21 results about "Operating life" patented technology

The invention discloses a gear service life evaluation method, and belongs to the technical field of aerospace mechanism service life evaluation. According to the technical scheme, firstly, a five-stress wear rate data set containing the rotating speed, the torque, the temperature alternating, the vacuum degree and the microgravity is established; then constructing a tooth surface solid lubricating film thickness evolution model based on a Hertz-Archard coupling model, and taking the film thickness approaching to zero as a failure criterion; acceleration factors under each acceleration working condition are calculated through model iteration, and a gear acceleration life test is carried out under an optimized working condition; after the test, the film thickness is measured and compared with model prediction, the rated working condition life of the gear is reversely deduced, the long-time on-orbit life of the gear is equivalently predicted through the short-time ground test, and high acceleration efficiency and reliability are achieved. The technical problems of environmental simulation distortion and low acceleration efficiency in aerospace lubrication gear service life evaluation are solved.

The application discloses a TBM cutter head main drive intelligent decision method and system, and belongs to the technical field of cutter head drive control. By constructing a master-slave type multi-drive unit collaborative architecture, unified regulation and control and target torque distribution of the drive system are realized; by monitoring current signals to identify faults, voltage vectors are reconstructed according to fault types, and continuous and stable output under faults is ensured; a disturbance observation method based on integral sliding mode is proposed, control deviation caused by system disturbance and parameter change is dynamically estimated and compensated; an MPTA control strategy of high-frequency virtual signal injection is designed, utilization of reluctance torque and stable tracking of the MTPA operating point are realized; the torque output capacity of the fault unit and the torque margin of the healthy unit are considered as a whole, a load distribution strategy is planned, and the overall load carrying capacity and operating life of the drive system are improved.

The present invention relates to a fastening device, particularly a support, designed and configured to receive a bearing in a textile machine, especially a rotor spinning machine, having at least one inner ring region and at least one outer ring region. To improve the safety of the operation of the textile machine, extend the operating life of the textile machine, and thus conserve resources, and to improve the operation of the textile machine, the inner ring region and the outer ring region are provided to be formed integrally.

The application discloses a kind of life prediction method and system based on bearing wear state monitoring, comprising the following steps: step S1, obtain the wear state historical time series data of a plurality of bearings representing the entire operating life, and fit out life curve function based on the wear state historical time series data;Step S2, the wear state data of the target bearing to be predicted is input into the life curve function to predict the remaining life of the target bearing, the application uses the wear state historical time series data of a plurality of bearings representing the entire operating life to fit out life curve function, can realize only the wear state data of bearing is obtained to obtain the remaining life of bearing, and based on principal component extraction when the wear state historical time series data is acquired, only the state monitoring data with strong correlation with life is retained, realize the effective compression of data, guarantee the prediction correctness of life curve function while improving the fitting efficiency.

Gate valve embodiments, including assemblies, seats and seals, kits, and associated methods, are provided to improve operational performance by a reduction of particle intrusion at associated seals. In an embodiment, a gate valve has an actuator, a gate connected to the actuator, a valve body, and a valve seat with a debris protection seal thereon and one or more debris cavities therein. The valve seat is positioned in a bore of the valve body. The debris protection seal is positioned in a seal recess of the valve seat to contact a distal radial wall of the bore to elongate a debris path, thereby to reduce debris migration to the bore that causes leaks. The debris cavities are positioned in a distal surface of the valve seat to capture debris that has migrated through the debris protection seal, further reducing debris migration to the bore that causes valve leaks.

The present application aims to provide a kind of self-checking method of air compressor working performance, which can monitor the internal mechanical wear and tear and external pipeline flow resistance of air compressor in real time, report the estimated results of relevant information in real time, and through self-checking and self-reporting the health condition of air compressor, can make the after-sales end intervene in targeted maintenance work, improve the service life of the whole machine, reduce the sudden failure of air compressor, and ensure the safe operation of vehicle.The present application includes air compressor, air tank, air compressor controller, instrument and vehicle controller, external air is accessed to the air inlet of air compressor through filter, the air outlet of air compressor is accessed to air tank through dryer, air compressor is electrically connected with air compressor controller, instrument, air compressor controller, dryer and air tank are electrically connected with vehicle controller.The present application is applied to the technical field of compressor control.

