253results about How to "Reduce acceleration" patented technology

An EV priority switch is configured to allow a user to request a change between an EV priority mode and an HV mode. If an SOC of a power storage device is less than a first threshold value when the change to the HV mode is requested from the EV priority switch during the EV priority mode, an ECU changes the running mode to attain the HV mode and controls the SOC to be close to the SOC at the moment of a request for the change to the HV mode. If the SOC is greater than or equal to the first threshold value, the ECU maintains the EV priority mode. If the SOC reaches a second threshold value less than the first threshold value, the ECU forcefully changes the running mode to attain the HV mode.

The invention discloses a wind tunnel model supporting device which comprises a movable platform, a clamping device, a first driving unit and a second driving unit, wherein the movable platform has three translational freedom degrees and at least one rotation freedom degree. The clamping device is connected with the movable platform and is used for fixing and supporting the model. The first driving unit and the second driving unit are arranged on the movable platform and used for driving the clamping device, and therefore, the clamping device obtains the freedom degrees of rotation in horizontal and transversal directions. The first driving unit comprises a first driving motor and a first rope traction mechanism. The second driving unit comprises a second driving motor and a second rope traction mechanism. The wind tunnel model supporting device with simple and reliable structure can realize six freedom degrees of the model in the wind tunnel test, effectively expand the model pitch and the roll amplitude capable of being realized by model supporting, and decrease the acceleration, the motion speed and the motion travel of the driving units through the first driving unit and second driving unit which are connected in parallel.

The invention discloses a frontal and off-set collision energy absorption device and an automobile with the same. The energy absorption device is arranged at front end of an automobile frame, and comprises two longitudinal beams of energy absorption, one crossbeam of energy absorption, two supporting crossbeams, and two longitudinal beams of auxiliary energy absorption, wherein, a plurality of energy absorption bars and pilot holes are respectively arranged on the two longitudinal beams of energy absorption. The frontal and off-set collision energy absorption device can effectively induce sequential metal plastic deformation of a bearing carrier, which efficiently absorbs more than 80% of collision energy in a high-efficiency frontal collision energy absorption device; and during offset collision, longitudinal beams of unilateral collision energy absorption and longitudinal beams of auxiliary energy absorption efficiently absorb more than 70% of the collision energy, and transfer 20% of the collision energy to a non-collision by crossbeams, thus effectively reducing acceleration of an car body and passengers within a certain living space for the passengers, and reducing personal injury of the passengers caused by the frontal and off-set collision of the automobile.

The invention relates to a particles-impact damper with an elastic support. The inner part of the particles-impact damper is provided with an elastic energy-storage component and a plastic impact energy-dissipation component. The invention is characterized in that the particles-impact damper is connected with a controlled main system through the elastic support and the natural vibration frequency of the particles-impact damper is not greater than that of the controlled main system. The elastic support can be a spiral spring, a plate spring or an elastic cushion; and free movement direction of the elastic support is identical to the vibration direction of the controlled main system. The particles-impact damper can effectively reduce acceleration in impact process and decrease impact on the controlled main system so as to consume vibration energy of the controlled main system to the maximum extent, reduce the energy retransmission to the controlled main system and alleviate the impact of ultraharmonics and subharmonic. The particles-impact damper can be applied to the vibration control of nonlinear systems with low frequency and dense modes.

The invention relates to a variable lens for controlling electromagnetic radiation that interacts with said lens in a controlled manner. The lens includes a container; a first dielectric fluid that is held in the container; a second dielectric fluid that is held in the container, a phase boundary layer between the first and the second fluid. The relative dielectric constant of the first fluid is different from a relative dielectric constant of the second fluid. At least one first electrode; and at least one second electrode is positioned in relation to the first electrode in such a way that an electric current that is applied between the first and the second electrode generates an electric field, which infiltrates the phase boundary layer.

The invention provides a wireless audio and video monitoring system which comprises acquisition sending equipment and far-end display control equipment. The acquisition sending equipment comprises an upper shell, a lower shell and a base; the lower shell is rotationally connected with the base by a bearing and a pressure plate; a functional assembly and a motor are arranged in an inner cavity formed by the upper and lower shells; the functional assembly and the motor are fixed on the lower shell; the motor drives the base to rotate around the bearing by a gear; the functional assembly comprises a main control module, a CCD (Charge Coupled Device) image sensor assembly, a wireless audio and video transmitting module, a wireless data transmission module, a battery and a microphone; and the far-end display control equipment comprises a wireless audio and video receiving module, a wireless data transmission module, an image processing board, a display screen, an input module and a battery. By the matching of the acquisition sending equipment and the far-end display control equipment, the system can be used for carrying out 360-degree rotating scanning and carrying out real-time wireless transmission on a field video image and audio information by receiving a remote wireless command.

