126results about How to "Guaranteed maneuverability" patented technology

The invention discloses a catheter robot system for a minimally invasive interventional operation in a blood vessel, relating to a robot system for assisting the minimally invasive interventional operation in the blood vessel, which aims to lower the radiation hazard to patients and doctors on site, realize compartmental interventional operation at different sites and feed back the conveying force of a catheter. A main hand handle and a computer mainframe are arranged in a control room; a control cabinet, a catheter handle, master and slave intervention devices, a magnetic field generator and a controllable catheter are arranged in an operation room; a pose signal of the main hand handle is delivered to the control cabinet after processed by the computer mainframe; the control cabinet is internally provided with a motion control card and a driver; the motion control card receives a command to send an instruction to the driver; the driver delivers a control signal to the motors of the master and slave intervention devices, thereby controlling the intervention devices to realize the pushing / pulling, rotation and bending operations of the controllable catheter; a pose sensor acquires pose information on a controllable bent section, and the pose signal is delivered by the motion control card to the computer mainframe for signal processing. The invention is used for the minimally invasive interventional operation in the blood vessel.

The invention discloses a passenger car air suspension control system. The passenger car air suspension control system comprises a height sensor, a speed sensor, a pressure sensor, an air inflation circuit, a solenoid valve group, a display and set module and a main controller, wherein the air inflation circuit is used for opening and closing of an air bag, and the solenoid valve group is used for opening and closing of an air deflation circuit of the air bag; the display and set module is used for setting a suspension system parameter and choosing work modes; and the main controller is used for receiving the height information of a car body, speed information, the pressure information of an air storage tank, suspension system parameter information and work mode information and controlling the opening and closing of the solenoid valve group according to the information. According to the passenger car air suspension control system, the various sensors are utilized to monitor the corresponding parameters of a passenger car, the functions of a high position mode, a middle position mode, a low position mode, a side knelt mode, a high speed height mode, chassis stability, fault query, online parameter calibration and the like are achieved, different road conditions can be adapted, vehicle speed requirements can be met, and perfect maneuverability of the passenger car is guaranteed while riding comfort and comfort of the car are improved.

The embodiment of the invention discloses an electronic-controlled braking system and a control method and device thereof. The control method comprises the following steps that when a signal of a pedal travel sensor is detected to be stable, a first movement time of a gear rack is recorded, a target position of the gear rack is determined according to the signal of the pedal travel sensor, and a first time threshold value is determined according to the target position; when the first movement time reaches the first time threshold value, a current position of the gear rack is obtained; the deviation between the current position and the target position is determined; when the deviation exceeds the given control accuracy threshold of a main control loop, an auxiliary control loop is adopted to replace the main control loop to conduct braking treatment, and the problem that vehicles are unable to restart caused by the electronic-controlled braking system (EBS) being forced to brake or braking difficulty caused by the EBS being forced to cut off power after the traditional EBS algorithm is abnormal is avoided; and manipulative capability of the vehicles is guaranteed through the redundant electronic-controlled algorithm framework, and the risk of traffic accidents of the vehicles is reduced.

The invention discloses a steering control method of a drive-by-wire hydraulic steering system of a commercial vehicle. The drive-by-wire hydraulic steering system comprises a steering wheel module, amechanical steering module, a hydraulic transmission module and a control module. An electronic control unit (ECU) in the control module outputs signals to control the operation of a hydraulic pump driving motor and an electromagnetic reversing valve, and drives a connecting rod mechanism to change the turning angle of wheels by changing oil pressure on two sides of a piston of a hydraulic cylinder; and the ECU also outputs current signals and feeds corresponding steering feel back to a driver through a steering feel motor to complete drive-by-wire hydraulic steering. When the drive-by-wire hydraulic steering fails, the ECU outputs commands to engage a failure clutch to start the mechanical steering module. The steering control method of the drive-by-wire hydraulic steering system of thecommercial vehicle is capable of intelligently setting a variable transmission ratio so as to improve the response ability and safety of the steering system of the commercial vehicle and improve the steering performance of the vehicle in general. In addition, in the event of failure of the drive-by-wire hydraulic steering, the steering system can be switched to a reliable mechanical transmission so as to ensure the operability of vehicle steering by the driver in emergencies and ensure the safety of the vehicle.

