247results about How to "Reduce speed difference" patented technology

A detection unit detects one of a plurality of inter-vehicle areas as an area candidate where the own vehicle can perform lane change. A calculation unit calculates a required inter-vehicle distance which should be secured between the own vehicle and a nearby vehicle upon lane change to the area candidate. An extraction unit extracts, within preset allowable ranges, a standby time and a target speed used for estimating an estimated inter-vehicle distance as lane change conditions which are conditions for the estimated inter-vehicle distance to be equal to or more than the required inter-vehicle distance. When the lane change conditions are extracted, and a determining unit determines that lane change is possible, a setting unit sets the area candidate as the lane change area.

A transmission (1) for distributing a drive torque to at least two output shafts (7, 8) which has at least two planetary gear sets (2, 3) with at least three shafts wherein each shaft (4, 5) of a planetary gear set (2, 3) is connected with one input shaft (6). Besides, each shaft of a planetary gear set (2, 3) constitutes one of the output shafts (7, 8) and at least one other shaft (9 or 10) of a planetary gear set (2 or 3) is operatively connected with one shaft (10 or 9) of one other planetary gear set (3 or 2). A torque of a shaft (9 or 10) dependent on operating state can be supported according to an operating state of the respective other shaft (10 or 9) via an operative connection (11) therewith in a manner such that when a rotational speed difference occurs between the output shafts (7, 8) a torque that changes the rotational speed difference abuts via the operative connection (11) on the planetary gear sets (2, 3).

Restraining torque T_F of an electronic controlled front limited slip differential (5) arranged between right and left front wheels is controlled in accordance with controlling right-left wheel rotational speed difference ΔN_F, which is the rotational speed difference between the right and left front wheels, while restraining torque T_C of an electronic controlled coupling (8) arranged between the front and rear wheels is controlled in accordance with controlling front-rear wheel rotational speed difference ΔN_C obtained by subtracting ½ of the rotational speed difference between the right and left wheels (|ΔN_F|/2) from the rotational speed difference (ΔN_CT−ΔN_CD) between the front and rear wheels.

A control system includes a transfer. The transfer is disposed in a power transmission path between the driving power source and primary driving wheels and distributes dynamic power of the driving power source to the secondary drive wheels. A driving power transmission shaft transmits the dynamic power of the driving power source distributed by the transfer to the secondary drive wheels. A clutch mechanism is disposed in a power transmission path between the transfer and the driving power transmission shaft. A electronic control unit engages at least one of a first and second clutches and then engages the clutch mechanism on the basis of a steering state at the time of switching from a two-wheel-drive traveling state in which the clutch mechanism and the first and second clutches are disengaged to a four-wheel-drive traveling state in which the clutch mechanism and the first and second clutches are engaged.

The invention discloses a blade hole type prewhirl nozzle for a prewhirl cooling system, and belongs to the field of application of aero-engine prewhirl cooling systems. The blade hole type prewhirl nozzle is characterized in that a blade pressure face and a blade suction face are adopted for forming inclined hole runners deflecting in the circumferential direction of a nozzle ring at equal intervals, deflecting molded faces of the nozzle runners are in a gradually-contracted shape, a minimum laryngeal area is achieved at an outlet of the prewhirl nozzle, the accelerating performance and the deflecting performance of the prewhirl nozzle are effectively guaranteed, and the flowing loss of a main flow is small. Blade type solid blocks are distributed between adjacent runners of the prewhirl nozzle, under the condition that the laryngeal area of the nozzle is definite, the ratio of the blade height to the pitch of the prewhirl nozzle can be flexibly adjusted by additionally arranging the blade type solid blocks, and the long and narrow performance of the sections of the runners is effectively improved, so that the secondary flow loss of the end walls in the runners is reduced, the flow coefficient and the prewhirl efficiency of the prewhirl nozzle are improved, and the system temperature drop effect is further improved.

The invention provides a soymilk machine head, which is arranged on a barrel body of a soymilk machine. A crushing blade and a spoiler are arranged on a rotating shaft of the machine head, wherein the spoiler sleeves on the rotating shaft, and can rotate relative to the rotating shaft, and the crushing blade drives a food material in the barrel body to rotate; the food material drives the spoiler to rotate. According to the soymilk machine head provided by the invention, the rotating shaft drives the crushing blade to rotate at high speed, and the crushing blade which rotates at high speed drives the food material to rotate in the barrel body, accordingly, under the rotation of the food material, the spoiler absorbs the kinetic energy of part of food material to rotate along with the food material in the same direction, and the rotating speed difference between the spoiler and the food material becomes small; meanwhile, by matching of the rotation of the spoiler, the food material can be stably stirred by the spoiler, accordingly, the food material is more uniformly distributed in the barrel body, the rotation of the food material is more stable, and the disturbing effect of the spoiler is more obvious; meanwhile, the noise generated by the larger rotating speed difference between the food material and the spoiler is also reduced to better achieve the purpose of noise reduction in the soymilk machine.

