260results about How to "High efficiency transmission" patented technology

The invention discloses a dynamic-coupling electric control power gear shift hybrid power system and relates to the technical field of automobiles. The system comprises an engine, an integrated starter generator, a main driving motor, a transmission coupling gear shift driving unit and wheels, wherein the engine is connected with the integrated starter generator and is used for outputting power to the integrated starter generator; the integrated starter generator utilizes the power output by the engine to generate electricity; the integrated starter generator starts the engine and outputs power together with the engine; and the engine and the integrated starter transfer coupled driving forces to the wheels by virtue of the transmission coupling gear shift driving unit. The dynamic-coupling electric control power gear shift hybrid power system is compact in structure and efficient in transmission, dispenses with a clutch device, and can be used for realizing the working mode switchover and gear shift without power failure of the hybrid power system.

The invention discloses a fire-reconnoitering and fire-extinguishing robot. The fire-reconnoitering and fire-extinguishing robot comprises a caterpillar chassis, a fire-extinguishing water cannon anda reconnoitering mechanism, wherein the fire-extinguishing water cannon and the reconnoitering mechanism are arranged on the caterpillar chassis; the caterpillar chassis is composed of a chassis body,a chassis shell, a suspension cross beam, driving wheels, a driven wheel set, support belt wheel sets, bearing wheel sets, damping plate sets, elastic components, an approach wheel set, tensioning mechanisms, an obstacle avoidance assembly, a warning assembly, a driving assembly, a controller, a wireless transmission assembly, caterpillar assemblies, a dustproof cover plate, searchlights and a lithium battery. Through the fire-reconnoitering and fire-extinguishing robot, the problem of slippage and removal between the driving wheels and the caterpillar is solved; the efficient transmission between the driving wheels and the caterpillar is achieved; the adhesion performance between a suspension system with the caterpillar in the obstacle surmounting process is ensured; the stability of therobot when surmounting the obstacles and climbing can be also improved; the function of tensioning the suspension system on the robot is achieved; the safety and the stability of movement of the robot are further improved; the maintenance difficulty and the usage cost of the robot are reduced.

The invention discloses a self-propelled installation type ring cutting device for building pipes, which includes a mobile installation module and a rotary ring cutting module. The inner side is provided with a limited installation ring to the right, and the inner side of the limited installation ring is provided with six sets of clamping and moving installation mechanisms at equal angles. The rotary ring cutting module is arranged on the outside of the supporting mobile installation cylinder. The rotating mechanism on the outside of the mobile installation cylinder and the power ring cutting mechanism installed at the same angle on the left end thereof, the rotation mechanism includes the I-shaped rotating guide rail installed on the outside of the supporting mobile installation cylinder, and the outer side of the I-shaped rotating guide rail is provided with a package and a rotating support Installing the cover, the invention has the advantages of novel structure, compact appearance, high-efficiency transmission, fast and stable operation, neat cutting surface, and cutting process blocks.

The invention discloses a cognitive radio based communication network system in an intelligent power grid and a networking method. The system comprises a sensor node, a convergence node and a backbone network, a radio communication module in the sensor node comprises a cognitive selection control module, and a ZigBee radio frequency module with a radio communication function and a 230MHz radio frequency module. The cognitive selection control module periodically detects channel availability of empty frequency ranges in a network, and enters the radio modules corresponding to the selected frequency ranges for communication if the channel availability meets communication requirements, the sensor node senses frequency spectrum emptiness and selects proper frequency ranges to communicate with the convergence node, and the convergence node collects and compresses uploaded data and uploads the data to the backbone network on the basis of power line carrier waves. By combining the 2.4GHz frequency range with the 230MHz frequency range, applying cognitive radio into transmission of the intelligent power grid to sense current frequency spectrum occupancy, and automatically switching among multiple frequency ranges, intelligentized and efficient data transmission is realized.

