30results about How to "Suppress overload" patented technology

According to this radiography device, by taking images in rapid succession while appropriately obtaining the timing for which an X-ray tube in a rest state should be activated, rapid successive imaging and protection of a radioactive source can both be achieved. That is, in the configuration of the present invention, a time difference is calculated, obtained by subtracting a temporal width of an activation period from a temporal width of an undetectable period, and the time after the time difference has elapsed from the time at which an X-ray is irradiated is determined as the timing for activating the X-ray tube. The temporal width of an undetectable period is the temporal width between the time at which an FPD detects an X-ray once and the time at which the following X-ray can be detected, and the temporal width of an activation period is the temporal width between the start of activation of the X-ray tube to the completion of activation. Thus, while simultaneously activating the X-ray tube and preparing the detector, images can be taken in rapid succession without excessive burden on the X-ray tube and the life of the X-ray tube can be extended.

An automated shift control device suppresses overload of the shift motor and reduces the time from beginning to completion of a gear shifting operation. A transmission has a plurality of pairs of speed change gears and a gear selecting mechanism. A shift motor drives the gear selecting mechanism. A shift power transmission mechanism transmits power from the shift motor to the gear selecting mechanism. A torque limiter has a third reduction gear and a third shaft forming a part of the shift power transmission mechanism. The torque limiter transmits power from the shift motor as torque. When the transmitted torque is not more than a predetermined limit torque, the third reduction gear co-rotates with the third shaft. When the transmitted torque exceeds the predetermined limit torque, the third reduction gear rotates relative to the third shaft to limit the transmitted torque to the predetermined limit torque or less.

The invention provides a converter overload protection method by a flexible DC transmission bipolar system. For an island passive system connected to the new energy access, alternating current sides of a bipolar converter are respectively connected to respective alternating current buses, bus connection switch devices are used for connection between the alternating current buses, the converter isin bipolar operation, it is determined what the bipolar power is larger than the maximum power of one pole of the converter, the bus connection switches are controlled to be an opening position, whenthe bipolar power is smaller than the maximum power of one pole of the converter, the bus connection switches are controlled to be a closing position so as to avoid the problem that faults of one poleof the bipolar system cause overload of the other pole of the converter to generate off-stream. The method for inhibiting the overload of the converter is simple and practical, and high in reliability, can pass the send-out power of the other pole to the maximum extent when the faults of the pole converter are generated, can avoid the overload off-stream of the non-fault pole and can optimally ensure the effective send-out of the new energy.

A hybrid type working machine having a supercharger, in which overload to the engine is suppressed. The hybrid type working machine (1) comprises an engine (11); a supercharger (42); a motor generator (12) that generates electricity with the driving force of the engine (11), as well as assist the driving force of the engine (11) with the driving force of itself; an inverter circuit (18A) connected to the motor generator (12); and a nonvolatile memory (31) that stores the correlation between the rotating speed of the engine (11) and the boosting pressure of the supercharger (42), and the upper limit value for the output of the engine (11); and is also provided with a controller (30) that drives the inverter circuit (18A). The controller (30) controls the inverter circuit (18A) so as to have the motor generator (12) assist the driving force when the necessary output exceeds the upper limit value for the output, based on the correlation stored in the nonvolatile memory (31).

The invention discloses a V2V (Vehicle to Vehicle)-based collaborative city road congestion detecting method. According to the V2V-based collaborative city road congestion detecting method disclosed by the invention, a vehicle running velocity v and the traffic flow density rho are used as influence factors of a traffic congestion level and are input in a fuzzy controller, so that a local traffic congestion level is obtained; when a vehicle O detects that traffic congestion happens, a congestion judgment process can be started, i.e., when the vehicle O in congestion sends a congestion query message to a vehicle in a neighbor table is detected, the vehicle in the neighbor table replies a congestion verification message to the vehicle O according to a congestion judgment result; when the traffic congestion is not detected, only position information can be mutually sent between vehicles, so that network overload can be effectively inhibited; through a mechanism that traffic congestion detection is completed through cooperation of the vehicle O and the vehicle in the neighbor table, the accuracy of detecting the traffic congestion by the vehicle is remarkably increased; traffic congestion level values output by the fuzzy controller are continuous values, the grade of the traffic congestion is accurately reflected, and the vehicle O is capable of calculating a congestion zone and the congestion length according to the position information.

The invention discloses a multi-end coordination control and protection system for flexible direct-current power grids. The multi-end coordination control and protection system has the advantages thata multi-end coordination control device, pole control devices, pole protection devices, bus protection devices, line protection devices, a direct-current station control device, an alternating-current station control device, a grounding resistance monitoring device, a conversion transformation protection device, an alternating-current energy dissipation device and a safety and stability control device in the multi-end coordination control and protection system are connected with control bus, and accordingly data can be shared among the multi-end coordination control device, the pole control devices, the pole protection devices, the bus protection devices, the line protection devices, the direct-current station control device, the alternating-current station control device, the grounding resistance monitoring device, the conversion transformation protection device, the alternating-current energy dissipation device and the safety and stability control device; voltages and power of the integral grids can be controlled by the multi-end coordination control and protection system, equipment such as bus, direct-current lines and conversion transformation equipment can be protected in real time, short-time absorbed transient energy can be inputted by the alternating-current energy dissipation device when new energy cannot be outwardly delivered due to island delivery-end single-pole locking or receiving-end converter station faults in the flexible direct-current power grids, then generator tripping can be carried out on the new energy by means of safety control, and accordingly the problems of overload, power surplus and the like of power grids due to the fact that existing new energy cannot be outwardly delivered when the existing flexible direct-current power grids are in island operation modes can be effectively solved by the aid of the multi-end coordination control and protection system.

