30results about How to "Improve time lag" patented technology

A seat belt buckle fastening detector 40, which detects the existence of seat belt fastening, includes a printed circuit board 41 including a normally-closed contact NC, a normally-opened contact NO, and a common contact COM. A slider 42 electrically connects the normally-closed contact NC and the common contact COM, or the normally-opened contact NO and the common contact COM. The common contact COM is formed on one surface 41 a of the print circuit board 41, and the normally-closed contact NC and the normally-opened contact NO are formed on the other surface 41b of the print circuit board 41.

A clock adjustment apparatus delays a clock signal and adjusts a phase of the signal, thereby increasing or decreasing a delay amount of the clock signal in accordance with a phase relation between a data signal and an adjusted clock signal. The adjusted clock signal is used for receiving the data signal.

The invention discloses a semi-active magnetic-current variable-piezoelectric feedback type damper, comprising an inner tube and an outer tube. A revolving shaft is arranged in the middle of the innertube, and is fixedly connected with two vanes which are arranged by the angle of 180 degrees in the inner tube. The vanes are hollow and provided with mass blocks inside respectively, the upper and lower ends of each mass block are connected with the inner wall of the corresponding vane through springs. Two thin plates are arranged in the inner tubes and perpendicular to the vanes respectively. The cavity of the inner tube is filled with magnetorheological fluid. Piezoelectric generator units are respectively arranged on the surfaces of the thin plates, and pressure sensors are respectively arranged at the tops of the piezoelectric generator units. The outer wall of the inner tube is wound with a field coil along the axis direction. The pressure sensors, the field coil, a controller and an electric power extracting and storing unit are in series connection to form a closed loop, wherein the controller and the electric power extracting and storing unit are arranged at the top of the inner tube.

The invention discloses a self-powered rotary shaft vibration active control system and an active control method. In the self-powered rotary shaft vibration active control system, an inner housing isfixedly connected with a rotary shaft; a first end cover can be rotatably connected to the inner housing; a second end cover can be rotatably connected to the inner housing; the outer housing is fixedly connected to the first end cover and the second end cover; a permanent magnet is fixedly connected with the outer housing; a coil rack is fixedly mounted on the inner housing; a magnet exciting coil is wound on the coil rack, and generates relative motion with a permanent magnet to generate electric energy; an accelerated speed sensor is fixedly connected to the rotary shaft to measure a vibration signal of the rotary shaft in real time; an elastic element is fixedly connected to the rotary shaft; an actuator is fixedly connected to the elastic element, so that applied acting force acts onthe rotary shaft through the elastic element; the controller is electrically connected to the magnet exciting coil and the accelerated speed sensor; by responding to the vibration signal, the controller analyzes and processes the vibration signal to form a control signal; and by responding to the control signal, the actuator applies acting force on the rotary shaft through the elastic element to actively control radial vibration of the rotary shaft.

The invention discloses a semi-active magneto-rheological tuned mass damper. The semi-active magneto-rheological tuned mass damper comprises a barrel body; a connection block is arranged in a bottom plate of the barrel body; and a working cylinder is fixed to the connection block. Separation plates are arranged in the working cylinder, and the working cylinder is divided into a center cavity, damping cavities and side cavities. The center cavity is internally provided with a mass block capable of horizontally moving in the axis direction of the axis of the working cylinder. The center of the mass block is provided with a groove and a rolling bearing, and the periphery of the mass block is connected with piston rods capable of sliding along the rolling bearing. The damping cavities are internally provided with pistons, and the pistons are fixedly connected to the piston rods. The piston rods penetrate through holes reserved in the partition plates, extend into the side cavities and areconnected with one ends of springs in the side cavities. The other ends of the springs are fixedly connected into the working cylinder. The damping cavities are filled with magneto-rheological fluid,and powered-on coils are wound around the damping cavities. The powered-on coils are connected with an induction control device inside the barrel body.

