14results about How to "Accurate load" patented technology

The invention relates to the technical field of experiments, in particular to an experimental method and system for testing the torsional rigidity of an aircraft tire, and is used for testing the yaw torsional rigidity of the aircraft tire under various conditions. The aircraft tire is accelerated to the target rotating speed, and then the vertical load is applied to the aircraft tire through the first oil cylinder. And finally, controlling the second oil cylinder to perform yaw torsion control on the aircraft tire according to the yaw torsion angle curve. And yaw torsion moment is collected in the yaw torsion control process. And finally, the torsional rigidity of the aircraft tire can be calculated through the torsional moment and the yaw torsional angle. According to the invention, different deflection angles can be tested under the conditions of different rotating speeds and loads, so that the corresponding torsional rigidity is obtained. In addition, a dynamic real-time stiffness model calculation method is adopted to apply the load, so that the load control is more accurate, and the safety of the aircraft tire is ensured at the same time.

The utility model provides a leakage current automatic testing device of a proximity switch, and relates to the field of proximity switch testing. The tested device is connected with a power supply positive electrode and a power supply negative electrode of the power supply; and the testing device is connected with the switch output of the tested device and is connected with the power supply. The utility model provides an automatic leakage current testing device for a proximity switch, and solves the problem that a digital potentiometer cannot be directly used for replacing a power load resistor for testing.

The invention discloses a down clothes washing control method for a pulsator washing machine, and relates to the technical field of washing control, and the down clothes washing control method comprises the following steps: putting down clothes to be washed and a detergent into a washing machine barrel, covering a pressing plate, and sequentially selecting a down washing mode and one-key intelligent washing; entering an intelligent washing control process, calculating a target water level according to the weight of the down clothes to be washed, and performing staged water level control according to the target water level and a preset water level control algorithm; when the target water level is reached, the rotating speed of the impeller is controlled according to a preset impeller control algorithm, and down clothes are washed; after washing is completed, the rotating speed of the impeller is adjusted according to a preset dehydration control algorithm, and the dehydration process is executed. By intelligently adjusting the water level and the rotating speed of the impeller, the washing process of down clothes is accurately controlled, the water level, the rotating speed and load detection are optimized, the washing effect is improved, damage to the down clothes is effectively avoided, and washing uniformity and keeping of the shape of the clothes are ensured.

The present application discloses a variable frequency control system driven by a compressor, which relates to the field of variable frequency technology for air conditioners, and includes: a data acquisition module for collecting environmental parameters; a storage module for storing historical operating data; an optimization module for using a greedy algorithm to calculate the balance point between user comfort and system energy consumption, the balance point indicating the compressor operating frequency when the system energy consumption is the lowest while the system reaches the required cooling capacity or heating capacity for user comfort, the compressor operating frequency indicating the start-stop cycle of the compressor, and outputting the calculated compressor operating frequency to the control module; the control module uses a PID algorithm to adjust the compressor frequency according to the collected environmental parameters and historical operating data, and uses the compressor operating frequency obtained by the optimization module to adjust the calculated operating frequency. In view of the problem that it is difficult to balance the energy efficiency of the air conditioning system and the user comfort in the prior art, the present application realizes the balanced optimization of user comfort and system energy consumption.

The invention relates to the technical field of motor back electromotive force measuring equipment, and discloses motor back electromotive force detection equipment which comprises a rack, and a contrast motor assembly and a to-be-detected motor assembly are oppositely arranged on the rack. A clamping transmission assembly used for being connected with the contrast motor assembly and the motor assembly to be measured in a clamping mode is arranged between the contrast motor assembly and the motor assembly to be measured, and the clamping transmission assembly is connected with a load mechanism used for providing loads through belt transmission. The detection instrument module automatically controls the load adjusting mechanism to change the pressure on the load mechanism, the mature pressure tester monitors the pressure, the motor load during measurement can be accurately changed, automatic measurement is achieved through the detection instrument module, the tedious degree of manual operation is greatly reduced, and the working efficiency is improved. Through comparison of multiple groups of detection data, more accurate back electromotive force data of the to-be-detected motor can be obtained.