A shear cross type mechanical lifting apparatus for the stage or orchestra pit features that the travelling wheels are respectively installed to top end of external supporting frame and the bottom end of internal supporting frame for travelling respectively along the track under top beam and the track on base, a transverse pull structure is connected between two axles of lower travelling wheels, a large screw bolt near the driver set is supported by UCP bearing, and the energy-accumulating spring set has the spring sleeving on telescopic upper guide tube and lower guide tube.

The invention relates to a dual-motor multi-mode driving system of an electric tractor and a control method thereof; the dual-motor multi-mode driving system comprises an electromagnetic clutch, an A motor, a B motor, an A switching motor, a PTO high-low gear switching motor, a differential speed lock switching motor, I-gear and II-gear shifting motors, III-gear and IV-gear shifting motors, a B switching motor and a differential speed lock. The electric tractor is driven by the A motor and the B motor; after switching gears, the two motors are meshed and driven by a gear for respectively providing power output and driving wheel power. According to different positions of the control switch in the driving system, the driving system is under different power driving modes. According to the working unit information given by a complete controller, the power driving mode of the driving system is determined. The system and the method can fully display the performance of the tractor power driving system based on the dual-motor, flexibly switch according to the working condition and the motor state, and reach the purpose of enhancing the cruising ability and high-efficient driving.

The invention discloses a minimally invasive surgical wire driving and four-freedom surgical tool which comprises a tool connecting rod, wherein one end of the tool connecting rod is connected with the tail end of the tool, and the tail end of the tool comprises a main tool body; the rear end of the main tool body is connected with a main body driving wheel; the front end of the tool connecting rod is provided with a rear shaft pin; both sides of the rear shaft pin are respectively provided with two rear driving wheels which are connected with the main tool body of the tail end of the tool through the main body driving wheel in the middle of the two rear driving wheels; the middle part of the main tool body is provided with two middle driving shafts with middle driving wheels; the front end of the main tool body is provided with a front shaft pin which is connected with a tool pliers body through two pliers body driving wheels arranged on the tool pliers body; each pliers body drivingwheel is fixedly connected with one end of a front wire rope and divides the front wire rope into two parts, and one part is turned for one time, while the other part is turned for two time through the middle wheels. The tool realizes long-distance driving by adopting the wire rope, thereby eliminating return differences and guaranteeing reliable driving.

The invention provides a composite inner cone output planetary cone type stepless variable speed unit which has the technical scheme that a first input small gear ring 21 is connected with an input shaft 1; a first output planet carrier 22 is connected with the matched first input small gear ring 21, a first connecting big gear ring 24 and a first output small gear ring 25 by two groups of planetary gears 23 on the first output planet carrier 22; a second output planet carrier 22 is connected with a matched second input small gear ring 21, a second connecting big gear ring 24 and a second output small gear ring 25 by two groups of planetary gears 23 on the second output planet carrier 22; a second output small gear ring 25 is connected with the input end 31 of an inner cone output planetary cone type stepless variable speed unit 3; and the output end 32 of the inner cone output planetary cone type stepless variable speed unit 3 and all output planet carriers 22 are connected with input gears 41 of respectively matched gear pairs 4.

The invention provides a composite box grind type hydraulic coupler. The key points of the technical scheme are that: an input gear ring 21 is connected with an input shaft 1; a connecting planet carrier 23 is connected with the input gear ring 21, an input large gear ring 22, an output large gear 24 and an output gear 25; the output large gear 24 is connected with an output small gear 28 and an output shaft 3; the output gear 25 is connected with an input gear 27; an output planet carrier 26 is connected with the input gear 27 and the output small gear 28 and is connected with an input gear pair 4; the input gear pair 4 is connected with a speed change mechanism 5; the speed change mechanism 5 is connected with a box grind type hydraulic coupler 6; the box grind type hydraulic coupler 6 is connected with an output gear pair 8; and the output gear pair 8 is connected with a fixed one-way clutch 7 and the input large gear ring 22.