The invention discloses an adaptive suspended liquid mass double-tuned damper for vibration control of an offshore fan, which includes at least one group of adaptive hybrid frequency modulation and translational control systems arranged at the maximum amplitude of the controlled vibration type inside the fan tower, an automatic Adapt to the active variable damping torsional vibration control system and control system; the self-adaptive hybrid frequency modulation translational control system includes a primary frequency modulation translational control unit and a secondary frequency modulation translational control unit; the adaptive active variable damping torsional vibration control system includes rotational torsional vibration Control unit and variable damping control unit; the control system is used to collect the real-time vibration state of the fan tower, and control the first-level frequency modulation and translation control unit, the second-level frequency modulation and translation control unit, the rotation torsional vibration control unit and the variable damping control unit. unit is controlled. The invention includes an adaptive hybrid frequency modulation translational control system and an adaptive active variable damping torsional vibration control system, respectively controlling the translational motion and torsional motion of the offshore wind turbine under the coupled action of wind, wave and flow.

The invention discloses an adaptive active-passive hybrid tuning mass damper for offshore wind turbine vibration control, which includes at least one set of adaptive variable damping passive control systems arranged at the maximum amplitude of the controlled vibration type inside the wind turbine tower, and an adaptive variable damping passive control system. The direction changing active control system and the control system; the adaptive variable damping passive control system includes a reciprocating motion unit and a variable damping unit. The corresponding vibration control system can be activated according to the different vibration levels of the fan tower. Among them, the adaptive variable damping passive control system can use the instantaneous rheological characteristics of the magnetorheological damping fluid to instantly adjust the flow state of the magnetorheological damping fluid and consume it in time. The vibration energy of the fan improves the time-lag problem of the traditional vibration control device and ensures the safe operation of the fan; the self-adaptive variable-direction active control system can instantly adjust the direction of the output control force through the electric-driven rolling bearing, and the control reliability is high and the effect is high. it is good.

The invention discloses a universal semi-active magnetorheological damping device. The universal semi-active magnetorheological damping device comprises an inner cylinder, an outer cylinder and a rotary disc and is characterized in that the inner cylinder is fixed onto the rotary disc, and the inner cylinder can rotate in optional directions under the effect of the rotary disc; the rotary disc isconnected with an induction control device; a connecting block is arranged inside an inner cylinder bottom plate, and a working cylinder is fixed on the connecting block; partitions are arranged inside the working cylinder to separate the interior of the working cylinder into a central cavity and damping cavities; a mass block which can horizontally move along the axis direction of the working cylinder is arranged in the central cavity; the mass block is fixedly connected with a piston rod which can axially move along the working cavity; a piston is arranged inside each damping cavity, and thepiston rod penetrates through holes reserved in the partitions and extends into the damping cavities to be fixedly connected with the pistons; shape memory alloy springs sleeve the piston rod locatedin the working cavity, one end of each spring is fixedly connected to the mass block, and the other end of each spring is fixed to the corresponding partition; each damping cavity is filled with magnetorheological fluid, an energizing coil wind the outside of each damping cavity, and the energizing coils are connected with the induction control device.

The invention provides an analog storage battery direct-current power supply, which comprises a power supply converter, a main loop current detection device, a feed load controller and a feed load. The feed load controller regulates the feed load according to feedback voltage and comprises a signal amplification circuit, a signal processing circuit and a signal output drive circuit which are connected in turn; the signal amplification circuit is used for shaping and amplifying a signal output by the main loop current detection device; the signal processing circuit consists of a plurality of light beam drivers which are connected in series; and the output port of each light beam driver is connected with the feed load through the signal output drive circuit. A hardware drive electronic loadsystem improved by an analog storage battery is controlled by hardware, has reaction speed higher than that of the system controlled by software, and effectively improves time lag caused by feedback in software control, so the response speed of an electronic load is increased, the requirement on the work capacity of switching devices such as an insulated gate bipolar transistor (IGBT) and the like is reduced, and the service life of equipment is prolonged.

The invention discloses a semi-active magneto-rheological intelligent tuning damping device. The device comprises a cylinder body, wherein a mass block is arranged in the center of the cylinder body,work cylinders are arranged in the left, rear, left and right directions in the cylinder body respectively, and the mass block is connected with the front and rear work cylinders or the left and rightwork cylinder through rigid rods respectively; each work cylinder is divided into three independent cavities by partition plates, wherein the middle cavity is a damping cavity, and the cavities at the two sides are side cavities; the side cavities are internally provided with springs connecting the corresponding work cylinder the corresponding partition plates, each damping cavity is filled witha magneto-rheological liquid, each damping cavity is internally provided with a piston, the two ends of each piston are connected with piston rods respectively, each piston rod penetrates through thecorresponding side cavity and is connected with a sliding block, and the two adjacent piston rods of the corresponding adjacent work cylinders are connected with a same sliding block; the sliding blocks are arranged on sliding rails; an energized coil winds each piston, and each energized coil is connected to an induction control device.