The invention relates to a hybrid power multi-rotor type aircraft and a control method thereof. The hybrid power multi-rotor type aircraft comprises a plurality of propellers and a motor driving system, wherein the motor driving system comprises a plurality of motors; each motor drives one corresponding propeller to rotate; the hybrid power multi-rotor type aircraft further comprises an engine driving system and a driving mechanism; the engine driving system comprises an engine; an output torque of the engine and output torques of the motors are synthesized through the driving mechanism; and the synthesized torque can be used for driving the same corresponding propeller to rotate. According to the hybrid power multi-rotor type aircraft disclosed by the invention, by providing multiple power systems, adopting the driving mechanism to synthesize the output torques of the multiple power systems, and using the synthesized output torque to drive the propellers to rotate, the cruising power of the aircraft can be greatly improved; in addition, the structural complexity of the aircraft is not added; and meanwhile, the properties of controllability, maneuverability, safety and the like of the aircraft can be guaranteed.

The invention provides an automatic balancing system for an unmanned aerial vehicle. The automatic balancing system comprises a sensor, balancing liquid, liquid conveying pumps and containers for storing the balancing liquid, wherein the sensor is used for acquiring gravity center change data of the unmanned aerial vehicle, and the liquid conveying pumps are used for adjusting the weight of the balancing liquid in the containers according to the gravity center change data so as to keep the center of gravity of the unmanned aerial vehicle in a safe range. According to the automatic balancing system for the unmanned aerial vehicle, provided by the invention, for a load of fixed weight, the center of gravity of the unmanned aerial vehicle can be kept in the safe range through liquid conveying pump adjustment without using counterweights, so that the maneuverability and stability of the unmanned aerial vehicle are guaranteed; for a load of variable weight, the center of gravity of the unmanned aerial vehicle can be dynamically kept in the safe range through continuous adjusting by the liquid conveying pumps so as to guarantee the maneuverability and stability of the unmanned aerial vehicle.

The invention discloses an aerodynamic layout design method based on a variable-configuration aerospace vehicle. The aerodynamic layout design method comprises the steps that the low-speed datum layout and the high-speed datum layout of the variable-configuration aerospace vehicle are determined correspondingly; the geometrical shape of the variable-configuration aerospace vehicle is described ina parameterization mode through a state-type function method; a corresponding parameterization kinetic model is established through an engineering estimation method, models of different speed domainsare integrated based on the similarity criterion, and a corresponding agent model is established; the influence of the flight condition and aerodynamic layout change on the performance of a flight control system is determined through a sensitivity analysis method, and the stability boundary and system requirements of the variable-configuration aerospace vehicle are determined; and through full-speed-domain performance matching analysis, a variable-layout scheme of the variable-configuration aerospace vehicle is determined. By properly changing the wing configuration of the aerospace vehicle, it is guaranteed that the aerospace vehicle has the optimal aerodynamic layout at each mission stage, large envelope continuous flight under the minimum energy consumption is achieved, and the need ofintegrated design of the aerospace vehicle is met.

The invention discloses a state detection device used on a self-balancing two-wheeled vehicle and a state detection method. The state detection device used on the self-balancing two-wheeled vehicle comprises a first pressure sensor, a second pressure sensor, a signal processor, a first wireless transceiver, a second wireless transceiver, and a central control unit, wherein the first pressure sensor is used for measuring the pressure of a first tyre, the second pressure sensor is used for measuring the pressure of a second tyre, the signal processor is connected with the first pressure sensor and the second pressure sensor, the first wireless transceiver is connected with the signal processor, the second wireless transceiver is matched with the first wireless transceiver, the central control unit is connected with the second wireless transceiver and is used for receiving processed pressure data of the first tyre and pressure data of the second tyre and determining the current running state of the self-balancing two-wheeled vehicle according to a pressure changing value of the first tyre and a pressure changing value of the second tyre when the vehicle is in a previous state and when the vehicle is in a current state. According to the State detection device used on the self-balancing two-wheeled vehicle and the state detection method, the running state of the self-balancing two-wheeled vehicle can be judged.

