47results about How to "Avoid Jittery Situations" patented technology

The invention provides a method and a device for judging jittering of an automobile. The method for judging the jittering of the automobile comprises the following steps of obtaining the speed running working condition of the automobile in a preset time period; obtaining the rotation speed extreme values of the automobile in the preset time period and the frequency sum of the rotation speed extreme values, wherein the rotation speed extreme values comprise the maximum and minimum rotation speeds of the automobile in the preset time period; according to the running working condition, the rotation speed extreme values and the frequency sum of rotation speed extreme values of the automobile in the preset time period, judging whether the automobile has jittering or not in the preset time period. The method has the advantages that according to the maximum and minimum rotation speeds corresponding to the running working condition of the automobile in the preset time period, the jittering of the automobile can be accurately judged in the test process of the whole automobile; by utilizing the results obtained by the method, the jittering of the batch-produced automobile in the actual running process due to inaccurate testing results can be avoided.

The invention relates to a convenient lifting type office table. The office table comprises a lifting bottom frame, a table top plate, two hidden grooves, two hidden storage devices, a middle groove and a balance detection device, wherein the table top plate is installed at an upper end of the lifting bottom frame, the two hidden grooves are formed in the left end and the right end of the table top plate, and the hidden storage devices are installed on the hidden grooves; a middle groove is formed in the middle of the desktop plate, and a balance detection device is installed on the middle groove. The office table can solve problems that a file box placed on a tabletop occupies a large area, the space used by a person during work becomes narrow, inconvenience is brought to the person, the height of table legs of an existing office table is fixed, the tabletop is difficult to level for some rugged grounds, discomfort is easily caused when the person works, and the like.

An on-line detection system and detection method for round steel surface defects, belonging to the technical field of metal surface detection, in which two fixed boxes are arranged symmetrically on both sides of the round steel roller table The lower part of the frame is surrounded by a detection channel for the round steel to pass through. A fixed bracket is installed in the fixed box. Multiple industrial camera components are arranged at equal intervals on the two fixed brackets. The imaging ranges of two adjacent industrial camera components overlap or touch each other. , both sides of the detection channel are symmetrically installed with arc-shaped light source components along its circumference. The beneficial effect of the present invention is that the present invention realizes online real-time comprehensive and clear collection of images of the round steel surface, avoiding the situation of shaking in image collection. It effectively avoids the problem of image signal-to-noise ratio reduction, can accurately identify and judge the defects on the surface of the round steel, prevents the problem that the temperature of the round steel is too high and affects the normal collection work, and realizes the automatic online detection of the surface defects of the round steel.

The invention relates to the technical field of building walls, and discloses a building prefabricated light steel structure wall, including a wall frame, the top and bottom ends of the wall frame are fixedly connected with I-beams, and the corresponding inner side of the wall frame is Sliding grooves are provided, and several sliding frame bodies are slidably connected in the sliding grooves. Positioning support mechanisms are fixedly installed on both sides of the top of the sliding frame body. The positioning support mechanism includes a fixed cylinder, a connecting column, a threaded column and a positioning column. The connecting post is slidably connected in the fixing cylinder, the threaded post is fixedly connected to the top middle of the connecting post, and the positioning post is fixedly connected to the top middle of the threaded post. The prefabricated light-weight steel structure wall of the building ensures that the steel structure wall can be replaced with its installed board during use, so that the board can be replaced in time for long-term poor damage, ensuring that the steel structure wall can be used normally. The use cost is reduced, and the installation efficiency of the steel structure wall is higher than that of the traditional steel structure wall.

The embodiment of the invention discloses a vehicle turning control method, device, vehicle and storage medium. Wherein, the method includes: receiving the current position information of the vehicle captured by the positioning and navigation system and the target waypoint information of the target curve where the vehicle is located, and the current speed information of the vehicle captured by setting the sensor; according to the current Determine the lateral control input information and longitudinal control input information of the vehicle based on position information, target waypoint information and current vehicle speed information; determine the steering wheel angle of the vehicle through model predictive control according to the lateral control input information; The longitudinal control input information determines the driving acceleration of the vehicle through proportional integral differential control; controls the vehicle to turn according to the steering wheel angle and driving acceleration. The technical solution provided by the embodiments of the present invention enables the vehicle to pass through a curve with a large curvature during turning control, thereby improving stability and comfort.

The invention discloses a double-derricking cylinder hydraulic control system. The double-derricking cylinder hydraulic control system further comprises a two-position three-way reversing valve, a cartridge valve and a synchronous control device; a port A of a three-position four-way reversing valve communicates with a first working oil port of the cartridge valve; a control oil port of the cartridge valve communicates with a port A of the two-position three-way reversing valve; a port B of the two-position three-way reversing valve communicates with a second working oil port of the cartridge valve; the second working oil port of the cartridge valve communicates with a first oil port of the synchronous control device; a second oil port of the synchronous control device communicates with rodless cavities of a first derricking cylinder and a second derricking cylinder; and rod cavities of the first derricking cylinder and the second derricking cylinder communicate with a port B of the three-position four-way reversing valve. The double-derricking cylinder hydraulic control system realizes the locking function through the two-position three-way reversing valve and the cartridge valve, and prevents shaking of a lifting arm.