An image display control apparatus includes an image data supply section that supplies an image composed of a plurality of pixels arranged two-dimensionally in a matrix form as captured image data, a mask data supply section that supplies mask data for masking the image data, an imaging instruction accepting section that validates an imaging instruction acceptance signal when accepting an operation input corresponding to an imaging instruction, and a drawing section that sequentially draws the respective pixels, each having a pixel value, in the image data every predetermined period. When detecting that the imaging instruction acceptance signal is valid, the drawing section draws the pixels such that each pixel has a value including the mask data as the pixel value after the detection.

The invention discloses a self-powered type magneto-rheological damping device which comprises an outer barrel, wherein two inner barrels are fixed in the outer barrel, and the insides of the inner barrels are hollow to form damping cavities; a ball screw pair is arranged between the inner barrel, rigid rods are respectively connected to the two ends of the ball screw pair, and the two rigid rodspenetrate through the damping cavities to be connected with an inner wall of the outer barrel; a plurality of blades are fixedly arranged on the parts, in the damping cavities, of the rigid rods, theinner barrels are filled with magneto-rheological fluid, and the outsides of the inner barrels are wound by electrified coils; a movable device connected with the ball screw pair is arranged under theball screw pair, a mass block is arranged in the movable device, steel plates are arranged at the two sides of the mass block, magnets are arranged on a lateral wall of the movable device, and the steel plates are located among adjacent magnets; rotors are in interference fixed connection to the peripheries of the rigid rods, and each rotor is composed of a permanent magnet and a rotor magnet yoke; a stator core is arranged at the periphery of each rotor, a stator winding is arranged on each stator core, a stator shell is fixedly connected to the outside of each stator, and the stator shellsfixedly contact outer walls of the inner barrels.

The invention discloses an energy-feed composite anti-galloping energy dissipation spacer comprising a body, wherein a cavity is formed inside the body; an excitation coil is mounted on the inner sideof the body; a metal clamp is arranged on the outer side of the body; a first insulating layer is arranged between the excitation coil and the body for insulation; a ring barrel filled with a magnetorheological fluid is arranged in the inner ring of the excitation coil; a metal ball which can roll in the ring barrel is arranged in the ring barrel; a plurality of piezoelectric generating units areinstalled at intervals on the inner ring of the ring barrel along the circumferential direction; pressure sensors is disposed at the two ends of each piezoelectric generating unit; the piezoelectricgenerating unit is connected in series with an electric energy extraction and storage unit, a controller and the excitation coil to form a closed loop; the inner ring of each piezoelectric generatingunit is provided with a second insulating layer; and an electromagnetic particle vibration absorption body is disposed on the inner side of the second insulating layer.

The invention discloses a semi-active porous self-powered multi-dimensional shock absorber. The semi-active porous self-powered multi-dimensional shock absorber comprises two spherical cavities insideand outside, the two cavities are connected through spring devices, and the inner cavity and the outer cavity are filled with porous material. The inner spherical cavity is hollow, and a spherical liquid container is arranged in the center of the inner spherical cavity. A certain number of mass balls are arranged inside the inner cavity; the spherical liquid container in the center of the inner cavity is connected with the wall of the inner cavity through cylindrical channels; damping channels are arranged in the cylindrical channels, and the damping channels are externally wound with magnetexciting coils; and a piezoelectric power generating unit is arranged on the inner side wall of the inner cavity, and the piezoelectric power generating unit is connected in series with a controller and an electric energy extraction and storage unit to form a closed loop, and the controller and the electric energy extraction and storage unit are fixed to the outer wall of the cylindrical channels.The eight spring device, the eight cylindrical channels and eight piezoelectric power generating devices in vertical planes are evenly distributed. The vertical planes rotate around the central axisof a sphere, and the eight vertical planes are evenly distributed within 360 degrees of the horizontal plane.