The invention relates to a bus duct plug box and belongs to the technical field of electrical connection facilities. The plug box comprises a breaker arranged in a box body, the breaker is provided with a switching gate handle extending out of the upper surface of the breaker, a main rotary shaft is supported in the box body, one end of the main rotary shaft extends out of one side of the box body, the outer extending end of the main rotary shaft is fixedly connected with a rotary handle, the inner extending end of the main rotary shaft is fixedly connected with guide jaws, and the lower ends of the guide jaws horizontally extend to form poking fingers located on the two sides of the switching gate handle respectively. Due to adoption of the sideward arrangement structure, the upper portion of the breaker does not need to have space for holding rocker supports and other actuation components and the structure is compact. Additionally, points where the poking fingers exert force on the switching gate handle are gradually moved downwards in the poking process, the length of a resistance arm of the switching gate handle is reduced while the lengths of power arms of the guide jaws are kept unchanged, and it is guaranteed that follow-up performance of the switching gate handle is better.

The invention discloses a frame structure for a pure electric vehicle. The frame structure adopts a four longitudinal beam space structure, and consists of a middle-through-type H-type structure formed by double frame longitudinal beams and cross beams, side beam structures on the two sides of the frame, a front strengthening structure and a back battery cabin strengthening structure together. The middle H-type structure can ensure the rigidity of the whole vehicle body structure, and can effectively improve the torsion resistance of the frame; the front strengthening structure and the back battery cabin strengthening structure can effectively improve the safety of front collision and back collision, relieve deformation of a driving cabin when in collision, and provide safety protection for passengers at the greatest extent. Compared with the traditional frame structure, according to the technical scheme, the safety of front collision, side collision and back collision can be effectively improved, meanwhile the torsion resistance of the frame structure can be effectively improved, the mounting strength and the finished vehicle rigidity of a chassis system can be ensured, and the properties of the driving smoothness, the controllability, the trafficability and the like are all considered.

The invention discloses an electronic limited-slip differential and a control method thereof. A detection mechanism is used for collecting rotation speed information, accelerator pedal opening information, steering wheel corner information, lateral acceleration information and yaw velocity information and sending all the information to an electronic control unit; a work mode selection unit is used for selecting different work modes of the electronic limited-slip differential by a driver; and an electronic control unit is used for controlling an electromagnetic clutch, an auxiliary motor and a brake of an execution mechanism to work according to the received information and limiting the slip rates of driving wheels, thereby realizing electronic limited-slip differential velocity of the driving wheels on two sides. When the slip rate of the driving wheel on one side exceeds a set value, the auxiliary motor connected with a half-shaft of the drive axle works as a generator to apply a resistance moment to the half-shaft, so that the slip rate of the wheel is reduced, and a driving moment of the generator effectively acts on the wheel on the other side; and the brake is matched with the auxiliary motor to work in necessity, so as to apply a certain bake force to the wheels.

The invention relates to a vehicle-mounted pick-up stable platform. The platform adopts a potentiometer as a feedback element of a locking loop, a motor is controlled to move through the angular speed of gyro sensitive vector disturbance, the interference of vector movement is isolated, the drift of a gyro is inhabited, and the stability of a relatively inertial space of a payload is realized; moment increase is carried out by the control unit by adopting a photoelectric encoder and is visual and easy to operate, and the moment increase is carried out by adopting feed-forward control, therebyimproving the speed and the precision of the moment increase; and the manual locking and the automatic tracking of a moving object are realized by the platform by adopting an image tracking mode, thereby simplifying the work of operating personnel and effectively ensuring that stable and high-quality image information is obtained. The invention effectively isolates the interference caused by vehicle-mounted angular movement, inhabits the platform drift caused by the gyro, improves the dynamic performance of a system, and has important application value for the fields of film shooting and the like.