The invention relates to an intelligent manipulator, a bidirectional walking mechanism thereof and a full-automatic intelligent vending device, wherein the intelligent manipulator comprises a mountingsupport; a rotary base seat is arranged at the lower part of the mounting support; the mounting support can slide back and forth along the axial direction of the rotary base seat; the manipulators which can move towards or away from each other to clamp or loosen goods are arranged on the mounting support; the manipulators are positioned above the rotary base seat; and a goods supporting table forloading the goods is arranged on the rotary base seat. The invention aims to provide the intelligent manipulator, the bidirectional walking mechanism thereof and the full-automatic intelligent vending device which are arranged outside a vending machine, are convenient to mount and maintain, and have high goods picking efficiency.

The invention provides a composite type hydraulic torque converter with an external overflow valve. The technical scheme comprises the following key points: a double-star planet carrier 21 is connected with a pinion 22 and a coupling gear ring 23; a coupling planet carrier 24 is connected with the coupling gear ring 23, an output pinion 25 and an input gear ring 26; the output pinion 25 is connected with an output shaft 3; an output planet carrier 27 is connected with the output pinion 25, the input gear ring 26, a plurality of components outside the composite type hydraulic torque converter and an input end 41 of a speed change mechanism 4; an output end 42 of the speed change mechanism 4 is connected with the double-star planet carrier 21, an input gear 51 of an input gear pair 5, and an output end 72 of a fixed one-way clutch 7 respectively; an output gear 52 of the input gear pair 5 is connected with an input end 61 of the hydraulic torque converter 6 with the external overflow valve; an output end 62 of the hydraulic torque converter 6 is connected with an input gear 81 of an output gear pair 8; an output gear 82 of the output gear pair 8 is connected with an input end 91 of a one-way clutch 9; and an output end 92 of the one-way clutch 9 is connected with the pinion 22 and an input shaft 1.

A hydraulic mechanical transmission with the auxiliary steering function comprises an input shaft, a mechanical transmission mechanism, a hydraulic transmission mechanism, a double-planet-row mechanism, a single-planet-row mechanism, a left driving device and a right driving device. The input shaft is connected with the mechanical transmission mechanism and the hydraulic transmission mechanism; the mechanical transmission mechanism and the hydraulic transmission mechanism drive the double-planet-row mechanism at the same time; the double-planet-row mechanism is connected with the single-planet-row mechanism; the double-planet-row mechanism drives the right driving device; and the single-planet-row mechanism drives the left driving device. The hydraulic mechanical transmission has the beneficial effects that straight driving and steering of a vehicle are achieved through cooperation of the mechanical transmission and hydraulic transmission; the hydraulic mechanical transmission can be used as a straight driving brake of the vehicle and also can be used as an adjusting device in the steering process of the vehicle, and the steering performance is excellent; in the straight driving process, efficient transmission is achieved; and in the steering process, stepless steering is achieved, and the steering radius can be precisely controlled according to different curve roads.

The invention provides an impedance matching method based on circuit duty ratio. The method comprises the following steps: using a Boost impedance transformer, changing duty ratio of the Boost impedance transformer to realize impedance matching, and determining a relation between an equivalent load and the duty ratio of the Boost impedance transformer; regulating the duty ratio of the Boost impedance transformer, enabling the equivalent load to be maintained around an optimal load, and realizing maximal-efficiency transmission of a WPT system. By regulation of the duty ratio, the equivalent load is enabled to be maintained around the optimal load, and consequently, maximal-efficiency transmission is realized. By regulating the duty ratio a of a MOS tube in the Boost impedance transformer,R2 can be maintained to be almost unchanged, and consequently, transmission power and efficiency of the system are stabilized. But if power change is needed for the load, the load power can be changedthrough changing input voltage Vin. So, with the Boost impedance transformer, impedance matching is realized through changing the duty ratio of the Boost impedance transformer, the transmission efficiency of the WPT system can be stabilized, and the method is suitable for application occasions where the load has high voltage, low current and relatively high equivalent impedance value.

