88results about How to "No shock" patented technology

The invention relates to a quantitative detection device based on fibrous-membrane gathering and separation and a detection method thereof. The quantitative detection device comprises a separation testing cup, a reaction cup, an analysis buffer solution and a cleaning solution; wherein the separation testing cup comprises a receiving tank, a water absorption cup and millipore filters between them. A capture agent and a labeling agent are solidified on the bottom of the reaction cup and the capture agent is fixed on the surface of latex beads. The detection method comprises: conjugation reaction, separation, cleaning and detection. In the invention, not only the characteristics of convenient operation and rapid detection of immune infiltration (IF) and immunochromatography (IC) are maintained, but also precision and sensitivity of the detection are obviously better than that of IF and IC. Therefore, quantitative immunodetection and nucleic acid hybridization analysis can be implemented effectively. The invention can be used for the quantitative detection of substances such as protein, nucleic acid, small molecule and microbe.

The present invention is limit load regulating method and apparatus for hydraulic bull dozer. The present invention features that by means of connecting the throttle valve sensor, the engine rotation speed sensor, walking motor rotation speed sensor and motor proportion valve to the micro controller (MC), connecting the engine to variable displacement oil pump and MC, the calculation in MC of the difference between practical rotation speed and the set value of the engine and the motor based on the signals from the sensors, the data processing and PID operation, the limit load regulating apparatus regulates the current of the electric proportion valve in the variable displacement oil pump and the current of the electric proportion valve in the motor to maintain the rotation speed of the engine in the constant value. The present invention makes the hydraulic bull dozer operate in optimal rotation speed with less fluctuation in high response speed.

The invention relates to a solar energy heating system combined with a sitting and lying appliance, which comprises a sitting and lying appliance, a solar energy collector, an auxiliary heat source, a circulating pump, and correlative pipelines and valves, wherein a sealed inner shell is arranged in the sitting and lying appliance, a phase change heat-accumulating material is filled in the sealed inner shell, a heat exchange pipe is embedded in the phase change heat-accumulating material, the inlet and outlet ends of the heat exchange pipe are provided with valves, the heat exchange pipe is connected with the inlet and outlet valves, the circulating pump and the solar energy collector through a pipeline to form a closed loop, and a heat transfer fluid is filled in the heat exchange pipe. The heat exchange pipe can be a series type coil pipe or a parallel connection coil pipe, and can be arranged in a single layer or a plurality of layers. The sitting and lying appliance has the functions of both a heat accumulator and a heat radiator. The solar energy heating system making use of the solar energy, phase change heat accumulation and the sitting and lying appliance combination is clean, comfortable and safe, and can greatly reduce the area of the heat accumulator to improve the efficiency of the heat accumulator while building a local heat comfortable environment.

The invention belongs to the technical field of electromobile power transmission, solving the problem that rigid combination brings impact during gear shifting in the prior art. A transmission rotor with a buffer function comprises a motor (3), wherein the motor (3) is connected with a box (21); a motor shaft (46) and an output shaft (5) arranged in the box (21); and respective transmission gears are arranged on the shafts. The transmission rotor with the buffer function is characterized in that a damping spring (38) is arranged between the motor shaft (46) and a rotator body (8); and the power of the motor (3) is transmitted to the output shaft (5) after buffering.

The present specification provides a forwarding method of a bidirectional forwarding detection (BFD) message and a network device. The method comprises the steps: sending a standby BFD message on a forwarding chip of a source node of BFD detection, so when the BFD message is forwarded through an aggregation link or an equivalent multipath ECMP link, sending the BFD message corresponding to the main address information and the BFD message corresponding to the standby address information through different member links of the aggregation link or the equivalent multipath ECMP link, and when a member link in the aggregation link or the equivalent multipath ECMP link fails, forwarding the message through other member links which do not fail; therefore, the down event cannot be reported on the software level of the CPU, and the oscillation of the BFD session cannot occur.