This invention relates to a pneumatic anti-manipulation load simulator and its simulation method, belonging to the field of load simulation technology. It solves the problems of existing anti-manipulation load simulators, such as numerous components, short service life, complex control, low loading accuracy, and large size. The pneumatic anti-manipulation load simulator of this invention includes: a cylinder assembly, an eccentric shaft, a transition shaft assembly, and a servo mechanism. The output end connecting rod of the cylinder assembly is rotatably connected to the eccentric shaft via a lug. The eccentric shaft can rotate around the output shaft axis of the servo mechanism under the drive of the cylinder assembly. The eccentric shaft is connected to the output shaft of the servo mechanism via the transition shaft assembly. When the cylinder drives the eccentric shaft to rotate, an anti-manipulation load can be applied to the output shaft of the servo mechanism through the eccentric shaft and the transition shaft assembly. The structure is simple and the control accuracy is high.

The present application relates to the technical field of power system, disclose a kind of station SVG reactive dead zone hedging distribution strategy and device.The station SVG reactive dead zone hedging distribution strategy of the present application includes the following steps: obtaining application station information;Obtain total reactive demand Q req ;Based on total reactive demand Q req , determine minimum constraint target T min Calculation method;Iterative solution minimum constraint target T min And store corresponding calculation result;Based on the total reactive demand and the minimum constraint target T min , determine the reactive power distribution strategy corresponding to each available SVG, obtain reactive power instruction matrix.The station SVG reactive dead zone hedging distribution strategy of the present application can realize the accurate distribution of reactive power instruction under different SVG rated capacity and different SVG reactive dead zone, improve the precision of station reactive control;It can be realized that each SVG reactive output load is minimum under the premise of meeting total reactive demand, corresponding SVG device loss is minimum, and the operating life of SVG device is improved.

A smart steering control system a paving or texturing machine receives path elements corresponding to current and future positions of the machine. By comparing the current and future elements, an expected completion time is derived for exiting the current position and entering the future position; the smart steering control system synchronizes adjustments of the machine's steerable tracks from the current path to the future path. The smart steering control system functions as a virtual tie rod, preventing damage, enhancing the traction control and pulling power of the machine, and preserving the operating life of its components.

A modular and on-demand battery thermal management system (BTMS) for an electric machine with a battery is disclosed. The BTMS may include one or more independently operable BTMS modules, where each BTMS module may be configured to cool a corresponding component of the electric machine, such as a particular battery pack. Each BTMS module, in turn, may include a plurality of BTMS units that cool coolant that is to be delivered to the components that are to be cooled within the electric machine. The individual BTMS units may be independently operable by a BTMS controller based at least in part on the cooling needs of the components to be cooled. The BTMS controller is also configured to select BTMS units to operate in a manner that maximizes the operating life and durability of the BTMS.

Provided are a compressor and a management system that are capable of extending the operating life of a compressor while easing the burden on a user.　A compressor 1 comprises a compressor body 3 that compresses air, and a control device 17 that controls the operation of the compressor body 3. If operation of the compressor body 3 is resumed when the stop time of the compressor body 3 is greater than or equal to a preset time A, the control device 17 executes a diagnostic operation mode which determines the presence or absence of abnormalities while reducing the load on the compressor body 3 relative to a regular operation mode.

Gate valve embodiments, including assemblies, seats and seals, kits, and associated methods, are provided to improve operational performance by a reduction of particle intrusion at associated seals. In an embodiment, a gate valve has an actuator, a gate connected to the actuator, a valve body, and a valve seat with a debris protection seal thereon and one or more debris cavities therein. The valve seat is positioned in a bore of the valve body. The debris protection seal is positioned in a seal recess of the valve seat to contact a distal radial wall of the bore to elongate a debris path, thereby to reduce debris migration to the bore that causes leaks. The debris cavities are positioned in a distal surface of the valve seat to capture debris that has migrated through the debris protection seal, further reducing debris migration to the bore that causes valve leaks.

An ingress prevention system for use with pneumatic or hydraulic jack cylinders prevents debris and / or fluids from gaining access to portions of the pneumatic or hydraulic jack cylinders. The ingress prevention system includes a boot operable to retain and / or seal at least a portion of one or more jack cylinders within a boot cavity. The ingress prevention system reduces a jack cylinder's exposure to debris and / or fluids to maintain performance and prolong the operating life of the jack cylinder. The ingress prevention system further comprises at least one barrel seal operable to wipe debris and / or fluids from the surfaces of a piston rod as the piston rod reciprocates within a barrel.

Monitoring system (300) for a superconducting magnet (200), comprising: a computer (CMP) connectable to the superconducting magnet (200) having a cryogenic system equipped with a compressor (5) and a cooling head (6) configured to maintain a cryogenic bath (3) at an operating temperature of a superconducting coil (1). The computer (CMP) comprises a computer program (SW) configured to receive historical / statistical data relating to the magnet and calculate an unreliability index RI by means of a sum of the following terms: a first term HMinCH expressing an operating life at the current time of the cooling head (6); a second term subtractive, which expresses a minimum statistical life of cooling heads, a third term FgpCH which expresses a probability of premature failure of the cooling head (6). The monitoring system is configured to generate messages with recommendations for a user in relation to operations to be performed on the magnet.