The invention relates to a sedan tire structure, in particular to a tire tread pattern structure of a sedan tire. The tire tread of the sedan meridian tire comprises central pattern blocks, lateral pattern blocks and tire shoulder pattern blocks, wherein the central pattern blocks are the longitudinal pattern blocks; the lateral pattern blocks and the tire shoulder pattern blocks are regularly arranged on the left side and the right side of the central pattern blocks from inside to outside in sequence; the central pattern blocks are positioned on the central line position of the tire tread; the same arched pattern ditch is spaced between the central pattern blocks and the lateral pattern blocks, between the two adjacent lateral pattern blocks, and between the two adjacent tire shoulder pattern blocks respectively; an inclined lateral pattern ditch is spaced between the two adjacent central pattern blocks; and a longitudinal circumferential pattern ditch is spaced between the lateral pattern blocks and the tire shoulder pattern blocks. The tire tread of the tire adopts mixed patterns, and has the advantages of sufficient braking force, good control performance and elegant appearance.

The invention discloses a dynamic inverse-based large-angle-of-attack control method for a fighter plane. For a large-angle-of-attack flying state, a time-scale separation method is adopted, the aircraft state variables are decomposed into two groups of subsystems based on different time scales, and a control law is solved by utilizing a dynamic inverse method respectively. According to the method, a control rudder surface deflection angle is deduced by aiming at the attitude angle speed loop, and the attitude angle speed is deduced by aiming at an airflow angle loop. According to the attitudeangle rate loop bandwidth selection, the influence of coordination control on factors such as side sliding is considered, and a frequency band bandwidth phase and the like are selected. Aiming at anairflow angle loop command model, a winding speed shaft roll angle instruction model is selected as a first-order model for meeting the flight quality requirement of the fighter plane, and an angle ofattack and a side slip angle instruction model are a second-order model. According to the method, the good tracking performance and stability of a flight control system under the large attack angle of the fighter plane are guaranteed, the dangerous states such as deep stall and tail rotation can be timely changed, and the method has good reference significance on practical application of engineering.

The invention discloses a tyre tread pattern structure for an engine driven two-wheel vehicle. The structure consists of a plurality of pattern units which are arranged in a symmetrically staggered mode along the equatorial surfaces of tyres. Each pattern unit comprises a main pattern ditch and an auxiliary pattern ditch; each main pattern ditch consists of a first main pattern ditch close to the equatorial surface, a third main pattern ditch close to the tyre shoulder and a second main pattern ditch connected with the first main pattern ditch and the third main pattern ditch; each auxiliary pattern ditch consists of a first auxiliary pattern ditch away from the first main pattern ditch, a third auxiliary pattern ditch close to the tyre shoulder and a second auxiliary pattern ditch connected with the first auxiliary pattern ditch and the third auxiliary pattern ditch; and each main pattern ditch and the corresponding auxiliary pattern ditches are obliquely formed in a variable-angle mode in the axial direction from a position close to the equatorial surface to the tyre shoulder, the widths of the front ends and the tail ends of the pattern ditches are arranged by adopting a decrement way, and expansion grooves are additionally formed in the front ends and the tail ends of the main pattern ditches and the auxiliary pattern ditches. The manipulation performance and the ground grasping performance are achieved when the engine driven two-wheel vehicle runs on the dry and wet ground.

The invention discloses a double-rotor aircraft with folding wings, and a control method of the double-rotor aircraft, and relates to the field of aircrafts. The double-rotor aircraft comprises a fuselage, and the two wings respectively positioned at the two sides of the fuselage, wherein the two wings are hinged with the fuselage and can rotate around the longitudinal axis of the fuselage; rotorsystems are respectively arranged at the ends, far away from the fuselage, of the two wings; the rotor systems use the periodic variable pitch generated by a built-in automatic tilter to change the aerodynamic forces and aerodynamic moments of rotors, thus realizing the control of the pitch, yaw and rolling motions of the aircraft. The aircraft uses the same set of operating system when operatingin a helicopter mode and an aircraft mode. Compared with the existing vertical take-off and landing aircraft applying two sets of operating systems, the double-rotor aircraft provided by the inventionis simpler and more reliable in design, and does not need a redundant operating mechanism no matter during vertical take-off and landing or flat flight; the utilization rate of the structural components of the aircraft is improved, and the excessive structural weight is reduced. The double-rotor aircraft with the folding wings is applicable to aerial photography and can also be used for individual military investigation.