An installation structure for the rubber buffer of connector of rolling stock is disclosed, which can stably lead the wrinkle deformation and buffer the impact load and acceleration. The connector, rubber buffer and square tube shaped impact absorbing unit are sequentially installed to front end and back end of a rolling stock. A relational expression between the width and thickness of said impact absorbing unit is also disclosed.

The present invention relates to a distance control system (7) for automatically adjusting a distance (Ds) between a motor vehicle (4) and a motor vehicle (6) traveling ahead of the vehicle (4). The distance control system (7) has at least one sensor (10) for detecting the distance (D) with respect to the vehicle (6) traveling ahead. A route detecting device (18) for detecting a front road (8) is also arranged. The distance control system (7) also has a control device (12) for transmitting an acceleration command to a driver (17) of the motor vehicle (4) to perform acceleration at a preset accelerated speed (A1) when the distance (D) with respect to the preceding vehicle (6) is increased or in free straight driving; and determining an expected lateral accelerated speed (Aq) and adjusts the longitudinal accelerated speed (Al) according to the expected lateral accelerated speed (Aq) when the route detecting device (18) recognizes a front curve. The invention also relates to the corresponding motor vehicle (4) and to a corresponding computer program product.

The invention discloses a self-centering buckling restrained brace end connecting device which comprises an interlayer rubber end plate, an I-shaped connecting plate and friction plates, wherein the I-shaped connecting plate penetrates through the interlayer rubber end plate, and the friction plates are connected to the two sides of a web of the unrestrained end of the I-shaped connecting plate. The interlayer rubber end plate comprises a rubber pad, an end plate, an outer cushion plate and two inner cushion plates, wherein the end plate is arranged on the side, facing the friction plate, of the rubber pad, and the outer cushion plate and the two inner cushion plates are arranged on the other side of the rubber pad. Slots are formed in the web of the unrestrained end of the I-shaped connecting plate in the longitudinal direction, and the I-shaped connecting plate and the friction plate can slide relatively along the slots. According to the connection mode of the self-centering buckling restrained brace end connecting device and a self-centering buckling restrained brace, the restrained end of the I-shaped connecting plate is welded to one end of a core plate and an outer sleeve, the outer cushion plates are in contact with the outer sleeve, the inner cushion plate is in contact with an inner sleeve, and a pre-tensioning rod arranged in the inner sleeve is anchored on the end plate after prestress is applied.

The invention discloses an underwater damper for an arched steel tower in a construction condition. The underwater damper is one of a drilling type, a closed opening type and an opening type, which are symmetrical structures: (1) the drilling type is as follows: drilling in the motion direction of the damper, utilizing water flowing through a pipeline to form turbulence, and increasing resistance with shearing stress of the pipe wall; (2) the closed opening type is as follows: punching on the surface of a cubic box body with a hole inside, un-punching on the top surface and punching on the other five surfaces so as to generate generates turbulence inside the box body by water flow to consume energy; (3) the opening type is as follows: using an un-flat surface including an I type or a Chinese character Wang shape, so as to increase disturbance of the damper to the flow field and increase the damping. The acceleration of a spring oscillator system with the underwater damper is attenuated quickly, so that the underwater damper designed by the invention achieves the effect of increasing the system damping, and the effect is very remarkable.

The invention relates to a collision energy absorption device. The collision energy absorption device comprises a front sub-frame, a front cross beam, and two energy absorption beams, wherein the two energy absorption beams are symmetrically arranged, and are connected between the front sub-frame and the front cross beam; the front sub-frame, the front cross beam and the two energy absorption beams are jointly surrounded to form a collision region; each of the energy absorption beams comprises a first side surface next to the collision region and a second side surface opposite to the first side surface; a plurality of bended first induction regions are arranged on the first side surface of each of the energy absorption beams; a plurality of bended second induction regions are arranged on the second side surface of each of the energy absorption surfaces; and the buckling radius of each first induction region of the first side surfaces is less than that of the corresponding second induction region of the corresponding second side surface in the length direction of each energy absorption beam. According to the collision energy absorption device disclosed by the invention, the collision energy absorption efficiency can be improved, the vehicle body collision acceleration is reduced, and impact on a human body is relieved. The invention further relates to an automobile.

