97results about How to "Speed control" patented technology

A data display device for displaying, on a display unit, a group of images related to a plurality of pieces of file data comprises: an operation unit operable to receive, from a user, a display operation pertaining to the group of images related to the pieces of file data; a storage unit storing cluster information on clusters that are generated by grouping the pieces of file data according to a grouping condition; and a control unit operable to display, on the display unit, the group of images related to the pieces of file data so that the user can distinguish between clusters, in accordance with the display operation received by the operation unit and with the cluster information stored in the storage unit.

A novel method based on sequential writing for fabricating of advanced fiber Bragg gratings is disclosed. As opposed to already presented sequential methods, this scheme uses a continuous wave UV laser source and allows for a very precise control and repetitively of the formation of the gratings. Furthermore, one can use high average irradiances without destroying the fiber, resulting in a dramatical shortening of fabricating times for complex gratings.

An improved pneumatic jetting valve includes a housing with first and second chambers. A pneumatic piston is enclosed between the chambers. First and second solenoid valves are configured to respectively supply air pressure to the chambers and to exhaust the chambers. A controller is operable to regulate the pressurization and venting of the chambers. The controller controls the timing of control signals for the first and second solenoid valves to control the overlap time during which both the first and second chambers are pressurized. By controlling this overlap time, the controller controls the speed of the drive pin of the jetting valve and thereby the speed at which the valve closes to jet a droplet of material. This allows a valve speed to be selected that is most appropriate for the viscosity of the material being jetted. Numerous new methods for utilizing the improved jetting valve and system are disclosed.

The invention discloses a four-wheel hub electric vehicle speed control method comprising the following steps: using a present drive mode to select a proper speed estimation module, i.e., a UKF based speed estimation module or a wheel speed based speed estimation module, and real time estimating the present speed; carrying out smooth filtering process for speed jumping when the drive mode switches; taking expected speed as the control target, and using a PID controller to control the output total torque; inputting the total torque into each motor controller through torque distribution and limitation, thus controlling the electric vehicle to reach the expected speed.

The invention relates to a method for controlling the speed of an electric car. The method comprises the following steps: (1) inputting an actual speed signal detected by a Hall type wheel speed signal sensor into a completed car controller, and judging whether to start the speed closed-loop control or not through a control chip; (2) selecting a driving mode on a driving mode selecting module by a driver according to a present road condition, and at the same time, stepping an electronic type accelerator pedal to one position for the driver; (3) inputting a driving mode signal, an accelerator pedal position signal and the actual speed signal into the completed car controller through corresponding channels; (4) filtering the input accelerator pedal position signal by using a low pass filter; (5) calculating the processed accelerator pedal position signal and the processed actual speed signal through a PID controller to obtain a drive motor torque command, and inputting the drive motor torque command to a drive motor controller through a CAN communication channel; and (6) controlling a drive motor to act by the drive motor controller according to the drive motor command. The method disclosed by the invention can be widely applied to the speed control of various electric cars.

The invention discloses a lorry automatic gearbox crawling control system based on clutch target torque, which comprises the clutch synchronic examination sub-module, a vehicle sliding examination sub-module, and a clutch overheating examination sub-module. TCU utilizes the crawling control to vehicle according to the output signals of each sub-module. The crawling control to vehicle of TUC comprises the crawling control mode in waiting state, in the mixed accelerator state, in the mandatory junction state and in synch state. The switches of various control modes are up to the current vehicle state. Target speed (TS) of engine and clutch target position (ICP) in different vehicle state can be gained by the crawling control to vehicle of TCU. The method can meet the crawling control demands in various vehicle working conditions, protect clutch as much as possible and give drivers the maximum controllability of vehicle crawling.

A fan module testing system is used for testing whether a plurality of fans mounted in a server can meet the requirement of heat radiation or not, and comprises a temperature sensing module and a CPLD (complex programmable logic device). The temperature sensing module is used for sensing internal temperature of the server. The CPLD comprises a PWM (pulse-width modulation) module connected with the fans, and the PWM module outputs PWM signals different in duty ratio to control rotation speed of the fans, and the CPLD is connected with the temperature sensing module so as to read the temperature information in the server. The fan module testing system controls rotation speed of the fans by means of the PWM signals, and accuracy of testing results can be improved.