The invention discloses a storage battery voltage balancing device and belongs to intelligent charging and discharging control devices of storage battery packs for direct-current power sources in an electrical power system. A storage battery charging control circuit is connected with a single chip, a storage battery managing chip is connected with the single chip via an SPI (serial peripheral interface) bus. In a storage battery voltage acquisition circuit, a storage battery pack is formed by a plurality of storage batteries which are mutually serially connected, and a positive electrode of every storage battery in the storage battery pack is connected with the storage battery managing chip. In a storage battery discharging control circuit, the positive electrode of every storage battery is connected with a source electrode D of a P-type MOSFET (metal-oxide -semiconductor field effect transistor), and the negative electrode of every storage battery is connected with the storage battery managing chip. During discharging, only overcharged batteries are discharged; and during charging, only batteries with low capacities are charged. The storage battery voltage balancing device is small in size, low in noise, high in reliability and real-time in control.

The invention aims to provide a construction method for concrete piles. The concrete piles with both higher compression bearing capacity and higher pulling resistance can be rapidly, simply and conveniently formed through the method. The construction method comprises the following steps of: 1), sinking outer tubes to projected depth; 2), respectively putting inner pounders in the outer tubes and knocking out the outer tubes; 3), filling in dispersed stuffing batch by batch and squeezing; 4), filling in harsh concrete batch by batch and squeezing; 5), laying up reinforcement cages of which the bottom parts are respectively provided with main reinforcements; 6), respectively putting inner tubes in the reinforcement cages, and respectively putting inner pounders in the inner tubes; 7), filling in the harsh concrete in the reinforcement cages, and hammering the inner tubes to perform squeezing; 8), repeatedly filling and squeezing the harsh concrete to enable the main reinforcements at the bottom ends of the reinforcement cages to be scattered outwards to be built in the harsh concrete in the manner of wrapping; 9), pouring concrete into the outer tubes to pile heads; and 10), lifting out the outer tubes, and vibrating the concrete to be compact.

The invention discloses an intelligent real-time seamless switching two unit standby method. The method is based on a two unit standby system, wherein a major state server and a standby state server are registered through two unit standby protocols and then form the two unit standby system. The method particularly includes the following steps that (1) the standby state server sends a request for entering two unit standby and judges request reply information; (2) the standby state server determines whether standby connection is established or not according to the request reply information; (3) after the standby connection is established, the standby state server waits for receiving a heartbeat request, if the heartbeat request is received, the standby state server sends a heartbeat request reply, waits for standby operation, and backups data sent by the major state server, if the heartbeat request is not received, the standby state server is initiatively switched to the major state server through the two unit standby protocols. The method further includes the working process of the major state server. Intelligence and real-time performance of the system are guaranteed, network oscillation generated in the process of switching the major state server and the standby state server is avoided, and operation of network users can not be affected.

The invention discloses a cement-stabilized-macadam mixture design method, and belongs to the field of road engineering. The cement-stabilized-macadam mixture design method is characterized in that the fractional step mixing method is adopted in the mixture mixing process, the rotating compaction forming method is combined, and a test piece is obtained. Compared with an existing design method, by means of the cement-stabilized-macadam mixture design method, the technical problem that as the actual compaction state of a pavement-base construction site cannot be reflected in the traditional design process, the performance of the mixture is uneven is solved, the using amount of cement and the using amount of water are reduced on the premise that the performance requirements can be met, the aims that the design performance of the mixture is stable, economical and environmentally friendly are achieved, and the cement-stabilized-macadam mixture design method has the quite-good popularization and application value.

A method for implementing the dual-plane damping and centrifugal speed limitation features that a pair of spiral sleeves on spline shaft is engaged with the centrifugal block to change the radial centrifugal force of said centrifugal block to axial push force, which pushes the damping plate to act on the friction plate for obtaining the dual-plane damping force moment to limit speed. Two speed limiters and the lowering stabilizer, which are designed by said method, are also disclosed.

The invention discloses a health elevator device. The health elevator device consists of an elevator control cabinet transformer unit, a single-phase inverter power module unit, a boosting transformer unit, a normal / power failure conversion circuit unit, a voice player, a fan, a negative ion generator, a single-phase inverter pulse width modulation (PWM) wave generator, a storage battery and a charging / discharging unit, wherein negative ions of the negative ion generator are fed into a cage by using the fan; when an external power grid is operated normally, the power of the negative ion generator and the power of the fan are supplied by the external power grid; when the external power grid is operated abnormally, the power of the negative ion generator and the power of the fan are supplied by a backup reverse power supply; and when the power fails, the power of the voice player is supplied by the storage battery, and the voice player plays light music and calm voice. The health elevator device can not only be used for a new elevator, but also be used for changing a control system of an old elevator. When the power fails, a backup power supply is adopted for supplying power, an airenvironment of the cage cannot change badly because of the failure of the power, and the light music and the calm voice are played in time, so that intense sentiment, generated because of the power failure, of passengers is eased.