The invention discloses an NMPC-based hub direct-drive air suspension system and a cooperative control method, and the suspension system consists of a sensor module, an expansion observer module, an NMPC controller, a damping coefficient controller, a damping coefficient execution mechanism, an additional air chamber controller and an additional air chamber execution mechanism. The input of the NMPC controller is the vertical displacement and speed of the sprung mass, the vertical displacement and speed of the mass of the tire and the motor rotor, and the vertical displacement and speed of the mass of the motor stator and the residual unsprung mass, and the output of the NMPC controller is the optimal suspension force. The optimal suspension force of the system is solved by taking the optimal performance of the suspension system, reducing the eccentric distance of a motor and prolonging the service life of the motor as control targets, the optimal suspension force is distributed through a damping coefficient and an additional air chamber execution mechanism in sequence, and cooperative control over the damping coefficient of the air suspension and an additional air chamber is achieved. The vehicle body acceleration, the suspension stroke, the tire deformation and the motor eccentric distance are further reduced, and the comprehensive performance of the hub direct-drive air suspension system is improved.

The invention discloses a pressure compensation throttle control system for an oil return path of a working device of an emergency rescue vehicle. The system comprises a pump source, a first valve group, a second valve group, an oil supply channel P, an oil return channel T and a load-sensitive oil path LS, wherein the pump source comprises a negative flow control pump, a primary pressure-differentially-set valve, a primary overflow valve and a primary electrically proportional two-position two-way valve; the first valve group comprises four electrically proportional two-position two-way valves, two pressure compensation valves, two shuttle valves and a hydraulic cylinder; the second valve group comprises four electrically proportional two-position two-way valves, two pressure compensationvalves, two shuttle valves and a hydraulic cylinder. The system disclosed by the invention is simple in structure and energy-saving and reliable, can be used in the field of emergency rescue vehicles, and is in particular suitable for occasions where multiple hydraulic actuators work jointly for a long time such as the working devices of the emergency rescue vehicle, for example, a cargo boom, anexcavating arm and an operational platform arm and the like of the emergency rescue vehicle.

The invention discloses a chair tilting device during the side collision of a passenger car and the passenger car with the device. The chair tilting device installed between a power channel and a B column at a lateral car body comprises a tilting and inverting rod one end of which is fixed on the car floor close to the power channel of the car body and the other end of which is fixedly connected with the B column at the lateral car body and has an angle of inclination with the car floor. The tilting and inverting rod passes through under the chairs in a front row without contact and is fixedly connected with the B column at the lateral car body through an installation plate of the tilting and inverting rod. In an accident of side collision of the car, the collided B column at the side face drives the tilting and inverting rod to rotate around the fulcrum on the vehicle floor under the impact force, and pushes the chairs and passengers to tilt so as to prevent the collided B column at the side face and the car door from striking the passengers directly, thus being beneficial to fully opening side airbags. Meanwhile, the tilting and inverting rod of the invention increases the rigidity of the collided side face and reduces the deflection, thus reducing damage to the passengers by lowering the velocity of deformation due to collision.

A vehicle control device includes an engine, a motor disposed nearer to drive wheel sides than the engine in a vehicle, and a clutch disposed between the engine and the motor and configured to be engaged or released according to an operation input, wherein at the time the clutch is engaged to connect the engine and the drive wheels while the vehicle travels with the engine being stopped, the engine is started by the power transmitted to the engine via the clutch as well as the motor is caused to output assist torque for suppressing a reduction of acceleration of the vehicle caused by that the clutch is engaged, and the assist torque when a braking operation is performed is smaller than the assist torque when the braking operation is not performed.

A control device is applied to a vehicle (1) provided with a transmission (10) having an input shaft (11) connected to an internal combustion engine (2) and an output shaft (12) connected to driving wheels (5), and a second clutch (25) capable of switching an MG (3) between an input shaft connection state in which the MG (3) is connected to the input shaft (11) and an output shaft connection state in which the MG (3) is connected to the output shaft (12), in the case where the transmission (10) is shifted when the second clutch (25) is in the output shaft connection state, drives the driving wheels (5) by the MG (3) such that torque transmitted to the driving wheels (5) does not fluctuate, and in the case where the transmission (10) is shifted when the second clutch (25) is in the input shaft connection state, synchronizes the input shaft (11) and the output shaft (12); during the transmission shifting by the MG (3). When requested driving force for the vehicle (1) is a determination value or less, the second clutch (25) is switched to the output shaft connection state, and when the requested driving force is greater than the determination value, the second clutch (25) is switched to the input shaft connection state.