The invention provides an automatic juvenile mussel wrapping machine and belongs to the technical field of fishery tools and solves the technical problems of high labor intensity, low efficiency and the like of existing juvenile mussel wrapping. The juvenile mussel wrapping machine comprises a rack, wherein a platform is arranged on the rack, a juvenile mussel wrapping groove in the length direction of the platform is formed in the platform, a juvenile mussel wrapping cloth wheel and a juvenile mussel aquaculture rope reel are arranged at two ends of the rack separately, juvenile mussel wrapping cloth on the juvenile mussel wrapping cloth wheel extends to the juvenile mussel aquaculture rope reel along the juvenile mussel wrapping groove, and a juvenile mussel scattering device, a clampingmechanism and a stitching mechanism are sequentially arranged on the rack from the juvenile mussel wrapping cloth wheel to the juvenile mussel aquaculture rope reel; the clamping mechanism comprisestwo parallel clamping rods arranged in the length direction of the juvenile mussel wrapping groove and also comprises a driving assembly driving the two clamping rods to get close to or get away fromeach other, and the stitching mechanism can stitch two sides of the juvenile mussel wrapping cloth clamped by the clamping rods on two sides. The juvenile mussel wrapping machine is high in automationdegree and work efficiency.

A PWM buffer circuit includes a duty cycle converting circuit and a frequency-fixed PWM signal generating circuit. The duty cycle converting circuit is used for receiving a first PWM signal and then generating a duty cycle reference voltage on the basis of the first PWM signal. The duty cycle reference voltage is a one-to-one mapping function of the first duty cycle. The frequency-fixed PWM signal generating circuit is used for receiving the duty cycle reference voltage and then outputting a second PWM signal with a fixed frequency. The second PWM signal has a second duty cycle, which is determined in accordance with the duty cycle reference voltage. In addition, the second duty cycle is a one-to-one mapping function of the duty cycle reference voltage.

The invention provides a pH and temperature double-sensitive intelligent nanogel and a preparation method thereof. The method comprises the following steps: adding ltaconic acid into sodium hydroxide solution to obtain partially neutralized ltaconic acid water solution; adding acrylamide, N-isopropyl acrylamide and a crosslinking agent into the partially neutralized ltaconic acid water solution, and stirring to obtain a transparent single mixture solution; adding the transparent single mixture solution into a mixed solvent containing oil-soluble solvent and Span80 / Tween 80 composite surfactant, stirring, heating to 40-60DEG C, and adding an oxidant and a reducing agent, to obtain intelligent transparent or semitransparent nanogel reversed-phase microemulsion; demulsifying and precipitating the intelligent transparent or semitransparent nanogel reversed-phase microemulsion with ethanol, washing, drying and grinding to the pH and temperature double-sensitive intelligent nanogel. The invention further provides the pH and temperature double-sensitive intelligent nanogel prepared by adopting the preparation method. The pH and temperature double-sensitive intelligent nanogel has good pH and temperature double sensitivity.

The invention relates to the technology of track traffic, in particular to a train velocity measuring system and velocity measuring method through track proximity switches. The velocity measuring system comprises two sets of proximity switches, a single chip microcomputer and an upper computer, wherein the proximity switches are used for detecting the marching direction and marching speed of a train, the single chip microcomputer is connected with the proximity switches and transmits character string information to the upper computer after receiving level signals transmitted by the proximity switches, and the upper computer is connected with the single chip microcomputer, verifies the received information and then obtains the speed information and the direction information of the train through analysis. When the train passes through, the proximity switches arranged on a track in the train coming direction can generate TTL levels, the single chip micro computer receives the level signals and judges the direction and speed of the train based on algorithm induction time difference, and the upper computer verified the received information and then obtains the speed information and the direction information of the train through analysis. The train velocity measuring system and velocity measuring method through the track proximity switches effectively avoids the defects, and has the advantages of being precision in velocity measuring range, accurate in measurement, small in influence by environment, capable of effectively ensuring the fact that the speed of the train is controlled within the range of 0.1KM / H and the like.