A conveyor for clean manufacturing applications. The conveyor comprises interconnected conveyor modules, each of which includes a conveyor belt segment (s). Each conveyor belt segment includes a pair of side rails that are in parallel or substantially in parallel to each other; a pair of autonomous, belt-drives for transporting work pieces or objects carrying work pieces from a proximal end of the belt segment to a distal end of the belt segment; a pair of driving wheels for turning the belt-drives, and a motor for directly or indirectly driving each of the pair of driving wheels. One of the driving wheels is mechanically or magnetically coupled to a magnetic hysteresis clutch that allows the driving wheels to disengage from the drive shaft of the motor if the inertia of the work piece does not permit synchronization of work piece with the drive speed of the motor during acceleration or deceleration.

A conveyor segment for clean manufacturing applications. Each conveyor belt segment includes a pair of side rails parallel to each other; a pair of belt-drives for transporting work pieces from a first end to a second end of the belt segment; a pair of driving wheels for turning the belt-drives. The belt of each of the belt-drives is disposed in a serpentine path about plural, load-bearing upper idler wheels, around either a lower loop-back idler wheel or a driving wheel, and back up and around another pair of upper idler wheels. This sequence is repeated a selected number of times about additional pairs of upper idler wheels and lower loop-back idler wheels or a driving wheel before the belt is disposed beneath plural return idler wheels and back up to the starting point. Slipping between the belt and wheels is thus minimized, even in the absence of a work piece on the belt segment.

The invention provides an electric drive system based on two-gear speed changing and a coordinated gear shifting control method of the electric drive system. The electric drive system comprises a power supplying unit, a motor controller, a motor, a vehicle controller, a gear shifting controller and a two-gear planet speed changer. The two-gear planet speed changer is internally provided with a planet transmission two-gear automatic speed changing box and a wet clutch to shift gears, gear shifting is convenient, and the size and the weight are greatly reduced. In the gear shifting process, the vehicle controller controls the motor controller and the gear shifting controller through a bus in a communication mode, the motor controller controls the motor output torque to track the optimal motor torque track, the gear shifting controller controls gear shifting oil pressure to track the optimal gear shifting oil pressure track, and therefore synchronous adjusting of the motor torque and the gear shifting oil pressure is achieved, the difference of the rotating speed of a main component and the rotating speed of an auxiliary component and the gear shifting impact when a clutch and a brake are combined or separated are reduced, and smooth gear shifting is achieved.

An image forming apparatus includes first and second rotation members which are a plurality of rotation members for performing image formation and rotate in contact with each other. A first driving motor drives the first rotation member. A second driving motor drives the second rotation member. The obtaining unit obtains pieces of motor driving information about driving states of the first or second driving motor at respective relative driving speeds when the relative driving speed of the second driving motor with respect to the driving speed of the first driving motor is changed to a plurality of relative driving speeds. The control unit controls the driving speed of at least either the first or second driving motor in image formation to reduce the relative speed difference between the circumferential velocities of the first and second rotation members based on the pieces of motor driving information obtained by the obtaining unit.

The invention discloses a novel multi-blade centrifugal fan. The novel multi-blade centrifugal fan comprises a volute, a volute tongue and a plurality of fan blades fixed in the volute, wherein one lateral side of the volute tongue is fixed on the inner lateral side of the air outlet of the volute, the other lateral side of the volute tongue is a concave face, a plurality of air guide grooves are formed in the concave face, the two end faces of each fan blade are arc-shaped faces, a zigzag structure is arranged on one arc-shaped face of each fan blade, a bionic non-smooth structure is arranged on the other arc-shaped face of each fan blade, and airflow sequentially passes the bionic non-smooth structures and the zigzag structures and then is discharged from the air outlet of the volute. The novel multi-blade centrifugal fan has the advantages that the air quantity and air pressure of the fan are increased effectively, the noise of the fan is lowered effectively, and the efficiency of the fan is increased effectively.

