机械外文翻译文献翻译汽车转向系统

更新时间:2023-06-29 15:59:03 阅读: 评论:0

Auto steering system
Abstract: With the rapid development of electronic technology, people on the vehicle steering control performance of more and more high. Wire control steering system will be the trend of the development of automobile steering system. Normally according to mechanical steering gear form can be divided into: super-modulus gear type, circulation ball type, worm wheel type, worm gear and worm refers to pin type. The increa of vehicle weight and people to the improvement of vehicle handling performance requirements, simple mechanical steering system can not meet needs, power steering system came into being, it can in the pilot turned the steering wheel and at the same time provide power, power steering system is divided into hydraulic steering system and electric steering system 2 kinds. Hydraulic steering system which is the most widely ud steering system.
葳蕤汤Hydraulic steering system is the basis of the mechanical system increas the system, including hydraulic pump, v-shaped belt wheel, oil injection equipment, power devices and control valves. With the help of the automobile engine driving hydraulic pump, air compressor and generator etc, in order to hydraulic, pneumatic or electric power increas the power of the front wheel steering the pilot control to make drivers can light the flexibility to manipulate car turned, reduce labor intensity, improve the driving safety.
Electric power steering system is now the development direction of car steering system, its working principle is: EPS system to the ECU from steering wheel torque nsor and speed nsor signal analysis, control motor to produce the proper power torque, assist drivers finish to the operation.
Key words: Wire control steering system Hydraulic steering system Electric power steering system nsor
Along with automobile electronic technology swift and violent development, the people also day by day enhance to the motor turning handling quality request. The motor turning system changed, the hydraulic pressure boost from the traditional machinery changes (Hydraulic Power Steering, is called HPS), the electrically controlled hydraulic
pressure boost changes (Elect ric Hydraulic Power Steering, is called EHPS), develops the electrically operated boost steering system (Elect ric Power Steering, is called EPS), finally also will transit to the line controls the steering system (Steer By Wire, will be called SBW).
The machinery steering system is refers by pilot's physical strength achievement changes the energy, in which all power transmission all is mechanical, the automobile changes the movement is operates the steering wheel by the pilot, transmits through the diverter and a ries of members cha
nges the wheel to realize. The mechanical steering system by changes the control mechanism, the diverter and major part changes the gearing 3 to be compod.
Usually may divide into according to the mechanical diverter form: The gear rack type, follows round the world -like, the worm bearing adjuster hoop type, the worm bearing adjuster refers lls the type. Is the gear rack type and follows using the broadest two kinds round the world -like (us in needing time big steering force).In follows round the world -like in the diverter, the input changes the circle and the output steering arm pivot angle is proportional; In the gear rack type diverter, the input changes the turn and the output rack displacement is proportional. Follows round the world -like the diverter becau is the rolling friction form, thus the transmission efficiency is very high, the ea of operation also the rvice life are long, moreover bearing capacity, therefore widely applies on the truck. The gear rack type diverter with follows round the world -like compares, the most major characteristic is the rigidity is big, the structure compact weight is light, also the cost is low. Becau this way pass on easily by the wheel the reacting force to the steering wheel, therefore has to the pavement behavior respon keen merit, but simultaneously also easy to have phenomena and so on goon and oscillation, also its load bearing efficiency relative weak, therefore mainly applies on the compact car and the pickup truck, at prent the majority of low end pasnger vehicle us is the gear rack type machinery steering system.
Along with the vehicles carrying capacity increa as well as the people to the vehicles handling quality request enhancement, the simple mechanical type steering system验收报告单
were already unable to meet the needs, the power steering system ari at the historic moment, it could rotate the steering wheel while the pilot to provide the boost, the power steering system divides into the hydraulic pressure steering system and the electrically operated steering system two kinds.Hydraulic pressure steering system is at prent us the most widespread steering system.
The hydraulic pressure steering system incread the hydraulic system in the mechanical system foundation, including hydraulic pump, V shape band pulley, drill tubing, feed installment, boost installment and control valve. It with the aid of in the motor car engine power actuation hydraulic pump, the air compressor and the generator and so on, by the fluid strength, the physical strength or the electric power increas the pilot to operate the strength which the front wheel changes, enables the pilot to be possible nimbly to operate motor turning facilely, reduced the labor intensity, enhanced the travel curity.
The hydraulic pressure boost steering system from invented already had about half century history to the prent, might say was one kind of more perfect system, becau its work reliable, the technol