The invention relates to a wearable hand mechanical exoskeleton with auxiliary grasping and rehabilitation training functions and belongs to the technical field of medical rehabilitation instruments.The wearable hand mechanical exoskeleton comprises an arm ring and a hand support which are flexibly connected, wherein the hand support comprises a palm skeleton, a thumb skeleton and other four-finger skeleton; the thumb skeleton and the other four-finger skeleton are rotationally connected with the palm skeleton; the four-finger skeleton comprises three phalanges which are connected in a rotating manner; a torsion spring is arranged at a rotary joint of the four-finger skeleton and the palm skeleton and the rotary joint between adjacent phalanges; one side of the palm skeleton is provided with a rotating shaft frame, the rotating shaft frame is provided with a rotating shaft parallel to the palm skeleton, and the thumb skeleton is rotatably connected with the rotating shaft; a gear steering engine and a pull rope steering engine are arranged above the palm skeleton, and the pull rope steering engine is connected with the four-finger skeleton through the pull rope; and an output endof the gear steering engine is provided with a driving gear, and the rotating shaft is provided with a driven gear. The wearable hand mechanical exoskeleton with the auxiliary grasping and rehabilitation training functions has the advantages of being simple and portable in structure, lower in cost, high in transmission efficiency, and capable of effectively promoting rehabilitation of hand jointsof the disabled senior citizens.

The invention discloses an integrated magnetic drive pump comprising a pump body, a connecting rack, a motor and a bottom plate; the pump body, the connecting rack and the motor are fixedly connected in sequence; the pump body and the motor are respectively fixedly connected with the bottom plate; a main shaft is arranged in the pump body; the front end of the main shaft is provided with an impeller nut and an impeller; the impeller is fixedly connected with the main shaft through the impeller nut; a shaft sleeve and an impeller sleeve are arranged outside the main shaft; the front end of the impeller sleeve is provided with a stop ring; the impeller sleeve is fixedly connected with the impeller through the stop ring; the rear end of the main shaft is provided with an inner magnet and a rear nut, wherein the inner magnet is fixedly connected with the main shaft through the rear nut; an isolation sleeve and an outer magnet are arranged outside the inner magnet in sequence; the integrated magnetic drive pump is hermetically sealed, has no pollution, is high in efficiency and energy saving, can pump medium with no leakage, thus thoroughly solving shaft seal leakage of the mechanical drive pump.

The invention provides a compound type hydraulic torque converter with an overflow valve arranged externally. According to the technical scheme, the compound type hydraulic torque converter with the overflow valve arranged externally is characterized in that a small input gear ring 25 and an input gear pair 6 are connected with an input shaft 1, a large output gear ring 26 is connected with an output gear pair 3, the output gear pair 3 is connected with a collector planet carrier 27, the input gear pair 6 is connected with a large input gear ring 22, a small output gear ring 23 is connected with a hydraulic torque converter body 5 with the overflow valve arranged externally, the hydraulic torque converter body 5 with the overflow valve arranged externally is connected with a one-way clutch 4 and a collector gear 29, a fixed planet carrier 21 and a fixed planet carrier 24 are connected with a fixed component through connecting shafts 7, and a large output gear ring 28 is connected with an output shaft 8.

The invention provides a compound type torque limited type aqueous medium fluid coupling and a starter. According to the technical scheme, an input shaft (1) is connected with a starter gear pair (13) and an overrun clutch (14), and the overrun clutch (14) is connected with a first one-way clutch (10) and a starter gear pair (12); the first one-way clutch (10) is connected with an input pinion (21), an output planet carrier (22) is connected with a connecting frame (7) and an output gear pair (9), and a connecting shaft (8) is connected with an idle gear engaging mechanism (6), the output gear pair (9) and an electromagnetic clutch (11); the electromagnetic clutch (11) is connected with the starter gear pair (13), the idle gear engaging mechanism (6) is connected with an output shaft (5), and the connecting frame (7) is connected with an input gear ring (28); an output gear ring (27) is connected with an input planet carrier (25), a small output gear ring (24) is connected with a second one-way clutch (4), and the second one-way clutch (4) and the first one-way clutch (10) are connected with the torque limited type aqueous medium fluid coupling (3); and the torque limited type aqueous medium fluid coupling (3) is connected with a large input gear (23).