A vehicle control system is provided. The vehicle control system is applied to a vehicle having a clutch device adapted to selectively connect and disconnect a power transmission route between a prime mover and drive wheels. The vehicle control system disconnects the power transmission route during running to allow the vehicle to coast. The vehicle control system is comprised of: a means detecting a vehicle speed; a means detecting an operation of an accelerator by a driver; a means detecting a braking operation of the driver; an execution means executing a coasting control when an operating amount of the accelerator is reduced to be smaller than a predetermined value during running, by bringing the clutch device into disengagement to disconnect the power transmission route so as to allow the vehicle to coast; a determination means determining whether or not a deceleration demand of the driver is larger than a predetermined value during execution of the coasting control based on the vehicle speed and the braking operation; and a termination means determining a fact that the deceleration demand is strong if the deceleration demand is larger than the predetermined value, and that terminates the coasting control by bringing the clutch device into engagement to connect the power transmission route.

The invention belongs to the technical field of aviation and space, and particularly relates to a high pressure annular jet pump suitable for a pumping pressure type supply system. The high pressure annular jet pump comprises an inlet section pipe, a mixing section pipe, a throat pipe, a diffusion section pipe and an outlet section pipe which are sequentially arranged in the flowing direction of main fluid. The high pressure annular jet pump is characterized by further comprising step section pipes which are sequentially arranged between the inlet section pipe and the mixing section pipe; each step section pipe comprises a convergence section pipe and a straight section pipe; each straight section pipe is provided with a spraying nozzle for providing high pressure fluid. The high pressure annular jet pump is compact in structure, light in weight, good in anti-cavitation performance and capable of meeting the requirement for normal work under the working conditions of high rotating speed and low inlet pressure.

The invention discloses multi-group color separation spinning and crocheting wool yarn and a manufacturing method of the multi-group color separation spinning and crocheting wool yarn. The manufacturing method comprises the steps that elastic nylon or filaments are crocheted to be net-shaped yarn, drafted multi-group color separation spinning short fiber thick yarn wool tops are fed and enter false twisting hooks of hook wood ingots under the traction of the nylon filaments or the elastic filaments, 10-20 false twists are added on strands and the nylon filaments or the elastic filaments to form thick yarn to be attached to the net-shaped yarn of the nylon filaments or the elastic filaments, and the multi-group color separation spinning and crocheting wool yarn is obtained after untwisting. As the tape yarn is of a drafting type, the yarn has the advantages of being soft, fluffy, high in strength and the like, wool does not fall off easily, the yarn is applicable to sweater yarn of autumn and winter clothes, and good moisture absorption performance, the heat retention performance and the air permeability are achieved. The manufacturing method overcomes the defect that a traditional twisting machine is single in fiber mode, enriches the characteristics of multiple components of the yarn, subsequent dyeing is avoided, and the yarn is an environmentally friendly product.

The invention discloses a power distributor and unitary power distribution system of a hybrid power automobile. The power distributor comprises a housing assembly, a bevel gear planetary gear train, a bearing, disk spring parts and shaft parts, wherein power is supplied from the left side of the power distributor via a spline shaft of a left end cover; at least three planetary gears of the bevel gear planetary gear train are driven by the housing assembly to revolute, thereby distributing the power to a right half shaft gear and a left half shaft gear of the bevel gear planetary gear train; finally the power is output from the right half shaft gear spline shaft and the left half shaft gear spline shaft from the right side of the power distributor through the spline. According to the invention, the unitary power distribution system adopts the power distributor; the input shaft of the power distributor disclosed by the invention is arranged at the left side of a device, two output shafts are led out from the right side of the device, so that a power generator of the unitary power distribution system can be arranged in parallel with a motor coaxially, so that the occupied space of the system is reduced; furthermore, the gear has good bearing effect and high revolution precision.

A piezoelectric driving module for lens, which defines a photographic optical axis and includes a housing, a driven object (e.g., a lens module), a piezo member, and a rubbing element. The piezo member and the rubbing element are provided in the housing and located on two lateral sides of the driven object respectively. The piezo member drives the driven object by friction so that the driven object can be moved along the photographic optical axis until focused. Meanwhile, a predetermined frictional force is generated between the rubbing element and the driven object to reduce a gravity-induced speed difference between forward and backward movements of the driven object along the photographic optical axis.

The present invention discloses an arrangement method of an expressway merging area prohibition afflux line. The method comprises the following steps: 1) basic traffic data collection of an expressway merging area; 2) calculating the shortest afflux distance in a low-density state; 3) calculating the shortest afflux distance in a medium-density state; and 4) determining the length of the prohibition afflux line. The arrangement method of the expressway merging area prohibition afflux line can effectively improve the phenomenon that vehicles at the ramp of the expressway merging area do not completely accelerate to merge a main line so as to effectively avoid the traffic accidents caused by speed difference of vehicles on the main line and the vehicle on the ramp and facilitate safe improving and lifting of the expressway merging area.

