42results about How to "Overcoming hysteresis" patented technology

The invention discloses a power battery water-cooling unit system and an intelligent temperature difference control method thereof. The power battery water-cooling unit system comprises a water cooling unit and a water cooling unit controller, wherein the water cooling unit comprises a compressor, a pressure switch, a condenser, a condensation fan, a liquid storing and drying tank, an expansion valve, a plate type exchanger, a PTC heater, a three-way valve, an inlet water temperature sensor, a power battery box, an outlet water temperature sensor, a water tank and an electronic water pump, wherein the compressor, the pressure switch, the condenser, the condensation fan, the liquid storing and drying tank, the expansion valve and the plate type exchanger are connected with each other in series. Through the power battery water-cooling unit system, the automation degree of the control of the power battery water-cooling unit is improved; the control system is capable of judging the difference between the battery average temperature and the outlet water temperature of the water cooling unit, adaptively adjusting operation rotation rate of the compressor, the electronic water pump and the condensation fan in real time through an intelligent control algorithm, indirectly controlling a battery to operate in the optimal temperature range and the optimal temperature difference range and predicting the battery temperature trend in advance through ampere-hour integral.

The invention discloses a power battery water chilling unit system and an intelligent control method thereof. The power battery water chilling unit system comprises a water chilling unit and a water chilling unit controller; the water chilling unit comprises a compressor, a pressure switch, a condenser, a condensation fan, a stored liquid drying tank, an expansion valve, a plate type exchanger, a PTC heater, a three-way valve, an inlet water temperature sensor, a power battery box body, an outlet water temperature sensor, a water tank and an electronic water pump. The compressor, the pressure switch, the condenser, the condensation fan, the stored liquid drying tank, the expansion valve and the platy type exchanger are connected in series. The power battery water chilling unit system not only efficiently improves the degree of automation of control of the power battery water chilling unit, but the control system also can adjust the rotating speed of the compressor, the electronic water pump and the condensation fan adaptively, can keep the power battery working in the optimal temperature range and the temperature difference range; in addition, the battery temperature trend can be known in advance through an ampere-hour integer; and as a correction factor is added, the hysteresis of temperature collection can be solved efficiently.

The invention discloses a method for eliminating transformer measurement errors by active impedance vector voltage resultant. The method is to detect a current of a primary circuit of a secondary winding and a current of a detection winding of a transformer independently and respectively, convert the currents into voltages, amplify the converted voltages, input the converted voltages to an add operation amplifier to sum the converted voltages and complete output of active impedance vector voltage resultant. The method can eliminate transformer measurement errors and improve measurement precision.

A control method of a carbon dioxide incubator includes the following steps: obtaining a current temperature and preset temperature of an inner chamber of the carbon dioxide incubator; outputting indirect heating power of an inner chamber wall according to a preset PID control algorithm; judging whether the temperature difference between the preset temperature and the current temperature belongs to a steady-state interval; if the temperature difference between the preset temperature and the current temperature belongs to the steady-state interval, obtaining minimum power of indirect heating ofthe inner chamber wall in a first preset period under the condition that the temperature difference belongs to the steady-state interval; generating set power according to the minimum power; and adjusting the set power to initial power of indirect heating of the inner chamber wall in a second preset period continuous with the first preset period, wherein the set power is greater than or equal tothe minimum power. The invention also discloses a control system and the carbon dioxide incubator. After the carbon dioxide incubator enters steady-state operation, pre-intervention is directly performed on the initial power of the next cycle according to the current operation state, so that the initiative of temperature control is realized, and the control effect is improved.

The invention belongs to the technical field of gravure printing equipment and particularly relates to a coagulation-preventing circulation ink return system for a gravure printing machine. The coagulation-preventing circulation ink return system which can effectively improve current gravure printing machine ink skin coagulation comprises an ink conveying roller and an imprinting roller. An ink plate for storing surplus ink at the ink conveying roller is disposed below the ink conveying roller. The ink return system further comprises an ink scraper disposed on the surface of the ink conveying roller and an ink supply component supplying ink to the surface of the ink conveying roller. The ink supply component comprises an ink pump. The ink inlet end of the ink pump is communicated with the ink plate and/or an external ink box. The ink outlet end of the ink pump points at the surface of the ink conveying roller. The ink return system further comprises a branch ink pipe. The inlet end of the branch ink pipe is communicated with the ink outlet end of the ink pump, the outlet end of the branch ink pipe extends into the ink plate, the outlet end of the branch ink pipe is parallel with the ink level in the ink plate, and the ink outlet direction of the branch ink pipe is horizontal. The coagulation-preventing circulation ink return system has the advantages that low cost is achieved, and ink skin coagulation and adhesion caused by unsmooth surface ink flowing of a traditional gravure printing machine can be improved.

The invention discloses an embedded intelligent multi-sensing system oriented to a power lithium battery. The system comprises a temperature sensor, a pressure sensor, a gas sensor and a read-out circuit chip packaged into a tube shell by adopting a system-level package technology; the temperature sensor, the pressure sensor, the gas sensor and the read-out circuit chip in the tube shell accomplish the wire bonding by using gold wires so as to realize electric signal transmission; the temperature sensor, the pressure sensor and the gas sensor are connected with the read-out circuit chip through a switch module; the switch module inputs the input signal into the read-out circuit chip according to the predetermined selectivity. By designing the embedded micro intelligent multi-sensing system is designed in the original power lithium battery, multiple-state information in the power battery can be timely acquired, thereby accomplishing the index prediction by starting the information processing based on the state information.

