44results about How to "Automatic speed control" patented technology

The invention proposes a controlling method for an electric car. The method comprises the following steps: detecting whether the position of a shift lever of the car is changed or not; if the position of the shift lever is changed, judging the state of the car according to the present position and the prior position of the shift lever, and detecting the present speed of the car; if the car is in the first state, comparing the present speed with the first predetermined speed; if the speed is smaller than or equal to the first predetermined speed, adjusting the present speed to the first predetermined speed, otherwise, calculating a target gear of an automatic gearbox according to the present speed; judging whether the target gear is the same as the present gear or not; if the target gear is different from the present gear, matching the automatic gearbox to the target gear, otherwise, adjusting the present speed directly according to a control signal of a driver. The controlling method of the invention can be used for automatically controlling the speed of the electric car when the gear is shifted, the car is prevented from sliding forth and back, sufficient reacting time for a driver to correct false operation behaviors is given, and the driving safety of the car is improved.

The invention provides a vehicle control method and device. The vehicle control method and device are applied to a pure electric vehicle. The pure electric vehicle comprises a vehicle control module,an accelerator pedal and a brake pedal. The vehicle control method comprises the steps of judging whether a single pedal control function is turned on through the vehicle control module, outputting afirst torque according to a first preset table and sending an energy recovery request to the vehicle control module if the single pedal control function is turned on, enabling the first preset table to be a contrast relation table of a current vehicle speed, an accelerator pedal opening degree and accelerator pedal output torque positive and negative values acquired when the accelerator pedal independently controls the acceleration and braking of the vehicle, performing energy recovery of the first torque through the vehicle control module, and outputting a second torque after the energy recovery. The vehicle control method and device solve the problem that the prior art realizes the speed control of the vehicle through the cooperation of the accelerator pedal and the brake pedal resultingin energy waste when applied to the pure electric vehicle.

The invention discloses an online synchronous film leftover recycling device which comprises a base, a winding mechanism, a transmission mechanism and at least one spring. The winding mechanism and the transmission mechanism are arranged on the base. The winding mechanism comprises a winding shaft. The transmission mechanism comprises a driving bearing wheel, a driven bearing wheel and a bearing wheel connecting rod. The driving bearing wheel and the driven bearing wheel are respectively mounted at two ends of the bearing wheel connecting rod and are in transmission connection through a transmission chain or cog belt. The driving bearing wheel is closely abutted to a driving roller, the driven bearing wheel is closely abutted to the winding shaft, the joints of the first ends of the springs are kept constant relative to the base, and the second ends of the springs are connected to the winding mechanism or the transmission mechanism. By the aid of the power of the driving roller of a winding device on a production line, film leftover recycling synchronous with the production line is realized, rotation speed of the winding shaft can be automatically controlled and is ensured to be synchronous with production speed of a film making machine.

The invention provides a car carpet production line comprising a vertically arranged cotton delivering box, a pair of cotton delivering rollers rotationally arranged at the bottom of the cotton conveying box, a first conveying curtain arranged bellow the cotton delivering rollers, a second conveying curtain parallel with the first conveying curtain, a weighing device arranged between the first conveying curtain and the second conveying curtain and used for weighing cotton fibers, a cotton carding box for carding the cotton fibers and a pair of cotton feeding rollers for feeding the cotton fibers on the second conveying curtain into a cotton inlet of the cotton carding box, wherein the cotton feeding rollers are driven by a variable frequency motor to rotate, a control host is used for controlling the variable frequency motor and connected with a controller of the weighing device and a controller of the variable frequency motor respectively, and an anti-blocking device for preventing cotton blockage is arranged in the cotton delivering box. The speed of the rollers is controlled automatically according to the weight of fiber layers, so that the weight of fibers fed into a carding machine is stable, and the gram weight of final products is stable.

The invention discloses an auxiliary detecting method for safe driving of an automobile, and belongs to the field of automatic control. The running speed of the automobile is detected; the distance between a barrier in front of the automobile and the automobile and an object in the air in front of the automobile are detected; whether or not the distance between the barrier and the automobile meetsthe automobile speed limit distance is judged, and whether or not there is the object in the air is judged; when the distance between the barrier and the automobile does not meet the automobile speedlimit distance, the braking automobile speed is controlled, and when there is the object in the air, first distance of the object in the air is detected; second distance of the object in the air is detected, and whether or not the object in the air is a flying object is judged; the automobile is braked, an object blocking plate is pulled downward, and front-row persons in the automobile are protected. Detection for a flying object in the air is set, therefore when the flying object flies towards the automobile, the speed of the automobile can be automatically controlled, and it is avoided that due to the fact that a driver is influenced by the flying object, the car accident happens; when it is detected that the flying object flies towards the automobile, a protection plate is pulled downward for protecting the front-raw persons, injury is reduced better, and objects in front of the automobile are detected in real time to avoid the rear-end accident happening to the automobile.

