and step 5, taking the working torque of each power source corresponding to the minimum instantaneous total equivalent fuel consumption rate as the PHEV optimal working torque for distribution. According to the method, the calculation processof the torque distribution is simplified, the torques of all power sources of a hybrid electric vehicle are reasonably distributed, so that the charge state of the power battery of the vehicle is kept balanced, the equivalent oil consumption is reduced, and the driving performance and riding comfort of the vehicle are improved.

A control device (10) for a rolling stock drive device (100) carries out the following: when shifting a transmission mechanism (6) in a state where a rotary electric machine (3) is regenerated, predicts a heat generation amount generated by an engagement element that switches grip when shifting, in a case where a target gear stage after shifting is separated from the current gear stage by numerous stages; determines from the predicted heat generation amount whether there is jump shift that jumps a gear stage that can be carried out between the current gear stage and the target gear stage; and in a case where there is a jump shift that can be carried out, controls the transmission mechanism (6) so that while the jump shift is carried out, shifting is carried out from the current gear stage to the target gear stage.

The invention provides a gear shifting method and device of a vehicle. The method includes the steps of determining the current accelerator opening degree and current gear of the vehicle in the driving process of the vehicle, determining the trip stop duration according to the current accelerator opening degree and the current gear, determining the trip stop vehicle speed corresponding to the current accelerator opening degree according to a trip stop curve corresponding to the current gear, making the gear of the vehicle jump to a preset trip stop gear when the driving speed of the vehicle isnot smaller than the trip stop vehicle speed within the trip stop duration, determining the gear shifting vehicle speed corresponding to the current accelerator opening degree according to a gear shifting curve corresponding to the current gear when the driving speed of the vehicle is not larger than nor equal to the trip stop vehicle speed within the trip stop duration, and switching the gear ofthe vehicle into a preset shifting gear when the driving speed of the vehicle is not smaller than the gear shifting vehicle speed. By means of the method, trip stop can be performed in the driving process of the vehicle, the gear shifting frequency of the vehicle is reduced, and the power interruption situation of the vehicle caused by frequency gear shifting is effectively avoided.

The invention provides a rapid construction method for an offshore reinforced concrete frame structure. The rapid construction method for the offshore reinforced concrete frame structure comprises the following steps of step 01 beam column framework prefabrication, prefabricating a beam column framework which is formed by a vertical column and not less than one layer of horizontally cross beams through concrete at a smooth and open position; step 02 integrally hanging the beam column framework, transporting the beam column framework through a scow and hanging the beam column framework through a floating crane after concrete cast-in-situ of the beam column framework is finished and the intensity achieves the design intensity; step 03 concrete cast-in-situ of floor slabs, arranging a mixer on a mixing ship or a platform and enabling a crane cableway bucket to perform floor board pouring; S04 brickwork and decoration engineering construction which comprises performing brickwork and decoration engineering construction on the beam column framework. According to the rapid construction method for the offshore reinforced concrete frame structure, the integral fabrication hanging technology is adopted, the construction work efficiency is improved, and the construction period is shortened.

The invention discloses a path planning method for vertical automatic parking comprising creating an overall coordinate system by using surrounding environment information of a vehicle needing for parking obtained by a sensor, determining whether the vehicle needing for parking can accomplish automatic parking in the current overall coordinate system by combining with vehicle steering characteristics based on an Ackermann steering mechanism and carrying out a vertical parking path planning. By using a simple geometric construction method for the vertical parking path planning, the path planning method for the vertical automatic parking has the advantages of successfully accomplishing the parking in three times, improving the efficiency of the vertical parking path planning, possessing better robustness and rapidly realizing path planning when the parking is only obstructed by obstacle garages.

The invention relates to an inching gear engagement controlling device comprising a signal acquisition circuit, an input control signal circuit, a display circuit, a microcomputer controller, and an output control circuit, wherein the microcomputer controller is used for receiving and detects gear signals acquired by the signal acquisition circuit, displaying the gear signals by the display circuit which is connected with the microcomputer controller, receiving control signals transmitted by the input control signal circuit, and transmitting the control signals to the output control circuit; the output control circuit is used for receiving the control signals from the microcomputer controller to drive an input shaft to carry out micro-rotation to finish an inching gear engagement operation. According to the inching gear engagement controlling device disclosed by the invention, problems that gear engagement is difficult, repeated apical teeth of gear engaging components are impacted, the end surfaces of the gear engaging components are cracked and broken and the like due to the defects of the prior art are solved, the gear engagement times can be reduced, the labor strength of operators is reduced, and the success rate of gear engagement and the operation efficiency are improved; and meanwhile, an interlocking protection function is provided so that a starter, a hydraulic motor and the like of an engine can be protected, the safety and the reliability of vehicle devices are ensured, the damage to the vehicle devices and other train operation accidents caused by the error operation are prevented.

The present application discloses a method and device for generating a cyclic redundancy check code, wherein the method includes: converting a preset generator polynomial G(X) into a binary code G(n); converting the cyclic redundancy check code to be generated The information M(X) is converted into binary code M(k); among them, n=0,1,...,N; k=0,1,...,K‑1; N is the order of G(X) , K is the number of digits of M(k); according to the M(k) and the G(n), the preset feedback shift register group is used to calculate M(k)*X by shifting successively N Modulo 2 is divided by the remainder of G(n), and the remainder is used as the cyclic redundancy check code of the M(k); wherein, the feedback shift register group is according to Q(i-1)=G(0 )*Q(i‑1)*X ‑N +G(1)*Q(i‑1)*X ‑(N‑1) +…+G(N-1)*Q(i-1)*X ‑1 +M(i-1)+G(N) is constructed; the Q(i-1) represents the quotient of the i-1th shift and division, the + represents the modulo 2 addition operation symbol, and the * represents Multiplication symbol, X ‑n A symbol representing a logical right shift n times, i=1,...,K. By adopting the invention, the calculation cost can be saved, and the generation efficiency of CRC can be effectively improved.