The invention relates to a device and a method for detecting sintering homogeneity. The device comprises sampling guns, a hose, a vacuum pump and a gas analyzer, wherein the suction end of the vacuum pump is connected to joints of the sampling guns through the hose, and the other end of the vacuum pump is connected with the gas analyzer. The method comprises the following steps: the three sampling guns with different lengths are placed at positions of grate bars at the bottom part of a sintering trolley respectively, and travel with the sintering trolley; when the sintering trolley runs to an initial ignition section, the hose connected with the vacuum pump is connected to the three sampling guns, combustion exhaust gas is pumped into the gas analyzer for detection of the volume concentrations of CO, CO2 and O2, the symmetry and the continuity of the combustion exhaust gas are analyzed, and the transverse homogeneity and the longitudinal homogeneity of sintering of the trolley are judged. By online detection of sintering smoke composition, the device and the method have the advantages that the magnitude of the transverse homogeneity and the magnitude of the longitudinal homogeneity of the sintering trolley can be accurately judged, and non-dead-angle gas composition analysis of the whole trolley is achieved; besides, the sintering operation process and the ore blending scheme can be improved and optimized in real time based on detection and judgment results, therefore, the quality of sintered ore is improved.

The invention discloses a wet clutch hydraulic system thermal resistance network model and an average temperature estimation method in the field of wet clutch temperature measurement. All elements andenvironments in a wet clutch hydraulic system to be equivalent to different nodes, and two nodes with heat exchange are connected through a connection lineto form a thermal resistance network model.The method comprises the steps of establishing a wet clutch hydraulic system thermal resistance network model, establishing a node thermal state equation, solving the model and the like. According tothe invention, the problems of poor hysteresis quality and universality of the existing wet clutch temperature measurement method are solved; all elements of the wet clutch hydraulic system are simplified into nodes, a system thermal working condition mathematical model is established, the average temperature of the wet clutch and lubricating oil is estimated accordingly, and the method has the advantages of being good in universality and high in reliability and can be widely applied to actual production.

The invention relates to a motor structure. The internal armature of the motor is provided in pivot with at least two foundation plates which are configured relative to each other at the front section and the rear section; each foundation plate is provided with a plurality of installation holes arranged in ring-like and is embedded with a permanent magnet; the two neighboring permanent magnets are of opposite magnet poles. While, the external armature of the motor is provided in pivot with a plurality of coils arranged in ring-like which are wound on a silicon steel plate group and relative to the permanent magnets of the two foundation plates. By resorting to relative rotation function of each coil to the front and rear sides of the permanent magnet, the invention enlarges the magnet line induced area and further increases the power output; the design of the suspension power supply (power-off) is applied to prevent the magnetic lag and save energy.

The invention discloses a plane air floatation workbench based on optical feedback. The plane air floatation workbench comprises a lower panel, an upper panel, an electromagnetic drive unit used for driving the upper panel, an air floatation unit used for suspending the upper panel, an infrared sensor set used for positioning and a control unit used for guiding and the upper panel to move and positioning the position where the upper panel moves. A control method comprises the following steps that an air film is generated at the bottom of the upper panel through an air flotation bearing firstly to enable the upper panel to suspend in air and to be able to freely move; then a transverse coil and a longitudinal coil are driven to work in a time division mode according to a preset movement track to enable the upper panel to quickly transversely wriggle or longitudinally wriggle; and finally infrared transceivers located in five orientations reflect infrared rays of different wave lengths to the upper panel, and the real-time position of the upper panel is determined by receiving reflected infrared image data, so that the driving time of a transverse driver and a longitudinal driver is determined, the corresponding speed of a platform is increased, and the corresponding positioning precision of the platform is improved. The plane air floatation workbench based on optical feedback is simple in structure, small in size, high in bearing capacity and positioning precision and stable and reliable in running.

The invention relates to a stereoscopic high-efficient and environment-friendly animal feeding apparatus comprising side guardrails, a front guardrail, an inclined base plate, a dirt drainage net, a feeding tank, a back sealing plate, an insulating curtain, a self-controller, material accumulating buckets, an energy-saving roof, a spraying pipe, a movable rail, terrestrial-heating valves, a waste heat valve, a drainage valve, an air conditioner and a proportional valve. The side guardrails are formed by left and right guardrails; the front guardrail is placed on the lower side of the front end of the guardrail body; the inclined base plate is slantwise connected to the lower side of the guardrail body; the dirt drainage net is placed on the upper side of the inclined base plate; the feeding tank is placed on the upper side of the dirt drainage net; the insulating curtain is mounted on the upper sides of the left and right guardrails; the self-controller is mounted on the upper sides of the side guardrails; the material accumulating buckets are placed on the upper sides of the side guardrails and the back sealing plate; the energy-saving roof is placed over the guardrail body; the spraying pipe is arranged over the movable rail; the movable rail is arranged on the inner walls of the side guardrails and an intermediate separation guardrail; the terrestrial-heating valves are connected to the lower sides of the front guardrail and the back sealing plate; the waste heat valve and the drainage valve are respectively connected to the lower sides of the side guardrails; the air conditioners are placed on the upper sides of the side guardrail; and the proportional valves are placed on the lower sides of the material accumulating buckets. The stereoscopic high-efficient environment-friendly animal feeding apparatus is suitable for promotion and application and has obvious comprehensive economic benefits.