The invention provides a composite gear chain type stepless variable speed unit which has the technical scheme that a first input wave generator 21 is connected with an input shaft 1 and connected with a first output flexible gear 22 and a first connecting rigid gear 23; the first connecting rigid gear 23 is connected with the first output flexible gear 22 and a first output wave generator 24; the first output wave generator 24 is connected with a second input wave generator 21; the second input wave generator 21 is connected with a second output flexible gear 22 and a second connecting rigid gear 23; the second connecting rigid gear 23 is connected with the second output flexible gear 22 and a second output wave generator 24; the second output wave generator 24 is connected with the input end 31 of a gear chain type stepless variable speed unit 3; and the output end 32 of the gear chain type stepless variable speed unit 3, the first output flexible gear 22 and the second output flexible gear 22 are respectively connected with input gears 41 of matched gear pairs 4.

The invention provides a compound type double guide wheel hydraulic torque converter. The technical scheme comprises the following key points that: a compound planet carrier 21 is connected with an input small gear 22 and an output gear 23; the output gear 23 is connected with an input planet carrier 24; the input planet carrier 24 is connected with an output gear ring 25 and an output big gear 26; the output gear ring 25 is connected with an input gear ring 28; an output planet carrier 27 is connected with the input gear ring 28 and an output small gear ring 29, and is also connected with the output big gear 26 and an output shaft 10; a connecting frame 3 is connected with the output small gear ring 29, other components and a variable speed gear 4; the variable speed gear 4 is respectively connected with the compound planet carrier 21, an input gear pair 5 and a fixed one-way clutch 7; the input gear pair 5 is connected with a double guide wheel hydraulic torque converter 6; the double guide wheel hydraulic torque converter 6 is connected with an output gear pair 8; the output gear pair 8 is connected with a one-way clutch 9; and the one-way clutch 9 is respectively connected with the input small gear 22 and an input shaft 1.

The invention discloses a rotary speed reduction device for an automobile crane, which mainly comprises a motor flange, a brake, a planetary gear reducer, an output gear, a bearing and a bearing pedestal, wherein the brake comprises a shell, a brake piston, a brake spring, kinematic / static friction plates, a combined seal, a gasket and a retainer ring; the planetary gear reducer is transmitted by a three-stage planetary gear train composed of a spline shaft sleeve, big, medium and small sun gears, big, medium and small planetary carriers, big, medium and small planetary gears, big and small internal gears and the like; and the output gear is supported in the bearing pedestal through the bearing, the upper part of the output gear is provided with a spline shaft and is connected with an internal splined hole of the big planetary carrier, and the lower part of the output gear is provided with an external gear. The rotary speed reduction device adopts three-stage planetary gear speed reduction to effectively improve a reduction ratio and the speed reduction and torque increase capability, improve the brake efficiency and the brake reliability, fulfill the aim of high efficiency and low-noise transmission, and effectively solve the problems of the conventional rotary speed reduction device used in the automobile crane. The rotary speed reduction device has the advantages of simple structure, large reduction ratio, high speed reduction and torque increase capability, and high sealing property.

The invention discloses surgical scissors for a surgical robot, comprising two scissor blades in the same structure. Either scissor blade comprises a surgical scissor shank and a surgical scissor blade, wherein the two surgical scissor shanks are connected through a shaft, the bottom wall of the surgical scissor blade is connected with a reverse-concave clamping spring, a protrusion is arranged at the bottom of either outer side wall of the reverse-concave clamping spring, the upper part of the surgical scissor shank is provided with a concave fixed block, a socket is arranged at the dent of either inner side wall of a groove of the concave fixed block, the reverse-concave clamping spring is in a shape matched with the shape of the groove of the concave fixed block so that the reverse-concave clamping spring can be inserted in the groove, and the two protrusions of the reverse-concave clamping spring are respectively inserted in the groove to be clamped and matched. The invention has the advantages that the tool front end of the surgical scissors can be replaced with different types and different sizes aiming at different surgical parts and different surgical operations so as to smoothly finish operations.