This application relates to the field of space electric propulsion technology, specifically to a method for establishing a variable boundary simulation model of an ion thruster gate assembly. The method includes: Step 1: dividing the gate into regions; Step 2: selecting the object to be studied within each region; Step 3: calculating the upstream ion density of each object; Step 4: calculating the corresponding Debye length and determining the maximum values ​​of the calculation region in the lateral and radial directions; Step 5: handling collisions between atoms; Step 6: establishing a simulation calculation model; Step 7: calculating the gate morphology; Step 8: correcting the gate simulation calculation model; and Step 9: completing the establishment of the variable boundary simulation model of the ion thruster gate assembly. This application utilizes the sputtering etching morphology obtained from simulation calculations to update and improve the simulation calculation model in real time, enabling more accurate prediction of the thruster's operational lifespan, significantly shortening the product development cycle and reducing development costs.

The invention relates to a method and a device for predicting the exhaust emissions of an exhaust gas aftertreatment system of an internal combustion engine, the exhaust emissions being influenced by exhaust gas aftertreatment devices (27, 29, 33) of the exhaust gas aftertreatment system (22), the functionality of at least one exhaust gas aftertreatment device (27, 29, 33) being checked by means of an on-board diagnostic unit (40), and calculating exhaust emissions by means of an emission model (42) from the combustion data and by means of a simulation of physical and chemical processes within the exhaust aftertreatment device (22). When a change in functionality of at least one exhaust gas aftertreatment device (27, 29, 33) checked by the on-board diagnostic unit (40) is detected, this change is transmitted to the emission model (42) according to the invention, and this change is taken into account when the exhaust emissions are calculated by means of the emission model (42). As a result, it is possible to ensure that real-time emissions of the internal combustion engine can be accurately predicted over the entire operating life.

A blower improving heat dissipation of a bearing and achieving long operating life without increasing the number of parts is provided. A bearing holding portion rotatably supporting a motor shaft, to which a rotor of a motor and an impeller are assembled on two longitudinal sides, respectively via a bearing, is assembled to a fan casing, and part of the bearing holding portion adjacent to the impeller extends to a position facing an air path and forms part of the air path.

Disclosed in the present disclosure are a driver chip of a vehicle and a determination method therefor. The method relates to the field of vehicles, and comprises: acquiring a performance parameter of a driver chip; on the basis of the performance parameter, calculating a maximum junction temperature of the driver chip and the operating life of the driver chip at the maximum junction temperature; and on the basis of the maximum junction temperature and the operating life, determining whether the driver chip is a target driver chip for the vehicle. The present disclosure solves the technical problem of low efficiency in vehicle design caused by low standards for determining vehicle driver chips.

The application relates to a method, system, device and medium for predicting the service life of a water turbine runner, which comprises the following steps: obtaining basic information of each working condition point of a water turbine unit, wherein the basic information comprises an operating water head, an output size and an operating start and stop time; according to the basic information of each working condition point, the working time proportion of the water turbine unit at each working condition point is counted; the stress condition of the runner when the water turbine unit operates at each working condition point is obtained; according to the stress condition of the runner when the water turbine unit operates at each working condition point, fatigue life calculation is performed to obtain the life of the runner at each working condition point; the working time proportion of the water turbine unit at each working condition point and the life of the runner at each working condition point are weighted and averaged to obtain the service life of the runner, so that the maintenance time of the water turbine can be better controlled by the staff, frequent shutdown inspection is not needed, and the problems that in the related art, the water turbine runner condition is manually checked, manpower and financial resources are wasted, and the working efficiency of the water turbine is affected are solved.

Various devices, systems or models with adjustable operating parameters often have different optimal operating strategies at different stages of their operating life cycle. In the prior art, operating parameters are usually fixed by default or only adjusted passively according to real-time working conditions, and there is no technical solution for actively dividing development stages based on the cumulative amount of the object itself and adjusting operating parameters accordingly. Specifically, the prior art has the defects of lack of stage perception, parameter adjustment lag, strategy mismatch and lack of a universal framework. The present application provides a stage adaptive operation method, system and computer readable storage medium, aiming to enable the target object to actively identify the development stage it is currently in according to its own cumulative amount of operation, and adjust the operating parameters accordingly, to realize the dynamic matching of the operation strategy and the stage characteristics. It has the characteristics of whole life cycle optimization, forward-looking parameter planning, cross-domain universality, resource optimization configuration, individual operation and smooth transition.