The invention discloses an air feeding and discharging adjustment system with multiple connection pipes in the technical field of internal combustion engines. The air feeding and discharging adjustment system comprises an air compressor, a turbine, an engine, the connection pipes, a volumetric cavity, a moving body, penetration pipes and an elastic part, wherein the first penetration pipe and the second penetration pipe penetrate through the upper wall surface and the lower wall surface of the moving body; and the right wall surface of the moving body is connected with the right wall surface of the volumetric cavity through the elastic part. In the working process of the engine, the moving body can move in the volumetric cavity left and right; under a working condition of low speed, the pressure of the left side of the moving body is relatively low, so that the moving body moves towards the left, the first connection pipe and the third connection pipe are communicated with each other, the air feeding amount of the air compressor is relatively increased, and the air compressor does not surge; and under a working condition of high speed, the pressure of the left side of the moving body is relatively high, so that the moving body moves towards the right, the fifth connection pipe and the sixth connection pipe are communicated with each other, the air feeding amount of the engine is relatively reduced, and the detonation pressure of each cylinder is reduced. The air feeding and discharging adjustment system is rational in design and suitable for turbine pressurization systems of engines and has a simple structure.

The invention relates to an abdomen massage device for shaking of waist parts of two sides. The abdomen massage device comprises an outer casing and a motor, wherein the motor is arranged at the top part of the interior of the outer casing, an eccentric wheel and a first rotor are sequentially and fixedly arranged on an output shaft of the motor, the extending end of the output shaft of the motor is movably connected with the bottom part of the interior of the outer casing, connecting handles are respectively arranged at the left part and the right part of the eccentric wheel along the circumferential direction, a waist support is arranged at the extending end of each connecting handle, one end of a transmission shaft is movably connected with the top part of the interior of the outer casing, the other end of the transmission shaft extends out of the outer casing, the transmission shaft is movably connected with the bottom part of the outer casing, a second rotor is fixedly arranged on the transmission shaft, and is connected with the first rotor by a conveying belt, the extending end of the transmission shaft is connected with a horizontal support frame, and a massage hammer sleeves the end part of the support frame. The abdomen massage device has the advantages that the massage hammer rotates and rolls on an abdomen of a human body to assist the left and right swinging of the waist supports, the muscle of the abdomen is exercised, and the purposes of gastrointestinal peristalsis, digestion and absorbing of foods, weight losing, body building and the like can be promoted.

The invention discloses a position feed-forward control method based on a linear tracking differentiator, and the method employs a position feed-forward control link, and extracts a differential signal (speed component) inputted at a position as the lead compensation of a given speed, thereby speeding up the position following response speed, and adjusting a feed-forward controller, so as to further reduce a tracking error.

The invention belongs to the technical field of wheels and provides a variable-speed hub motor which solves the problems that an original supporting shaft is provided with a guiding groove, an adjusting rod hole and a power line hole, and therefore the strength of the supporting shaft is lowered, the supporting shaft is prone to deformation and breakage, driving safety is affected, and heat of a motor wrapped by a hub ring can not be dissipated effectively. The variable-speed hub motor comprises a hub ring which is connected with an end face, the end face is connected with a hollow output shaft, a motor body is fixed on a supporting shaft, a power line of the motor body directly stretches out of a motor shell, and the motor body and a gearbox body are exposed out of the end face. The variable-speed hub motor is characterized in that the supporting shaft and a motor shaft are parallel, a driven gear is provided with inner teeth, the hollow output shaft is provided with a pawl moving groove, a pawl shaft penetrates through a pawl arranged in the pawl moving groove, the pawl can tilt in the pawl moving groove, and the pawl moving groove is provided with a pressure spring enabling one end of the pawl to tilt and to be clamped on the inner teeth.

The invention belongs to the technical field of electric vehicle power transmission and solves the problem of impact caused by rigid combination during gear shifting in the prior art. A two-way buffering transmission gear comprises a motor, the motor is connected with a box, a motor shaft, a main shaft and an output shaft are arranged inside the box, and a transmission gear is arranged on the motor shaft, the main shaft and the output shaft respectively. The two-way buffering transmission gear is characterized in that the input gear of the main shaft and the main shaft are provided with grooves respectively, damping springs are arranged in the grooves, part of every damping spring abuts against the input gear, part of every spring abuts against the main shaft, and power of the motor is transmitted to the output shaft after being damped and cushioned by the above mechanisms.