In a control apparatus of a vehicular drive system, a charging / discharging-restricted shift control apparatus makes a determination to perform a shift in a shifting portion such that less power is charged to a power storage device or discharged from a power storage device when charging or discharging of the power storage device is restricted than when charging or discharging of the power storage device is not restricted.

The invention provides a method, a device and a system for controlling the reversing speed of a vehicle and a reversing safety controller, wherein the method for controlling the reversing speed of a vehicle comprises the following steps of: monitoring the speed of the vehicle when the vehicle reversely moves; when the distance between the tail of the vehicle and an obstacle is smaller than the preset distance, if the speed of the vehicle is higher than or equal to the preset first speed limit of the vehicle, reducing the speed of the vehicle according to a predetermined ratio. Through the adoption of the method, the device and the system for controlling the reversing speed of a vehicle and the reversing safety controller, controlling and limiting of the reversing speed of the vehicle can be achieved.

The invention discloses a crusher with good crushing effect. The crusher comprises a machine body, wherein the machine body comprises a motor room, a crushing room and a supporting frame which is arranged on the bottoms of the motor room and the crushing room; a motor is arranged in the motor room; the top end of the crushing room is provided with a feeding funnel; a crushing tool is arranged in the crushing room; the crushing tool comprises a rotary shaft and wheel spokes; through holes are formed in the wheel spokes; the wheel spokes are fixedly connected through a blade string rod; the wheel spokes are fixedly connected through a supporting beam; the blade string rod is in nested connection with blades; the blades are provided with convex points which are uniformly distributed; the right side of the bottom of the crushing room is further provided with a discharge hole; the bottom of the supporting frame is provided with a bottom plate; an inverted hydraulic lifting jack is arranged on the bottom plate; the output shaft of the hydraulic lifting jack is connected with a base; the bottom of the base is further provided with an anti-skidding pad; and the bottom of the bottom plate is further provided with roller wheels. The crusher is simple in structure, relatively complete in processing, convenient for replacing a damaged blade, environmentally-friendly, economical, convenient for moving a machine body, very convenient, and easy to popularize.

The invention relates to a star-shaped polyglutamic acid as well as injectable hydrogel and a preparation method thereof. According to the preparation method, firstly, polyamino beta-cyclodextrin is stereospecifically synthesized, secondly, a plurality of polymerization reaction initiation sites are introduced so as to initiate ring-opening polymerization of L-glutamate-N-carboxylic acid anhydride, and finally the L-glutamate-N-carboxylic acid anhydride subjected to ring-opening polymerization is modified to be used as a first component of hydrogel; meanwhile, modified polysaccharide polymer is used as a second component of the hydrogel, the two components are mixed according to a certain ratio, through chemical crosslinking of the Schiff base reaction, the star-polyglutamic acid hydrogel is obtained, and the gelation time is 7-300 s. The hydrogel is characterized by having an excellent apparent appearance, mechanical properties, biocompatibility and biodegradability; in addition, beta-cyclodextrin is used as a core of the star-shaped polyglutamic acid, so that additional stable crosslinking sites are provided, the improvement of the mechanical strength of the hydrogel is facilitated, and the loading and controlled release properties to hydrophobic drugs are improved. The hydrogel has a wide application prospect in the fields of drug controlled release, tissue engineering, regenerative medicine and the like.

The invention relates to a safety information prompt system for limiting dangerous driving. The safety information prompt system comprises a control processor and an image capture device, wherein theimage capture device comprises a vehicle interior capture device and a vehicle exterior capture device, and the image capture device is connected with the control processor; the vehicle interior capture device is used for capturing a vehicle interior image, and the control processor acquires the vehicle interior image and judges whether abnormal operation of a user exists or not; the vehicle exterior capture device is used for capturing a vehicle exterior image, and the control processor acquires the vehicle exterior image and judges whether abnormal driving exists or not; the control processor is also connected with a vehicle control module, and the vehicle control module comprises a start control module and a vehicle speed control module; when the control processor judges that the abnormal operation of the user exists, the control processor outputs a start locking signal to the start control module; and when the control processor judges that the abnormal driving of the user exists, the control processor outputs a vehicle speed limiting signal to the vehicle speed control module.