The invention discloses a high-voltage interlocking detection device, a processing method and an automobile. The detection device comprises at least two high-voltage devices, at least two high-voltageinterlocking loop detection circuits and a controller, wherein one detection circuit is correspondingly connected with a high-voltage interlocking loop of one high-voltage device, and the controlleris connected with the at least two detection circuits; and the controller is used for acquiring voltage signals of the at least two detection circuits, determining whether a working state of the high-voltage device is abnormal or not according to the voltage signals, and making the automobile perform fault processing according to the working state of the high-voltage device. According to the embodiment of the invention, different processing measures can be taken according to the state of the current vehicle aiming at high-voltage interlocking loop faults of the different high-voltage devices so that the function of the whole automobile is reserved to the maximum extent while high-voltage safety is ensured, and the problem that driving control is influenced due to unexpected high-voltage power-off caused by a current high-voltage interlocking processing strategy is solved.

The invention discloses a pneumatic tire. A plurality of main ditches extending along the two side edges of a main tread to the middle part of the main tread are formed in the main tread; tread ribs in contact with the ground are formed between the two adjacent main ditches; with the circumferential central line of the main tread as reference, the main ditches positioned on the same side of the circumferential central line are uniformly distributed in parallel in the circumferential direction of the main tread; and the main ditches positioned on the two sides of the circumferential central line are arranged in a staggered and crossed manner; the internal end parts of the two main ditches positioned on the opposite sides of the circumferential central line and adjacent to each other in the circumferential direction of the main tread are intersected at the middle part of the main tread; by using a straight line, which is made to pass through any point at the external end part of the central line of the main ditch and extends in the axial direction of the tire, as an axial reference line, the distances between the central lines of the main ditches and the axial reference line are gradually increased from the external ends of the main ditches to the internal ends of the main ditches, and the widths of the main ditches are gradually reduced from the external ends of the main ditches to the internal ends of the main ditches. The running performance of the pneumatic tire under road conditions of dry land, wet land and snowfield is more excellent, and the pneumatic tire can sufficiently satisfy running demands of a vehicle under four-season road conditions.

The invention relates to a high-range self-propelled forest pest control spraying machine, consisting of a tractor (1), a medicine chest component, a hanging base (5), a spraying unit (6), an atomizing swing unit (7), a pneumatic system and an electric control system. A simple driving cab is arranged in the tractor (1); power is output by the tractor, so that one diesel engine is omitted; a gas storage cylinder of the tractor is used as a gas source and the spraying operation can be realized by one tractor driver, thereby the safety can be improved and the labor intensity can be reduced; by additionally arranging a driving cab, scattered liquid medicine can be effectively prevented from falling off on the body of an operator; the diameter of an air port can be reduced by adopting a high-pressure draught fan with small size and light weight, so that the injection range can reach over 20 m; and the materials of a machine chest is changed and glass fiber reinforced plastics are changed into a stainless steel material, the invention fully ensures that the medicine chest is not corroded by acid-base liquid medicine to avoid blocking the spray nozzle. The operation area is 50-60 hectares / 8hours and the vertical range is more than or equal to 20 m; and the average diameter of a fogdrop is 141 micrometers.