This utility model relates to a bearing vibration testing device applied in the field of testing equipment. In this solution, the clamping assembly drives the displacement bracket through an electric guide rail, so that the buffer joint flexibly contacts the outer ring of the bearing, achieving stable fixation while avoiding damage and preventing displacement from affecting the results during testing. The vibration probe is in close contact with the bearing, and the control terminal transmits and analyzes data in real time to ensure accurate testing. When not in operation, the flexible load assembly supports the iris structure to avoid interfering with assembly. Before testing, the flexible adaptable contact adjustment blade automatically adjusts to fit the bearing. During testing, it releases resistance to provide a stable load, accurately simulating actual force, allowing vibration testing to be carried out in an environment close to actual working conditions. The replaceable load assembly can quickly replace the weight ring through magnetic connection, flexibly adjusting the load to meet the needs of different scenarios, improving the authenticity and reliability of testing. The overall operation is simple and adaptable to the testing of various bearings.

The invention relates to the technical field of load power-off management, and discloses a load power-off management system and method based on battery capacity check and detection, and the management system comprises a power supply and a plurality of loads; the load power-off management system further comprises a charging and discharging module, a charging and discharging module monitoring unit, a load basic information unit, a plurality of load monitoring units and an analysis module. After the power supply is cut off, the charging and discharging module provides electric energy for each load; the charging and discharging module monitoring unit monitors the charging and discharging module and obtains and stores monitoring data of the charging and discharging module; monitoring corresponding loads through a plurality of load monitoring units, and obtaining and storing state information data of the loads; the monitoring data, the load priorities, the preset stop time and the state information data are analyzed through an analysis module, and whether the loads with the priorities are powered off or not is judged; it is ensured that the load with the preceding priority can continue to work until the preset stop time, and accurate power-off of the load is achieved.

The utility model belongs to the technical field of powder metallurgy bearing testing, and particularly relates to an automobile motor powder metallurgy bearing vertical friction performance testing device which comprises a bottom plate. A mounting through hole is formed in the center of the bottom plate, and a servo electric cylinder is arranged on one side of the top surface of the bottom plate; a telescopic shaft of the output end of the servo electric cylinder is connected with a push block. The other end of the push block is connected with a tension seat; a test part is arranged on the tension seat, the center of the tension seat is arranged at the mounting through hole of the bottom plate, a driving part is arranged at the lower part of the tension seat, and the driving part is used for cooperating with the test part to test the performance of the to-be-tested bearing together. According to the utility model, the testing component and the driving component are matched for use, so that different loads can be increased for testing according to testing requirements, the testing repeatability and accuracy are greatly improved, the testing is more time-saving and labor-saving, the time cost is reduced, and the product development efficiency is improved.

The application discloses a lower limb auxiliary driving mechanism and a robot, which comprises a thigh assembly and a lower leg assembly connected with the thigh assembly, and a connecting end of a thigh connecting piece two and the lower leg assembly forms a knee joint. In the application, a constant force load mechanism is arranged on the thigh assembly, constant tension of a spring is converted into a compensation torque acting on the knee joint, so that the compensation torque can directly offset part or all of the bending moment generated by the weight of the lower limb on the knee joint, thereby realizing accurate compensation of the static load of the knee joint, reducing the driving burden when the joint maintains a posture, and the constant force load spring serves as a parallel auxiliary execution mechanism and jointly bears the load of the knee joint with a motor driving system. Through the parallel sharing mode, the joint load originally borne by the motor can be reasonably distributed, the motor works in a relatively stable and high-efficiency interval more, peak load is reduced, current impact is reduced, and overall driving efficiency is improved.