The invention belongs to the field of automobile electronic control, and particularly relates to an engine power output control method. The method comprises the following steps: determining selectablegears of a target vehicle according to an altitude coefficient of the position where the target vehicle is located and an air inlet temperature of the target vehicle, wherein the selectable gears comprise at least one of all advancing gears in the target vehicle; obtaining the torque loss of an air conditioning system, and determining a driver required torque of the target vehicle according to the gear selected by the driver; and cutting off the air conditioning system of the target vehicle when the sum of the driver required torque and the torque loss of the air conditioning system is greater than a torque threshold and an engine rotating speed is greater than a rotating speed threshold. By using the method, the power output of the engine to the air conditioning system can be controlledin real time, so that the driving comfort of the automobile is improved.

The invention discloses a micro water pump capable of accurately controlling flow. The micro water pump comprises an upper cover, a valve seat, a water bag seat, a base casing, water bags, a bent lever, a drive shaft, an eccentric wheel, a motor, an optoelectronic switch and an output circuit board, wherein a water outlet and a water inlet are formed in the upper cover; water inlet holes and water outlet holes are formed in the valve seat; the water bags for sucking water into the water inlet holes or pushing water out of the water outlet holes are mounted on the water bag seat; the water bags are driven by the bent lever, the drive shaft and the eccentric wheel to work; the motor and the optoelectronic switch are mounted on the base casing; photoelectric shading pieces are mounted on the eccentric wheel or a motor shaft; the optoelectronic switch is electrically connected with the output circuit board; the output circuit board is used for being electrically connected with an external motor controller. Based on output revolution information, a user can accurately control the revolution of the motor through combination of the revolution information and the external motor controller, so that different quantities of stable water flow under different back pressure is obtained, and the micro water pump has the characteristics that the flow control is accurate, the work is stable and smooth and the service life is long.

The invention discloses a dynamic speed limit control method and system based on an intelligent network connection vehicle, a terminal and a readable storage medium, and the method comprises the steps: through the close connection between an intelligent vehicle-mounted information terminal and an information network, in a scene that a traffic bottleneck exists at the downstream of a road section, intelligent network connection vehicles are used for leading manual driving vehicles to form a motorcade for dynamic speed limit control, so that the safety of highway speed limit control is improved, the cost of speed limit control is reduced, the road traffic accident rate is reduced, and the highway traffic safety and efficiency are improved. Deceleration parameters of a head vehicle in a motorcade are controlled based on a dynamic speed limit control model, and a neural network model is further constructed by using the dynamic speed limit control model and is applied to a vehicle speed control process. The method can overcome the defects of the existing expressway dynamic speed limit control, effectively improves the traffic safety of the expressway, and is suitable for expressway traffic safety management and control under the condition that future network connection vehicles and non-network connection vehicles are mixed.

The invention discloses a multi-source-information-fusion-based marked line paving method for an especially large highway bridge. The method comprises the following steps: arranging a visual illusion marked line with an optical flow rate of 6-12HZ on a rail; alternately arranging red distance confirming lines and yellow distance confirming lines on a side wall; arranging a white broken line distance confirming marked line on the bridge floor; transversely arranging a vibrating and reducing marked line on the bridge floor above a pier; vertically arranging a road-side vibrating belt on the bridge and close to the rail; and coating the surfaces of the red distance confirming lines, the yellow distance confirming lines, the white broken line distance confirming marked line, the vibrating and reducing marked line and the road-side vibrating belt with a retro-reflecting material. The marked line provided by the invention has the effects of controlling vehicle speed and keeping distance and further has a certain anti-corrosion function for the bridge.

The invention relates to an AGV remote monitoring system based on silkworm breeding equipment, and relates to the technical field of remote supervision and control, and the system obtains the state information of a plurality of AGVs in a silkworm breeding production area, a planned transportation task route, an issued instruction, and the operation parameters of the AGVs in the task execution through an operation control module when a silkworm breeding task is executed; the control intervention module determines whether emergency speed reduction occurs in the transportation task execution process of the AGV according to the operation speed reduction amount delta V in the obtained AGV operation parameters when the AGV executes the transportation task, and determines whether the current path planning is reasonable according to the occurrence rate of the AGV with the emergency speed reduction condition. If it is judged that the operation parameters are unreasonable, the behavior of the AGV is intervened, alarm information fed back by the AGV is sent to a remote monitoring center through an alarm module, the task execution process of the far-end AGV is controlled more accurately, and the working efficiency of a silkworm room is improved.