A compressor and turbine homo-mechanism regulating mechanism in the technical field of internal combustion engines comprises a compressor, a turbine, an engine, connecting pipes, a containing cavity, a moving part, penetrating pipes and an elastic part. Both the first penetrating pipe and the second penetrating pipe penetrate an upper wall and a lower wall of the moving part. A left wall of the moving part is connected with a left wall of the containing cavity through the elastic part. During operation of the engine, the moving part can move left and right in the containing cavity. At low operating speed, left pressure of the moving part is low, the moving part moves to the left, the first connecting pipe and the third connecting pipe are communicated with each other, air intake of the compressor increases relatively, and the compressor barely surges. At high operating speed, left pressure of the moving part is high, the moving part moves to the right, the fifth connecting pipe and the sixth connecting pipe are communicated with each other, air intake of the engine decreases relatively, and detonation pressure of cylinders lowers. The compressor and turbine homo-mechanism regulating mechanism is reasonable in design, simple in structure and applicable to turbocharging systems of engines.

The invention belongs to the technical field of internal combustion engines and relates to a regulating device for air intake and discharge flow of a supercharger. The regulating device comprises a compressor, a turbine, the engine, a connecting pipe, a volume chamber, a moving member and an elastic component, wherein the moving member is installed in the volume chamber, contacts with the inner wall surface of the volume chamber in a sealing mode and is connected with the right wall surface of the volume chamber through the elastic component. During operation of the engine, the moving member can move left and right in the volume chamber. Under a low-speed working condition of the engine, the moving member moves right, a first connecting pipe is communicated with a second connecting pipe, and the flow of the compressor is relatively large, so that the surge of the compressor can be prevented; and under a high-speed working condition of the engine, the moving member moves left, a third connecting pipe is communicated with a fourth connecting pipe, the performance of the turbine is reduced, the air intake of the engine is relatively reduced, and detonation pressures of the cylinders are reduced. The regulating device for the air intake and discharge flow of the supercharger is reasonable in design, simple in structure and suitable for turbine pressurization systems of engines.

The invention discloses an electric multifunctional standing hospital bed. The hospital bed comprises a bed board, a supporting frame, a lifting support, an inclined support and a bottom support. Thebed board comprises a side turning structure, a thigh board, a shank board, a back board and a fixing board. The back board, the fixing board, the thigh board and the shank board are sequentially arranged at the upper end of the side turning structure. The invention provides an electric multifunctional standing hospital bed, which integrates the functions of overall bed body lifting, head-fallingsupination, backrest lifting, leg lifting, left-right turning and 75-degree standing, can improve the effects of rescuing, treating and nursing patients by medical personnel and can improve the use comfort of a patient. The hospital bed integrates more functions, and the utilization rate of the hospital bed is increased. A temporary power supply is arranged in the hospital bed, power can be supplied under the emergency condition of external power supply obstacles, rescue and nursing of a patient are ensured, the life saving efficiency under the emergency condition is improved, and the application range of the hospital bed is widened.

The invention relates to a belly massager capable of bidirectionally rotating, comprising a motor (2), a sector gear (13), a reversing gear (3), a transmission gear (4), ear rings (5), a large and a small belt wheels (6 and 11), a belt (7), a massaging roller (8), a supporting frame (9), a transmission shaft (10) and a main gear (12), wherein the sector gear (13) is fixed on an output shaft of the motor (2); the large belt wheel (11), the main gear (12) and the supporting frame (9) are mounted on the transmission shaft (10); the massaging roller (8) is sleeved at the end of the supporting frame (8) to rotate freely; and the motion range is corresponding to the human body belly area. By utilizing the massaging roller (8) to bidirectionally rotate on the human belly to simulate massage by the human hand clockwise and anticlockwise, the massager can strengthen belly muscle, promote gastrointestinal motility, help digestive absorption and reduce fat and lose weight; a user can use the massager when sitting or lying down, and can massage while having a rest; and the healthy persons and the patients with gastrointestinal diseases can both use the massager.

