35results about How to "Reduce risk of overload" patented technology

Cell selection techniques for use in cellular communications systems are disclosed. A decision as to whether to use a cell for data transmission is made in dependence on a measure of a congestion level in the cell. The decision may either be part of a cell selection decision, or used to override a cell selection decision. The techniques may be used in fast cell site selection.

The invention relates to a washing apparatus (100) for washing and dewatering of cellulosic pulp, comprising a rotary drum (10) with outer compartments (12) on the drum for the pulp to be washed. The compartments are defined by axial compartment walls (12b) distributed along the perimeter of the drum, a stationary casing (20) surrounding the drum. An annular space (30) is defined between the casing and the drum and wherein the annular space is divided into zones (F, T1, T2, U) by longitudinal seals (40) for formation, washing and output of the pulp. The function of the seals is optimized by devices (60) for force measurement of forces acting on at least one seal with measuring means for measurement of a biasing force of a spring package in the device (60) and measurement of a force acting on a load transmission shaft (40A) of the unit, and extraction means (62) for extraction of a force acting against the seal in a direction away from the drum.

The invention provides an aircraft arresting device, which relates to the technical field of flight braking device, comprising an arresting vehicle and a compound net body. Two arresting vehicles arerespectively connected with the two arresting vehicles through a compound net body, and the arresting vehicle is fixed with the runway; An energy absorber is arranged inside the arresting vehicle, andthe arresting vehicle is used for providing damping to the composite net body through the energy absorber so as to form the safety protective barrier of the aircraft through the composite net body; the vehicle is blocked to achieve the absorption of kinetic energy of the aircraft, so as to achieve the stopping of the aircraft; The invention alleviates the technical problems of complex structure and inconvenient use of the friction disc brake existing in the prior art. It has the technical characteristics of safety, reliability, simple operation, easy maintenance, low maintenance cost and longservice life. Through the energy absorber braking, the brake can be gentle and smooth, and the risk of aircraft overload can be reduced.

The invention relates to the field of dual-motor system control, and provides a dual-motor gear transmission system torque equalization control method so as to realize effective inhibition for output torque imbalance and control dual-synchronization in rotating speed and torque of the system. The invention adopts the following technical scheme: the dual-motor gear transmission system torque equalization control method comprises the steps of (1) a structural model of the system; (2) torque synchronization error calculation, wherein Te1 and Te2 are supposed to be electromagnetic torques of a motor 1 and a motor 2 respectively, a torque synchronization error of the system is defined as E(s)=Te1(s)-Te2(s), E serves as a feedback variable and acts on a synchronization controller, and the size of E reflects the performance of system torque equalization control; and (3) synchronization controller design. The method provided by the invention mainly applied to dual-motor control occasions.

The invention discloses a regulating method for a speed regulator mechanical open limit of a generation set. The method comprises the following steps of setting the speed regulator mechanical open limit value corresponding to a connected-grid initial load value after the generation set is connected to a grid, and enabling the speed regulator mechanical open limit value to be maintained in a scope of 63 percent of a mechanical open limit full open value; and when the generation of the set reaches a stable state, corresponding regulation is carried out on the speed regulator mechanical open limit through a monitoring system according to different up and down reservoir water level differences. According to the technical scheme, the speed regulator mechanical open limit is intelligently controlled by the monitoring system according to the change of an operating head, on the premise of a full load, the opening degree of guide blades is enabled to be in a controlled margin scope of the speed regulator mechanical open limit all the time when under regulation of different heads, so that the reduction on risk of an overload is realized, and the reliability of device operation is improved.

The invention relates to a bending press (1) for bending workpieces (14), comprising: an upper tool (2) and a lower tool (3); a tool holder (4) in which the upper tool (2) is mounted ), and a tool holder (5) in which the lower tool (3) is mounted, wherein the upper tool (2) and the lower tool (3) can be fixed in different positions within the respective tool holder (4, 5) ; a control device (13) for controlling the bending press (1); a sensing device (8), which is connected to the control device (13); The workpiece is positioned inside the machine (1), wherein the stop gauge (6) can be moved relative to the tool (2, 3) by means of a drive device (9) actuated by a control device (13). The sensing device (8) is configured for contactless detection of the position of the upper tool (2) and the lower tool (3) inside the bending press (1), and the control device (13) is configured to interact with The positions of the upper tool ( 2 ) and the lower tool ( 3 ) detected by the sensor device ( 8 ) are adapted to the movement sequence for positioning the stop gauge ( 6 ) relative to the tools ( 2 , 3 ).

When a radio station terminates a first service on a first radio frequency channel and selects a second radio frequency channel for engaging in a second service, a time delay is inserted after the termination of the first service and before selecting the second radio frequency channel or before engaging in the second service. The time delay is dependent on the state of the radio station and / or a characteristic of the second service.

The invention provides an application server cluster monitoring system and monitoring method, and the system comprises an application server cluster which comprises a plurality of application servers;a load balancer which is used for acquiring application request data sent by the client and selecting a plurality of application servers from the application server cluster according to the application request data to serve as selected application servers; a monitoring module which is used for sending a service request to the selected application server at regular time, monitoring a request processing state of the selected application server in real time and obtaining a monitoring result; and an alarm module which is used for alarming abnormal information in the monitoring result acquired bythe monitoring module. According to the monitoring system of the application server cluster, all the application servers are prevented from being monitored, under the condition that the total monitoring duration is not changed, the monitoring duration of each selected application server can be prolonged, the monitoring sensitivity can be improved, and then the performance and stability of the application servers are improved.

The invention provides a stability control method suitable for a multi-level (two-level and more than two-level) electromagnetic looped network of an intertripping main transformer, belonging to the field of power grid stability and control. According to the stability control method, a concept of transfer ratio is introduced to calculate whether overloads occur in grid components at different surrounding levels or not and the power flow reduction degree of each component after a strategy is adopted in different initial running modes respectively by adopting or not adopting a stability control strategy after a fault occurs in a certain power transmission channel in the multi-level electromagnetic looped network; and finally, the transient stability of the power transmission channel fault after the stability control strategy is adopted is verified, and if the overload occurs in the grid component, a concept of machine set sensitivity after the fault is introduced to correct power-on combination and machine set output so that the stability control strategy is effective and available. By the stability control method, power loss of the power grid can be prevented, load loss of the power grid also can be prevented, and the problem that power flow overload in grid circuits at upper and lower levels can be easily generated due to heavy through power flow in the multi-level electromagnetic looped network can be solved.