The invention relates to a multi-specification motor shaft feeding device. The multi-specification motor shaft feeding device is characterized by comprising a support, a feeding support and a pushingair cylinder, the feeding support and the pushing air cylinder are fixedly installed on the support, the feeding support comprises an L-shaped supporting plate, an inclined support plate, a storing plate and an L-shaped stopping plate, the inclined support plate is fixedly installed on the L-shaped supporting plate, a plurality of snap joints are arranged on the side wall of the inclined support plate, a plurality of clamping holes are formed in the upper surface of the storing plate, the storing plate is detachably clamped to the inclined support plate, the L-shaped stopping plate is fixed tothe L-shaped supporting plate, the L-shaped stopping plate is matched with the storing plate to form a material bayonet, and the pushing air cylinder corresponds to the material bayonet. The multi-specification motor shaft feeding device is scientific and reasonable in structural design, stable and continuous feeding of motor shaft materials can be guaranteed, the motor shaft quality can be guaranteed, motor shaft deformation is effectively prevented, the multi-specification motor shaft feeding device can be suitable for feeding motor shaft cutting machines in different machining sizes, the application scope is wide, manpower is saved, and the feeding efficiency is improved.

The present invention relates to preventing, warning and intelligent controlling technology of automobile end collision and is used in preventing automobile end collision accident. The intelligent control system adopts integral detecting, analysis, processing and control structure mode, and includes signal acquisition part comprising Doppler ranging radar, vehicle speed and braking sensor; central system processor part; display and alarm part; and control and executing part comprising engine fuel supplying and braking unit. The central system processor unit has integrated signal modulation, input buffering, sampling and holding and many other functions, and is provided with conversion switch for changing between the 'overtaking mode' and 'city area running mode'. The present invention may be installed in various kinds of automobile without altering influencing the outer appearance and electric lines of the automobile.

The invention discloses a flexible rule which comprises a rule shell, a reel and a rule tape and also comprises a speed regulator. The speed regulator comprises a rotating wheel rotatably connected with the reel and a damping part providing rotating resistance for the rotating wheel, wherein the damping part is installed on the rule shell, a ratchet wheel and pawl mechanism for making the reel tounidirectionally drive the rotating wheel to rotate is arranged between the rotating wheel and the reel, and the reel drives the rotating wheel to rotate when the rule tape is withdrawn. When the ruletape is pulled out, the rule tape drives the reel to rotate, a ratchet wheel and pawl assembly is in an unengaged state at the moment, the rotating wheel is not driven to rotate under the interference of the damping part, and the rule tape can be normally used at the moment and is very easily pulled out. When the rule tape is withdrawn, the elastic force of a coil spring drives the reel to rotatereversely and drive the rule tape to be withdrawn, the reel drives the rotating wheel to rotate under the effect of the ratchet wheel and pawl mechanism at the moment, the rotation speed of the rotating wheel and the reel is reduced by the rotating wheel under the damping of the damping part, and accordingly the withdrawing speed of the rule tape is reduced.

The method of realizing stepless speed varying method of the present invention is realized through controlling the speed difference of two gears in planetary gear train. The stepless gear speed variator consists of mainly main driving part, differential speed part, speed control part and balance part. The main driving part is one planetary gear train. The present invention his the advantages of simple structure, great driving power, small size, high efficiency, wide speed varying range and wide application range.

The invention discloses an electric roller intelligent controller, and belongs to the technical field of intelligent controllers. The electric roller intelligent controller comprises an electric roller and a controller, wherein the controller comprises a main control chip, a signal detection module, a signal amplifier, a signal converter and a display; the signal detection module is used for acquiring an external input signal and identifying a control signal; the signal detection module is connected with the main control chip; and the main control chip analyzes, calculates and processes the input signal and outputs the control signal. According to the electric roller intelligent controller, remote information transmission among the controller, the electric roller and an industrial controlcomputer can be realized; the main control chip is used for processing the collected relevant information of the electric roller and sending out the corresponding control signal according to a conclusion obtained by processing; and the industrial control computer or the touch screen display is used as an input end to collect manual instructions, a processor determines the priority of the manual instructions, and then an electric roller control system with manual control as the core and automatic control as the auxiliary is realizesd.