The present invention relates to the technical field of loudspeaker control systems and particularly relates to a remote intelligent control system for musical instrument loudspeaker. The remote intelligent control system comprises a communication system, a remote control end, a power amplifier system, a low-pass filter circuit, a protection circuit, a bus system, and a central processing system. The power amplifier system is used for amplifying a weak signal from a sound source or a preamplifier, the signal is converted by the central processing system and then is transmitted to the remote control end through fiber communication, and the remote intelligent control is realized. The low-pass filter circuit allows a low frequency signal to pass and does not allow middle and high frequency signals to pass, the low-pass filter circuit has the effects that the middle and high pitch components in the audio signal are filtered, a low pitch component is enhanced to drive a low pitch unit of the loudspeaker, and the low pitch experience sense of the speaker can be increased. The protection circuit has the advantages of large output power, a small gain difference of two sound channels, no impact sound of the loudspeaker in turn-on and turn-off, and reliable overheat and overload short circuit protection. The remote intelligent control system has the advantages of a simple structure, a high degree of intelligence, a wide application range, and high creativity.

The invention belongs to the technical field of electric vehicle power transmission and solves the problem of impact caused by rigid combination during gear shifting in the prior art. A two-way buffering transmission gear comprises a motor, the motor is connected with a box, a motor shaft, a main shaft and an output shaft are arranged inside the box, and a transmission gear is arranged on the motor shaft, the main shaft and the output shaft respectively. The two-way buffering transmission gear is characterized in that the input gear of the main shaft and the main shaft are provided with grooves respectively, damping springs are arranged in the grooves, part of every damping spring abuts against the input gear, part of every spring abuts against the main shaft, and power of the motor is transmitted to the output shaft after being damped and cushioned by the above mechanisms.

The invention discloses preparation of a magnetic cucurbituril and application of the magnetic cucurbituril in removing HA (humic acid) pollutants from drinking source water. The invention realizes synchronization of flocculation material preparation and a magnetism covering process. The preparation process is simple, and the magnetic cucurbituril has good dispersibility. Due to great relative gravity of a magnetic flocculating agent, the flocculation and precipitation time is greatly shortened. After flocculation balance, an external magnetic field can realize rapid magnetic separation, and the flocculating agent can be recovered effectively. When applying the flocculating agent in HA pollutants in drinking source water, the removal rate of the HA pollutants can reach over 98.2%, which is far higher than the removal rates of HA by products of the same kind. At the same time, the preparation method of the magnetic cucurbituril in the invention is characterized by simplicity and convenient operation, and the treatment effect is obvious. The flocculating agent can realize good magnetic separation and can be recycled.

The invention provides a construction method for a static pressure carrier pile. The construction method for the static pressure carrier pile includes the steps that firstly, an outer pipe is clasped by a clamping system of a static pile driver, and an inner pipe is sleeved with the outer pipe in an overlapped manner; secondly, the outer pipe is pressed by the designed depth in a static pressing manner; thirdly, the inner pipe is clasped by the clamping system; fourthly, the inner pipe is lifted up, a gap between the inner pipe and the outer pipe is filled with a fine particle packing material, the inner pipe is clasped, and the packing material is pressed downwards; fifthly, downward-pressing operation of the packing material is repeated till a carrier is formed at the bottom end of the pile, and the tip resistance pressure numerical value is observed; and sixthly, a cast-in-situ or embedded concrete pile body is manufactured. The other construction method for the static pressure carrier pipe includes the steps that firstly, sinking of a pile casing is conducted; secondly, a prefabricated pile body is clasped by the clamping system of the static pile driver and is sunk into the pile casing; thirdly, the prefabricated pile body is lifted up, a gap between the pile casing and the prefabricated pile body is filled with the fine particle packing material, the prefabricated pile body is clasped, and the packing material is pressed downwards; fourthly, downward-pressing operation of the packing material is repeated till the carrier is formed at the bottom end of the pile, and the tip resistance pressure numerical value is observed; and fifthly, the gap between the pile casing and the prefabricated pile body is filled with cement mortar, the pile casing is lifted out, and the pile is formed.