The invention relates to a pine needle laying device special for radix notoginseng, belonging to the technical field of agricultural product processing machinery and equipment. The pine needle layingdevice includes a running mechanism, a pushing mechanism and a laying mechanism. The running mechanism includes a motor, an output shaft, a pulley II, a belt II, a pulley IV, a fixed shaft, a rear wheel, a supporting frame II, a supporting plate, a bearing block I, a front wheel, a supporting frame III, a handle and a bearing block II. The pushing mechanism includes a storage box, a supporting rod, a sliding groove, a connecting rod I, a connecting rod II, a supporting frame I and a push rod. The laying mechanism includes a pulley I, a belt I, a pulley III , a rotating shaft I, a chain wheel I, a chain, a fixed rod, a rotating shaft II, a rotating shaft I, a chain wheel II and a bearing support. According to the pine needle laying device, pine needles in the storage box are pushed to the laying mechanism through the pushing mechanism; the laying mechanism can lay the pine needles on the ground of a radix notoginseng planting area under the driving of the motor, and the pine needle laying device is further provided with the running mechanism driven by the motor, which can greatly reduce labor.

The invention discloses an automobile brake generator. The automobile brake generator comprises a rotor (2) and a stator. The rotor (2) is mounted on an automobile axle (1). The stator is composed of two semicircular stators (3), wherein one semicircular stator (3) is mounted on one side of the rotor (2) through a telescoping mechanism (5), the telescoping mechanism (5) is connected with a brake mechanism of an automobile, and the other semicircular stator (3) is fixed on the other side of the rotor (2). According to the automobile brake generator, rotation of the axle is used for generating electricity, mechanical energy needing to be wasted originally of the automobile is converted into electric energy to be used, and meanwhile corresponding reactive force is generated so that the speed of the automobile can be controlled.

Disclosed is a method for discovering neighbor nodes in a vehicle self-organizing network. A vehicle in the network sends a beacon as follows: time is divided into time frames one by one, and each time frame is provided with a plurality of time slots; the number of the time slots in each time frame is set by the vehicle according to the traffic stream density in a road segment, and whenever a novel road segment is driven in, the vehicle resets the number of the time slots in each time frame according to the traffic stream density in the novel road segment; the beacon sending frequency is randomly set by the vehicle in a first time frame; when a novel time frame starts, and the vehicle selects another vehicle to be used as a reference vehicle according to received information in a previous time frame and calculates the sending frequency of the time frame according to the number of neighbors of the reference vehicle and the number of the time slots of the time frame; corresponding time slots are randomly selected according to the calculated sending frequency, the beacon is sent in a selected time slot, and the rest time slots are not used for sending the beacon. By means of the method for discovering the neighbor nodes in the vehicle self-organizing network, neighbor delay discovering can be reduced, fair neighbor node discovering can be guaranteed as well, and therefore the method is suitable for any vehicle self-organizing network.

The invention provides a monitoring method, device and system for an electric bicycle, and a host computer, wherein the monitoring system comprises the monitoring device for the electric bicycle and the host computer. The monitoring device for the electric bicycle comprises a driving module, a controlling module, a first communication module, a first sending module and a first receiving module. The host computer comprises a second communication module, a second receiving module, a WeChat mini application controlling module and a second sending module. The monitoring method comprises steps of establishing communication connection, sending information data, receiving a control command, processing the control command and performing controlling. The monitoring and controlling of the electric bicycle can be achieved without requiring downloading and installation, so that the electric bicycle is enabled to user-friendly and intelligent.