The invention relates to an underactuated flexible gripper, and belongs to the technical field of agricultural intelligent equipment. The underactuated flexible gripper includes a gripper base, guiderods, a palm, a palm-adjacent finger, a fingertip structure, a driving device and a control device, wherein the fingertip structure includes a fingertip, a ball, a compression spring, a spring limit device, a slider limit surface, a slide groove and a rubber cushion, the driving device includes a stepper motor, a coupling, a ball screw, a disc slider, a curved push rod, the guide rods, a connecting rod I, a connecting rod II, a connecting rod III and a slide bar, and the control device comprises a controller and a pressure sensor. The underactuated flexible gripper is used to solve the problems that the fruit harvesting rate is not high and fruits are easily damaged.

The invention provides a composite centripetal turbine type hydraulic torque converter. The key point of the technical scheme is that: a connection planet carrier 23 is connected with an input gear 21, an input gear ring 22, an output big gear ring 24 and an output gear 25; the output gear 25 is connected with an output shaft 3; an input planet carrier 27 is connected with the output big gear ring 24, the output gear and an output gear ring 26; a connection carrier 29 is connected with the output gear ring 26, a plurality of components except for the composite centripetal turbine type hydraulic torque converter and the input end 41 of a speed change mechanism 4; the output end 42 of the speed change mechanism 4 is connected with the input gear 22, an input gear 51 of an input gear pair 5 and the output end 72 of a fixed one-way clutch 7 respectively; an output gear 52 of the input gear pair 5 is connected with the input end 61 of the centripetal turbine type hydraulic torque converter 6; the output end 62 of the centripetal turbine type hydraulic torque converter 6 is connected with an input gear 81 of an output gear pair 8; an output gear 82 of the output gear pair 8 is connected with the input end 91 of a one-way clutch 9; and the output end 92 of the one-way clutch 9 is connected with the input gear 21 and an input shaft 1 respectively.

The invention relates to an angle adjustable nursing mattress, comprising a mattress body. The mattress body includes at least two saturated mattresses and a folding portion including a plurality of compressible ridges penetrating the mattress body in a height direction disposed between adjacent two saturated mattresses in a continuous manner. Wherein the at least one saturated cushion body is capable of forming an angle with an adjacent saturated cushion body based on the displacement of the at least one saturated cushion body that is not parallel to the plane in which the at least one saturated cushion body is located and bends or unfolds along the plane in which the saturated cushion body is located; The angle can be adjusted according to the displacement. Therefore, the mattress adoptsan integrated smoothing mattress surface, eliminates the discomfort feeling caused to the patient by the discontinuous seams between mattresses when the mattress is folded over, can improve the psychological pressure and environmental influence of the long-term bed-ridden patient, and is conducive to promoting the treatment and rehabilitation process of the patient.

The present invention belongs to the field of hydrological observation technology, in the concrete, it is an anchoring equipment of water environment automatic observation system for long-period automatic observation in set accurate place of some water area. Said anchoring equipment is characterized by that the lower end of main steel wire rope is equipped with weight sunken down into the water bottom, and placed in position-fixed place, the upper end of said main steel wire rope is fastened and fixed on the platform by means of electric winch, and stretched and fixed on the platform by means of obliquely-pulling steel wire rope, pulley and electric winch, and the main steel wire rope is pulled into perpendicular line by means of weight and pulley, and is positioned perpendicularly to sea bottom in the sea level which has a certain distance from the platform, and the observation system box is fixed in the proper position on the main steel wire rope.