The invention relates to the technical field of vehicle control, in particular to a single pedal mode control method of a vehicle. The method comprises the steps: a single pedal mode control Map is constructed with the balance driving force of a vehicle in each vehicle speed section as the Z axis, the accelerator pedal opening degree as the Y axis and the current vehicle speed as the X axis; an exit threshold value K% of the single pedal mode control Map associated accelerator pedal opening degree is set; if the opening degree of the accelerator pedal is smaller than K%, the torque value of the single pedal mode control Map serves as the control torque of the single pedal mode; and if the accelerator pedal opening degree is larger than or equal to K%, the single-pedal mode is quitted, themaximum output torque corresponding to the current accelerator pedal opening degree is calculated through a normal driving algorithm according to the motor external characteristic curve, and the maximum output torque serves as the control torque of the vehicle. By means of the method, the single pedal mode is ensured to be quitted stably and rapidly when the urgent acceleration request of the driver is detected, corresponding driving force is provided to achieve driving actions such as acceleration overtaking or urgent avoidance, and controllability and safety of the vehicle are guaranteed.

The invention belongs to the robot power source control field and provides a robot power source management system and a control method. The system comprises a power supply, a power source management unit, a power source control circuit, a wireless communication module, a motion control module, a main controller, an execution unit and a sensor unit; the power supply is connected with the power source management unit and provides power sources required by each part of the robot; the power source management unit is connected with the power source control circuit and controls the power supply state of each part of the robot through the power source control circuit; the wireless communication module, the motion control module, the sensor unit and the execution unit are connected with the main controller; and the motion control module and a wireless communication chip are connected with the power source management unit, and therefore, in an emergency electricity quantity standby mode, a robot moves according to a wireless command received by the power source management unit, and the robot is controlled to return to be charged. With the robot power source management system and the controlmethod of the invention adopted, the continuous travel capacity of the robot is enhanced, and the maneuverability of the robot under a low electricity quantity condition can be guaranteed.

The invention belongs to the technical field of electric power operation climbing robots, and particularly relates to a maintenance robot with an online bolt retightening function. The maintenance robot comprises a main machine and an angle steel clamping assembly arranged on the main machine, wherein a bolt retightening device used for retightening a bolt is arranged at the head end of the main machine, and comprises an extension arm and a working head fixed to the extension arm; the extension arm comprises a bottom frame fixed to the main machine; a rotating assembly used for driving the working head to rotate and a plane displacement assembly used for driving the working head to operate at a fixed point are mounted on the bottom frame; a sleeve auxiliary replacement box facilitating high-altitude sleeve replacement operation with the working head is further fixed to the main machine; and the sleeve auxiliary replacement box and the bolt retightening device are both fixed to the head end of the main machine. On the premise that safe construction is ensured, the sleeve online replacement function under full high-altitude operation can be achieved, the manual inspection cost is greatly saved finally, the maintenance efficiency is improved, and safe and reliable operation of a power transmission system is ensured.

The invention discloses a centrifuge. The centrifuge comprises a rack, a shell, an upper cover and a rotating drum with a rotating shaft, wherein the rotating drum is arranged in the shell, the shell is installed on the rack and composed of an outer shell body and an inner shell body, a cavity formed by an interlayer is arranged between the outer shell body and the inner shell body, a damping part is arranged in the cavity, one end of the damping part is connected with the outer shell body, the other end of the damping part is connected with the inner shell body, and an observation window is arranged on the upper cover. According to the centrifuge, materials in the centrifuge can be observed in real time, and therefore the centrifugal conditions of the centrifuge can be conveniently controlled, noise and vibration of the centrifuge can be effectively lowered, and safety of the centrifuge is improved.

The invention provides a tunnel adaptive configuration method and device, center end equipment and a communication system. The method comprises the following steps: receiving a next hop parsing protocol (NHRP) message for requesting to establish a tunnel from a local interface; judging whether the local interface is a legal interface for establishing a tunnel or not; when the local interface is a legal interface, determining a first public network address for establishing a tunnel with the target equipment based on the NHRP message; wherein the first public network address is a public network IP address of the central end device, and the target device is a device sending the NHRP message. By means of the mode, the controllability of tunnel establishment can be enhanced, some backup links are effectively removed, the links and the tunnels have the unique corresponding relation, and therefore accurate scheduling of service flow on the links is facilitated.