The invention discloses a cutter convenient to detach. The cutter comprises a cutter body. The cutter body comprises a cutter head, a cutter body and a cutter base. A through hole is formed in the center position of the cutter base. The cutter body is arranged in the through hole. A detachable buffering base is arranged at the end portion of the through hole. Limiting blocks are arranged at the two ends of the buffering base. The cutter base is provided with grooves matched with the limiting blocks. The cutter head is connected to the bottom end of the cutter body. A spring is arranged in the through hole. A baffle ring is arranged on the inner edge of the through hole, a check ring is arranged at the top end of the cutter body, and the check ring is located on the inner side of the stop ring. The cutter has the beneficial effects that the structure is simple, using is convenient, the spring is additionally arranged, the cutter can rotate at a high speed, the drilling resistance is small, and the strength is high; meanwhile, stability is guaranteed as well, machining of some natural stone and high-hardness brittle materials is easier, and the speed of the cutter head can be controlled; and meanwhile, the spring can be dismounted and installed according to requirements, the application range is wide, and requirements of different customers are met.

The invention discloses a temperature control system with a controllable condensation distance for tire tread and sidewall production. The temperature control system comprises a support and a conveying mechanism which is arranged on the support and used for transporting tires, wherein a plurality of temperature sensors used for detecting the temperature of the tires are arranged on the support inthe conveying direction of the conveying mechanism, each temperature sensor is at least provided with two sets of cooling assemblies used for cooling the tires, each set of cooling assembly comprisestwo air cooling units which are symmetrical about a tire conveying face, the air spraying ends of every two corresponding air cooling units face the upper side face and the lower side face of the conveying mechanism respectively, each air cooling unit comprises an installation base, and an air blower is arranged on each installation base. Experiments prove that a cooling device is wide in coolingcoverage area, high in cooling efficiency, high in precision, capable of saving cooling liquid and high in energy-saving efficiency, and meanwhile the manufacturing process and cost of a whole experimental device are effectively controlled.

The invention discloses a sputum expulsion device for severe patients in neurosurgery, which relates to the technical field of medical devices. The device comprises an endotracheal intubation mechanism, a vibration mechanism and a sputum suction mechanism. The tracheal intubation mechanism comprises an oxygen supply tube; The head and the middle of the oxygen supply pipe are fixedly sleeved with apositioning air bag. The vibration mechanism comprises a vibration detection system, a positioning plate and two vibration bladders; A magnetic needle is fixedly installed inside that vibration capsule. A drive motor is slidably installed in the chute; The output end of the driving motor is fixedly connected with a permanent magnet. The permanent magnet is arranged in parallel with the magnetic needle. The sputum suction mechanism comprises a tool table, a negative pressure pump, a sputum suction box and a sputum suction tube. The invention has the beneficial effects that the vibration sourcepenetrates into the airway in combination with the oxygen supply tube for the patient who needs the tracheal intubation to supply air, the influence of the gas vibration on the lung and the trachea is more effectively realized, and the rehabilitation exercise is facilitated.

The invention discloses a control method and device for a balance car, and belongs to the technical field of balance cars. The method comprises the steps that a first state of parameters input by a user through balance car pedals is acquired; when the first state indicates that the parameters change, the balance car is controlled to run according to the changes. According to the control method and device for the balance car, the user can conveniently control the speed of the balance car through the two feet, and the driving safety is improved.

The invention discloses a method for fast boosting and reducing pressure of a respirator. The method includes the steps of establishing a correspondence table; assuming that a pressure boosting and reducing process of the respirator is a process of accelerated boosting, transitioning at constant speed and then decelerated reducing, and by combining with a given pressure boosting speed of the respirator, obtaining the output pressure of the respirator at any time; obtaining the actual output pressure and flow of the respirator at the current time, and checking the corresponding relationship table to obtain a corresponding rotating speed of a fan and to obtain the output pressure of the respirator after n time from the current time at the same time; checking again the corresponding relationship table to obtain the corresponding rotating speed of the fan, and combining with a conversion relationship between the rotating speed of the fan and current of the fan to obtain the exact current magnitude of the fan to control the fan to increase or decrease the speed according to the current magnitude of the fan; detecting whether or not the difference between the actual output pressure of the respirator and target output pressure is within an error range, and conducting the steps above in cycle till the pressure boosting process or the pressure reducing process ends. According to the method, the adjustment speed of boosting and reducing the output pressure of the respirator is greatly increased, and problems such as over-adjustment cannot occur.