This invention relates to the field of marble slab processing technology and discloses a marble slab fine trimming device, including a slab conveyor. Marble slabs are placed on the conveyor belt of the slab conveyor. A mounting frame is fixedly installed on one side of the slab conveyor. A fixing plate is fixedly installed on the inner side of the mounting frame. An adjustment mechanism is provided on the fixing plate. Four trimming mechanisms are provided inside the adjustment mechanism. The adjustment mechanism includes three sets of first hydraulic cylinders fixedly installed at one end of the mounting frame. A concave-convex plate is fixedly installed at one end of the telescopic rod of the three sets of first hydraulic cylinders. An upper mounting plate is fixedly installed at the upper end of the concave-convex plate. This marble slab fine trimming device, through its overall coordinated use, facilitates the replacement of different grinding wheels and irregularly shaped grinding wheels. It also adapts to the original switching structure, reducing tool costs and operational difficulty, and also achieves multi-functionality, improving equipment versatility and processing efficiency.

The utility model discloses an electric push rod offset durability testing device, which comprises a base, a guide post, a counterweight assembly, a limit assembly and an offset driving assembly, the guide post is arranged at the upper part of the base, the counterweight assembly is sleeved at the periphery of the guide post, the lower part of the counterweight assembly is provided with a pressure sensor and an upper fixing seat, and the limit assembly is arranged on the upper fixing seat. The limiting assembly is arranged on the upper portion of the guide column and used for limiting sliding of the counterweight assembly, the offset driving assembly is arranged on the upper portion of the base, and a lower fixing base is arranged on the upper portion of the offset driving assembly. According to the device, the deviation condition in an actual working environment can be realized, and long-time durability test can be performed on the electric push rod, so that the electric push rod can still keep good performance after being used for a long time.

The invention discloses a valve identification method and device based on a neural network, a medium and equipment. The method comprises the following steps: acquiring voltage data, current data, flow data and valve opening data in a continuous time period; inputting the voltage data, the current data and the flow data at each moment in the continuous time period into a pre-trained neural network model to obtain a load at each moment; obtaining a load curve based on the load at each moment and the valve opening data at each moment in the continuous time period; and respectively calculating the average loss of the load curve and the standard load curves of different types of valves, and outputting the type of the valve corresponding to the standard load curve when the average loss is minimum. The valve type can be recognized, manual checking of the valve type can be avoided, and the labor cost can be saved.

The invention discloses a low-altitude wireless access network resource scheduling method and system, and relates to the technical field of communication, and the method comprises the steps: determining a compression ratio set of a current time slot of any unmanned aerial vehicle through a compression ratio optimization-context multi-arm bandit algorithm; based on a historical node load sequence of the low-altitude wireless access network, a load prediction model based on mixed sampling and attention enhancement adaptive fusion is adopted to output a predicted node load sequence; determining a resource scheduling action set of the current time slot through a multi-agent model by taking a maximum service time delay reward and a load balancing reward as targets according to each compression ratio set and the predicted node load sequence; based on the scheme, through hierarchical cooperation of compression ratio optimization and load prediction, resource allocation of minimum average service delay and load balance is realized through a resource scheduling algorithm based on a multi-agent model, and network adaptability and service reliability in a low-altitude scene are improved.

The application provides a power balance determination method and device for an energy storage system, which comprises the following steps: determining the initial allocation power of each energy storage unit in the energy storage system according to a power initial allocation rule determined based on the size relationship between the target total power and the corresponding maximum allowed total power of the energy storage system; wherein the initial allocation power of the energy storage unit is the maximum allowed power of the energy storage unit or the consistency expected power calculated by considering the operating state parameters of each energy storage unit; when the initial allocation power is the consistency expected power, classifying each energy storage unit in the energy storage system to divide into over-limit energy storage units and surplus energy storage units; and performing power reallocation according to the power excess of the over-limit energy storage units and the receivable capacity of the surplus energy storage units to determine the target working power of each energy storage unit. In this way, the application realizes power balance control by pre-classifying over-limit and surplus storage units and completing global reallocation at one time.