The invention belongs to the technical field of wireless communication, specifically a microwave transmission system. The microwave transmission system comprises an input converter, an emission system, a receiving system, and an output converter, wherein the input converter is used for converting a digital control signal and a digital sensor signal of a micro robot into two paths of signals: an analogue control signal and an analogue sensor signal; the emission system is used for overlapping and modulating the analogue control signal and the analogue sensor signal into the same frequency band, and then outputting and sending the signals; the receiving signal is used for receiving the signals sent by the emission system, separating the signals to recover the signals as the analogue control signal and the analogue sensor signal, and outputting the signals to the output converter; the output converter is used for converting the analogue control signal and the analogue sensor signal into the digital control signal and the digital sensor signal. The transmission system disclosed by the invention is safer and more reliable to the signal transmission, strong in interference rejection, and good in secrecy performance.

The invention discloses an adjustable wireless charging system which is divided into a transmitting end and a receiving end, the transmitting end is provided with a transmitting end resonance network,the transmitting end resonance network at least comprises a transmitting coil and a first capacitor, the receiving end is provided with a receiving end resonance network, and the receiving end resonance network at least comprises a receiving coil and a second capacitor. The system further comprises correction devices which are respectively a transmitting end correction capacitor, a receiving endcorrection capacitor, a transmitting end correction inductor and a receiving end correction inductor; the transmitting end correction capacitor is connected with the first capacitor in parallel and provides a variable capacitance value for the transmitting end; the receiving end correction capacitor is connected with the second capacitor in parallel and provides a variable capacitance value for the receiving end; the transmitting end correction inductor is connected with the transmitting coil in series and provides a variable inductance value for the transmitting end; the receiving end correction inductor is connected with the receiving coil in series and provides a variable inductance value for the receiving end; the driving frequency of an input source of the transmitting end resonance network, the resonance frequency of the transmitting end resonance network and the resonance frequency of the receiving end resonance network are all 79kHz-90kHz. According to the adjustable wireless charging system, the total capacitance value or the total inductance value of the transmitting end resonance network and the receiving end resonance network is adjusted through the correction devices,so that the resonance stability is ensured, the interference of an environmental electromagnetic field is reduced, and the maximum efficiency transmission and the minimum interference noise are obtained.

The invention provides a composite impeller type hydraulic torque converter. The key point of the technical scheme is that: a connecting planet carrier 23 is connected with a bull gear 21, an input pinion gear 22, a connecting pinion gear 24 and an output gear 27; the output gear 27 is connected with an output shaft 3; the connecting pinion gear 24 is connected with an input planet carrier 25; the input planet carrier 25 is connected with the output gear 27 and an output pinion gear 26; a connecting rack 29 is connected with the output pinion gear 26, a plurality of elements apart from those of the invention are connected with the input end 41 of a speed change mechanism 4; the output end 42 of the speed change mechanism 4 is connected with the bull gear 21, an input gear 51 of an input gear pair 5 and the output end 72 of a fixed one-way clutch 7; an output gear 52 of the input gear pair 5 is connected with the input end 61 of an impeller type hydraulic torque converter 6; the output end 62 of the impeller type hydraulic torque converter 6 is connected with an input gear 81 of an output gear pair 8; an output gear 82 of the output gear pair 8 is connected with the input end 91 of a one-way clutch 9; and the output end 92 of the one-way clutch 9 is connected with the input pinion gear 22 and an input shaft 1.

The invention provides a compound EPS control system and method used for a distributed driving electric automobile. The compound EPS control system comprises a steering disc, an input shaft, a torqueand angle sensor, a steering wheel assisted motor, a clutch and speed reduction mechanism, a steering output shaft, a steering gear, a rack, a steering track rod, steering wheels, an ECU, a rear wheelangle sensor, a steering motor, a worm and gear, a rear wheel steering rack, a rear wheel steering rack, a rear wheel steering track rod and rear wheels. By means of the compound EPS control system and method used for the distributed driving electric automobile, the four-wheel independent driving electric automobile has high handling stability of a four-wheel steering wheel while bringing EPS advantages into play and has the advantages of being safety in driving, environmentally friendly, high in reliability, short in driving transmission chain, efficient in transmission and compact in structure and saving energy.