The invention belongs to the field of military unmanned aerial vehicles, and particularly discloses a military unmanned aerial vehicle mounting system. The military unmanned aerial vehicle mounting system solves the problems that at present, a plurality of devices cannot be mounted at the same time, equipment assembly is complicated, disassembly is not convenient, and mounting equipment has inconvenient position adjustment, and is unable to meet the mounting requirements of a variety of cruise missions. According to a following scheme, the military unmanned aerial vehicle mounting system includes a dial switch module, a mounting control board module, a power module, a mounting component module and an unmanned aerial vehicle flight control module, wherein the dial switch module is connectedto the mounting control board module, the power module is connected to the mounting control board module, and the mounting control board module is connected to the mounting component module. The military unmanned aerial vehicle mounting system has a simple structure and convenient operation, can mount the multiple devices at the same time, and facilitates installation and disassembly of the devices, the mounting equipment is convenient to be subjected to position adjustment, and the mounting requirements of a variety of cruise missions can be met.

The invention discloses a safety function control method and system for an arm-type aerial work platform. The safety function control method comprises the following steps: acquiring monitoring data during the operation process according to the conventional setting; judging the action direction of a corresponding actuator according to the acquired monitoring data, and comparing with the upper limita1, b1 of a corresponding preset normal threshold, the upper limit a2, b2 of a pre-safety threshold, and the upper limit a3, b3 of a safety threshold to obtain a comparison result, wherein a3 <a2 <a1<b1 <b2 <b3; and issuing a command to control the position of a three-position four-way valve of the corresponding actuator or cut off a main valve according to the comparison result. The concept ofa pre-safety mode is introduced. Under the premise that a safety-related control system conforms to PLd, through the mode, the maneuverability of the entire vehicle can be taken into account while redundant monitoring components and valve components are reduced, so that a hydraulic system structure is simplified and costs are reduced.

The invention relates to a verification device for the automobile trunk assembly operation performance. The device comprises a base part and an operation part arranged on the base part and movably connected with the base part. A rotating mechanism capable of adjusting the rotating direction of the base part is arranged on the base part, the operation part comprises an aluminum alloy steel frame mechanism for simulating opening / closing of the contact region of a trunk, a mechanism bearing part for installing the aluminum alloy steel frame mechanism on the base part, and a trunk lock bearing part for installing a trunk lock, the trunk lock is installed on the aluminum alloy steel frame mechanism, a lock catch for achieving pinching with the trunk lock is arranged on the trunk lock bearing part, a balance weight mechanism for adjusting the position of the gravity center is arranged on the aluminum alloy steel frame mechanism, and a handle is arranged at the front end of the aluminum alloysteel frame mechanism. Compared with the prior art, the verification device has the advantages of being convenient to use, applicable to different automobile type sizes and the like.

The invention discloses a drift tire with excellent road holding and controllability and a manufacturing method thereof. A tire tread is on a cross section of a tire meridian line; a profile from an intersection point of a tire equatorial plane and a tire tread profile to a tire tread end of a tire shoulder part is formed by sequentially connecting four sections of arcs and a tire shoulder arc; and the four sections of arcs are sequentially connected and are finally connected with the tire shoulder arc. According to the drift tire with excellent road holding and controllability and the manufacturing method thereof provided by the invention, the saturability of the outer side of a tread pattern is larger than the saturability of the inner side, and a pattern groove adopts a chamfer design;a tire structure is characterized by adding steel wire reinforcement for STEEL on the outer side of a triangle adhesive + adding aramid fiber reinforcement for the outer side of a No.1 tire body on the inner side of the triangle adhesive; high-technology materials such as aramid fiber is added for matching with steel wire cords, so that the hardness of a tire wall is reinforced, meanwhile, the dead weight is reduced, and the supportability of the tire is improved; with the profile design of the four sections of arcs and the tire shoulder arc, the uniform ground contact pressure and a wider netcontact surface can be obtained, and the grounding marks and the ground contact pressure distribution of the tire are favorably optimized; and the tire provided by the invention has excellent road holding and controllability and has high breaking strength.