The invention relates to an automatic sheet transmission tension adjustment device, which is used for automatically adjusting the transmission tension force of a sheet unreeled from a sheet unreeling device and transmitted to a sheet post-processing device. The automatic sheet transmission tension adjustment device comprises a swing roller mechanism, wherein the swing roller mechanism is provided with a swing roller, a swing rod and a swing shaft; the swing roller is arranged at one end of the swing rod to do the pendulum movement around the swing shaft; the swing roller is positioned between the sheet unreeling device and the sheet post-processing device and pressed on the sheet; and the swing roller is used for swinging up or down with the change of the sheet unreeling speed of the sheet unreeling device and the sheet traction speed of the sheet post-processing device to reduce or increase the transmission stroke of the sheet between the sheet unreeling device and the sheet post-processing device so as to keep stable sheet transmission tension force in the transmission process. The invention further relates to a sheet post-processing system comprising the automatic sheet transmission tension adjustment device.

The invention discloses a greenhouse gas conversion device and method utilizing a magnetic field to strengthen a blade gliding arc. The device comprises a blade gliding arc stabilization system and areactor. The blade gliding arc stabilization system comprises a first DC power supply, a second DC power supply, an inductance coil, a diode and an electromagnetic relay switch. The voltage of the second DC power supply is greater than that minimum breakdown voltage between two electrodes of the reactor. The voltage of the first DC power supply is 1/8-1/2 of the minimum breakdown voltage between the two electrodes of the reactor. The second DC power supply provides breakdown voltage, and the first DC power supply maintains power feeding. The reactor consists of an encloser, two electrodes, twoflat magnets and a nozzle. The encloser is a straight quadrangular prism structure with a rectangular cross section, and the two flat magnets are arranged outside the encloser parallel to each other.The invention improves the traditional blade reactor, utilizes the dual driving of the magnetic field and the airflow field, significantly improves the treatment capacity on greenhouse gas, and greatly prolongs the reactor lifetime.

The invention discloses a tea powder grinding machine. The bottom of a machine case is communicated and provided with a base; a feeding groove is communicated and arranged in the top of the machine case; a material crushing device and a grinding device which are mutually communicated are arranged in the machine case from top to bottom; the crushing device and the grinding device are in coaxial arrangement and are respectively in transmission connection with a driving motor arranged in the base through a transmission shaft A; a feeding opening is formed in the bottom of the feeding groove; thefeeding opening is positioned above the material crushing device; a material containing notch used for placing a material container is arranged at the side wall of one side of the base; a dischargingopening communicated with the machine case is arranged on the top surface, positioned in the material containing notch position, of the base. Through the structure, the tea powder grinding machine hasthe advantages that the tea is fast crushed into crushed materials; then, the crushed materials are directly ground into powder; material discharging is performed; the tea grinding efficiency and grinding effect are improved.

The invention relates to a sprocket for chain drives, with an axis of rotation and with two groups, arranged next to and offset with respect to one another on the circumference of the sprocket, of pockets for chain links passing the sprocket in an oblique position. Each pocket is delimited laterally by a side wall and an opposite wall and, in the circumferential direction, by webs. In order that a sprocket for chain links running in obliquely can be produced more simply and to provide a better distribution of forces, according to the invention the side wall and the opposite wall of a pocket form for the chain links bearing surfaces which run obliquely with respect to the axis of rotation and which extend as far as a bottom of the pockets.

The invention discloses a roller grinding device capable of stabilizing a material layer and improving a grinding effect of fine particles and relates to a grinding process and a grinding device which are suitable for grinding micro powder substances, cement clinker and other particles. Materials enter a grinding disk 02 through a discharge pipe of the roller grinding device and are dried by hot air of an air chamber 03, and the ground micro powder is carried into a powder concentrator 01 and is sorted so as to obtain finished products of which the specific surface area is 450m<2>/kg; the materials are pre-compacted and distributed by material stabilizing rollers 04 with design of small-inclination angle roller surfaces to ensure that air is discharged, and a firm wedge shape is formed; grinding rollers 05 stably roll and crush the materials to ensure that the materials are thinned; the thinned materials are crushed by the grinding rollers and then staggered, and then are distributed by the material stabilization rollers again so as to form a wedge shape; the materials are distributed and ground by the material stabilizing rollers and the grinding rollers alternately to ensure that the materials can achieve the required fineness; and due to the design of the small-inclination angle roller surfaces, the key function of stabilizing the material layer is exerted, the sliding and blockage effects and vibration can be prevented by the roller arranging scheme with refined functions, the function of the device is enhanced, the vibration in a running process is reduced, the powder fineness can be controlled reliably, and the grinding efficiency can be improved simultaneously.