ogy mature still widely is applied until now. It takes the power supply by the hydraulic pump, after oil pipe-line control valves to power hydraulic cylinder feed, through the connecting rod impetus rotation gear movement, may changes the boost through the change cylinder bore and the flowing tubing head pressure size the size, from this achieved changes the boost the function. The traditional hydraulic pressure type power steering system may divide into generally according to the liquid flow form: Ordinary flow type and atmospheric pressure type 2 kind of types, also may divide into according to the control valve form transfers the valve type and the slide-valve type.
Along with hydraulic pressure power steering system on automobile daily popularization, the people to operates when the portability and the road feeling request also day by day enhance, however the hydraulic pressure power steering system has many shortcomings actually: ①Becau its itlf structure had decided it is unable to guarantee vehicles rotates the steering wheel when any operating mode, all has the ideal operation stability, namely is unable simultaneously to guarantee time the low speed changes the portability and the high speed time operation stability; ②The automobile changes the
characteristic to drive the pilot technical the influence to be rious; ③The steering ratio is fixed, caus the motor turning respon characteristic along with changes and so on vehicle speed, trans
ver acceleration to change, the pilot must aim at the motor turning characteristic peak-to-peak value and the pha change ahead of time carries on certain operation compensation, thus controls the automobile according to its wish travel. Like this incread pilot's operation burden, also caus in the motor turning travel not to have the curity hidden danger; But hereafter appeared the electrically controlled hydraulic booster system, it increas the velocity generator in the traditional hydraulic pressure power steering system foundation, enables the automobile along with the vehicle speed change automatic control force size, has to a certain extent relaxed the traditional hydraulic pressure steering system existence question.
At prent our country produces on the commercial vehicle and the pasnger vehicle us mostly is the electrically controlled hydraulic pressure boost steering system, it is quite mature and the application widespread steering system. Although the electrically controlled hydraulic rvo alleviated the traditional hydraulic pressure from certain degree to change between the portability and the road feeling contradiction, however it did not have fundamentally to solve the HPS system existence insufficiency, along with automobile microelectronic technology development, automobile fuel oil energy conrvation request as well as global initiative environmental protection, it in aspect and so on arrangement, installment, leak-proof quality, control nsitivity, energy consumption, attriti
on and noi insufficiencies already more and more obvious, the steering system turned towards the electrically operated boost steering system development.
手工编篮子The electrically operated boost steering system is the prent motor turning system development direction, its principle of work is: EPS system ECU after comes from the steering wheel torque nsor and the vehicle speed nsor signal carries on analysis processing, controls the electrical machinery to have the suitable boost torque, assists the pilot to complete changes the operation. In the last few years, along with the electronic technology development, reduces EPS the cost to become large scale possibly, Japan nds the car company, Mitsubishi Car company, this field car company, US's Delphi automobile
system company, TRW Corporation and Germany's ZF Corporation greatly all one after another develops EPS.Mercedes2Benz and Siemens Automotive Two big companies invested 65,000,000 pounds to u in developing EPS, the goal are together load a car to 2002, yearly produce 300 ten thousand ts, became the global EPS manufacturer. So far, the EPS system in the slight pasnger vehicle, on the theater box type vehicle obtains the widespread application, and every year by 300 ten thousand speed development.
Steering is the term applied to the collection of components, linkages, etc. which allow for a vesl (ship, boat) or vehicle (car) to follow the desired cour. An exception is the ca of rail transport by which rail tracks combined together with railroad switches provide the steering function.
自我评价500字The most conventional steering arrangement is to turn the front wheels using a
hand–operated steering wheel which is positioned in front of the driver, via the steering column, which may contain universal joints to allow it to deviate somewhat from a straight line. Other arrangements are sometimes found on different types of vehicles, for example, a tiller or rear–wheel steering. Tracked vehicles such as tanks usually employ differential steering — that is, the tracks are made to move at different speeds or even in opposite directions to bring about a change of cour.
Many modern cars u rack and pinion steering mechanisms, where the steering wheel turns the pinion gear; the pinion moves the rack, which is a sort of linear gear which meshes with the pinion, from side to side. This motion applies steering torque to the kingpins of the steered wheels via tie rods and a short lever arm called the steering arm.
南瓜蛋糕的做法
Older designs often u the recirculating ball mechanism, which is still found on trucks and utility vehicles. This is a variation on the older worm and ctor design; the steering column turns a large s
饮水困难中药可以放糖吗crew (the "worm gear") which meshes with a ctor of a gear, causing it to rotate about its axis as the worm gear is turned; an arm attached to the axis of the ctor moves the pitman arm, which is connected to the steering linkage and thus steers the wheels. The recalculating ball version of this apparatus reduces the considerable friction by placing large ball bearings between the teeth o f the worm and tho of the screw; at either end of the apparatus the balls exit from between the two pieces
思念古诗

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