The invention relates to the technical field of lime powder disinfection of silkworm nests, in particular to intelligent silkworm breeding equipment. The equipment comprises a machine frame, an electromagnetic vibration discharging machine, a discharging channel, an intelligent detection system, a mounting frame, silkworm nests and a displacement driving system, the electromagnetic vibration discharging machine is arranged beside the machine frame, the intelligent detection system is arranged in the discharging channel, and the mounting frame can be arranged on the machine frame in a sliding mode in the direction parallel to the conveying direction of the machine frame. The intelligent detection system comprises a controller and a pressure sensing mechanism, the displacement driving system comprises a horizontal displacement device, a vertical displacement device and a rotary driving device, and the controller is electrically connected with the pressure sensing mechanism, the horizontal displacement device, the vertical displacement device and the rotary driving device. The intelligent detection system in the equipment automatically controls the overall discharging speed and the lime powder discharging uniformity degree, the lime powder scattering amount in each silkworm nest is kept within a certain range, the intelligent degree of the equipment is improved, and the sterilization effect on the silkworm nests is improved.

The invention provides a speed control system and a shunting system for shunting equipment. The speed control system comprises a position detection device, a control device and a frequency conversion device which are connected with one another, wherein the position detection device is used for detecting a current position of the shunting equipment and transmitting the current position to the control device; the control device is used for receiving the current position of the shunting equipment and outputting a speed control signal corresponding to the current position according to a position-speed corresponding curve for the shunting equipment to the frequency conversion device, wherein the position-speed corresponding curve is obtained by fitting according to the initial speed, the initial position and a preset stepping parameter of the shunting equipment; and the frequency conversion device is used for receiving the speed control signal and controlling the rotation speed of a motor of the shunting equipment according to the received speed control signal so as to control the speed of the shunting equipment. The speed control system and the shunting system provided by the invention can automatically control the advancing of the shunting equipment and has higher safety.

The invention discloses an automatic speed control method and device for a high-speed railway train. The method and device are applied to an automatic driving system of the high-speed railway train, and specifically comprise the steps: obtaining various types of operation information of the high-speed railway train in real time when the train is in an automatic driving state; calculating in combination with a train traction / braking performance period to obtain a target speed, a target point and a target acceleration; processing the target speed, the target point and the target acceleration toobtain a target control parameter; and outputting the target control parameter to an automatic driving system, so that the automatic driving system controls the high-speed railway train according to the target control parameter. According to the scheme, the speed of the high-speed railway train can be automatically controlled, so that the safe, punctual and stable operation of the high-speed railway train is ensured.

The invention relates to a control device of wire arranging flatness for a take-up machine. The flatness control device comprises a take-up reel driven by a winding motor, a transverse wire arranging mechanism for controlling transverse winding, and a wire storage adjustment mechanism arranged at the tail end of the device, wherein the winding motor carries out rotary control by the winding motor driver, and a take-up reel tachogenerator for speed measurement is also arranged on the winding motor; in the transverse wire arranging mechanism, the transverse wire arranging motor driver drives the transverse wire arranging motor to rotate a screw, so that a wire arranging wheel on the screw flexibly moves on the screw; and the wire storage adjustment mechanism comprises a wire storage pulley which can move back and forth in a slide groove, and a wire speed tachogenerator for measuring the linear speed of a wire product. Through the method, according to the control device of wire arranging flatness for the take-up machine, the rotary speed of the take-up reel and the linear speed of the wire product are reverted into electrical signals, and the rotary speed of the transverse wire arranging mechanism is automatically controlled by the treatment of a transverse control circuit board so as to achieve the purpose that the wire arranging flatness is automatically controlled.

The invention discloses a variable-frequency ultrahigh-pressure micro mist humidifier, which comprises a humidifier host machine and a microcomputer humidity partition controller, wherein the humidifier host machine is provided with a water tank, a microcomputer numerical control panel, a high-pressure pump and a variable-frequency motor; a water level control device which is electrically connected with the microcomputer numerical control panel is arranged in the water tank; the microcomputer numerical control panel is electrically connected with a frequency converter which is electrically connected with the variable-frequency motor; the frequency converter is electrically connected with the microcomputer humidity partition controller which is electrically connected with a high-pressure electromagnetic valve and a temperature and humidity sensor; the high-pressure electromagnetic valve is used for controlling a high-pressure micro mist nozzle which is connected with the high-pressure pump through a pipeline; and the variable-frequency motor is in transmission connection with the high-pressure pump. Compared with the conventional humidifier, the micro mist humidifier has the advantages of prolonging the service life of the humidifier and the high-pressure pump by one time, reducing noise by 10 to 15 db, saving more than 50 percent of energy and humidifying a plurality of sections and achieving an optimal effect by using one humidifier.