The invention relates to a domino type comforting massage cushion, which is mainly composed of a micropump (1), a pressure-supply main pipeline (2), a fluid heater (3), a temperature sensor (4), an automatic overpressure protection valve (5), a pressure-supply branch pipeline (6), a main pipeline diverging tee (7), a two-position three-way electromagnetic valve (8), a monomer bag (9), a waist bag (10), skin (11), a depressurizing branch pipeline (12), a depressurizing main pipeline converging tee (13), a depressurizing main pipeline (14), a depressurizing main pipeline constant-pressure protection valve (15), a manual-exhausting dual-purpose valve (16), an operation controller system (17) and a fixed support frame, wherein the monomer bag (9) and the waist bag (10) are arranged in the skin (11) to form a fluid power massage thruster (18). The domino type comforting massage cushion has simple structure and strong gentle feeling. The domino type comforting massage cushion being similar to habits of people can orderly carry out massage, and the massage effect is good. The structure is widely applied to the field of the domino type comforting massage cushion.

The invention discloses a breaker with a function of vertical stress decomposing. The breaker comprises a guide portion. The guide portion is internally provided with a passage; the passage having a turn is divided two segments by the turn; one segment is provided with an entry in the surface of the guide portion; the length from the turn to the entry is larger than the height of a nipple of an ampule and that of the ampule. With the breaker, a medical worker can break the ampule just by directly inserting the ampule into the entry of the breaker in the height-wise direction and applying force in the same direction; during use of the breaker, resultant force borne by the ampule is from the height-wise direction, the stress is decomposed into breaking force whereby the nipple is broken and recoiling force deviating to the horizontal direction, the breaking process is stable and basically free of vibration, and transverse vibration in the traditional breaking process is avoided. The process of using the breaker is free of flying of broken glass and splashing of liquid medicines, the risks that foreign matters are mixed in the liquid medicines and the liquid medicines are mixed during the opening process of the ampules are decreased, and safety of medical staff is guaranteed effectively.

The invention belongs to the technical field of the power transmission of an electric motor car, in particular to an automatic variable power transmission mechanism of an electric motor car, comprising a box body, and a motor is arranged on the side wall of the box body and is provided with a motor shaft. The box body is internally provided with an input shaft, an output keyway shaft and an axle, wherein the motor shaft is in transmission connection with the input shaft; the output keyway shaft is in transmission connection with the axle; the input shaft is provided with a high-speed driving gear and a low-speed driving gear; the output keyway shaft is provided with a clutch on which a high-speed driven gear is fixed, a one-way driver is arranged between the output keyway shaft and the low-speed driven gear, the output keyway shaft is provided with a driven keyway sleeve, a driven friction sheet and a driving friction sheet are arranged between the driven keyway sleeve and the clutch, a driving-driven keyway sleeve separating spring is arranged on the end surfaces of the friction sheets, a slope groove is arranged between either friction sheet and the bottom end of the clutch, an eccentric bead is arranged in the slope groove, and an eccentric axial repulsion mechanism is formed by the slope groove and the eccentric bead.

The invention belongs to the technical field of electric vehicle power transmission, and discloses a transmission spindle with buffer. The transmission spindle solves the problem of an impact due to rigid combination during gear shift in the prior art. The transmission spindle with the buffer comprises a motor, wherein the motor is connected with a box body; a motor shaft, a spindle part and an output shaft are arranged in the box body; and respective self-transmitting gears are arranged on the motor shaft, the spindle part and the output shaft. The transmission spindle is characterized in that input teeth on the spindle part are provided with bumps; the bumps are arranged in grooves in a driving gear; one end of each damping spring pushes against the driving gear; the other end of each damping spring pushes against the bumps of the input teeth; and power of the motor generates the buffer through the mechanism, and then is transferred to the output shaft.

The invention relates to the image brightness automatic control technology field and particularly relates to a constant image brightness automatic adjusting circuit. According to the adjusting circuit, a set gray value signal and an output signal of a position feedback loop connected with an input end of a contrast module A are respectively received by two input ends of the contrast module A, an output end of the contrast module A is directly connected with a position loop operation network, two input ends of a contrast module B are respectively connected with the position loop operation network and an output end of a rate feedback loop, an output end of the contrast module B is connected with a rate loop operation network, an output end of the rate loop operation network is sequentially connected with a digital analog converter (DAC) and a power amplification module, and a motor driving control signal is outputted. Through feedback proportion coefficients and a lead-lag network of the two loops in the adjusting circuit, the system realizes high dynamic following and no concussion. The adjusting method is stable and reliable, the camera image can be constantly maintained at the set gray value, and the response speed is fast.