The present invention relates to a vacuum cleaner with preseparation structure. Said vacuum cleaner includes vacuum cleaner main body, and is characterized by that in the interior of shell body of said main body are successively set a motor, a fan and a filter from gas inlet. A disk supporting seat is used for supporting said fan in the interior of said shell body, the internal space of said shell body is divided into two portions in the transverse direction, one end where the meter is mounted is air-intake channel, and one end where the filter is mounted is duct-collecting chamber, the left and right two sides of the described supporting seat are equipped with air inlet respetively, on the air inlet a non-return valve is set respectively.

A hybrid-type working machine 1 includes an engine 11; a supercharger 42; an electric generator 12 that performs electricity generation by the driving force of the engine 11 and assists the driving force of the engine 11 through its own driving force; an inverter circuit 18A that is connected to an electric terminal of the electric generator 12; and a controller 30 which includes a nonvolatile memory 31 that stores first information indicating a correlation between the revolutions of the engine 11, the boost pressure of the supercharger 42 and an output upper limit value of the engine 11, and drives the inverter circuit 18A. The controller 30 controls the inverter circuit 18A so that the electric generator 12 assists the driving force when the required output exceeds the output upper limit value, based on a correlation stored in the nonvolatile memory 31.

The present invention relates to a vacuum cleaner with vibration cleaning device. Said vacuum cleaner includes bag filter, said filter is formed from filter bag and skeleton for opening said filter bag. It is characterized by that the bag mouth fastener cover of said filter bag is parallelly-connected with inlet of fan, and said skeleton is placed in the filter bag, and is supported or drawn by an elastic element so as to can make the filter bag be retained in open state, and a vibrator is fixed on the skeleton.

The object of the present invention is to provide a driving device for an observation light switching mechanism capable of suppressing the overload of the driving motor and realizing miniaturization. Therefore, the driving device of the present invention has: a filter part (42), which is configured to generate The optical filter (32) of the light of wavelength characteristic, this filter part (42) can dispose the optical filter at the first position and the second position different from the first position; Convex part (42x), it is arranged on On the filter part; the transmission part (43), which has a first groove part (43d) for the convex part to contact, and the transmission part (43) rotates the convex part along the predetermined rotation axis (41d) Move along the first groove, so that the optical filter moves from the first position to the second position; and the second groove (43e), which is arranged on the transfer part, moves along the optical filter to the second position The tangential direction of the convex part centered on the rotation axis of the transmission part in the state is set.

The invention proposes a method for suppressing the overload of the converter in a flexible direct current transmission bipolar system. For connecting to an island passive system such as new energy access, the two poles of the AC side of the bipolar converter are respectively connected to an independent AC busbar. The two-pole busbar adopts electronic switchgear as the bus-tie switch. The inverter operates with two poles, and the bus-tie electronic switch is connected. When one pole is blocked, monitor when the power of the two poles is greater than the maximum power limit of the one-pole converter, and disconnect the bus. When the bipolar power is less than the maximum power limit of one pole, the electronic switch is kept on. In addition, in view of the failure of the DC line of the sending-end converter to the receiving-end converter, an energy dissipation resistance device connected by an electronic switch is added to the positive and negative DC busbars, and the electronic switch is turned on when the DC overvoltage is detected. Energy dissipating resistor device to suppress overvoltage of the converter.

The present invention provides a combine harvester which can be used for realizing high-effective harvesting works, and preventing blocking of a grain rod caused by load applied on a harvesting device and a threshing device. A tail end part of a left side grass-dividing part (14L) of a left side part of the harvesting device (4) and a tail end of a right side grass-dividing part (14R) of a right side part of the harvesting device (4) are respectively and freely moved toward the right and left directions, thus two rows of grain rods are guided to a part between the left side grass-dividing part (14L) and the right side grass-dividing part (14R) when the tail end part of the left side grass-dividing part (14L) and the tail end part of the right side grass-dividing part (14R) are moved toward the mutually close direction and mutual space is shortened, and four rows of grain rods are guided to a part between the left side grass-dividing part (14L) and the right side grass-dividing part (14R) when the tail end part of the left side grass-dividing part (14L) and the tail end part of the right side grass-dividing part (14R) are moved toward the mutually separating direction and mutual space is enlarged.

The system has a door station (1) and housing stations (2-5) that are connected to a bus (8). A power supply unit (6) is connected to the bus, for supplying power to the stations. A power coordinator (7) is provided for managing the power consumption of the stations. The maximum power rating of power supply unit is communicated with the stations. The future energy requirement of the stations is inquired by the power coordinator. The required energy is provided based on energy consumption information of stations and maximum permissible energy of power supply unit.

Disclosed is a method for providing a communication service based on a push, which may include: when an application loaded on a client is executed, requesting a communication service based on the push keys to an account server; receiving push keys of multiple target clients from the account server; requesting a push server to transfer the push keys of the client and a service request for a predetermined service to at least some of the multiple target clients; and when communication connection with a target client which responds to the service request is performed based on the push keys, performing the predetermined service.

A disc drive apparatus includes a main frame having sidewalls and first and second guides disposed on the sidewalls and opposed to each other, a recording medium holder configured to hold a disc recording medium, a medium drive section, and an ascent / descent retaining member which supports the medium drive section and is attached to the main frame for ascent and descent. The retaining member includes a pair of arm portions, a connecting portion which connects respective one-end portions of the arm portions, pivotal portions arranged on the respective other end portions of the arm portions and supported on the sidewalls, and first and second engaging portions disposed on the respective one-end portions of the arm portions for engagement with the first and second guides, respectively. The first guide is formed of a leaf spring and configured to urge the retaining member toward the second guide.

The present invention provides an automatic transmission control apparatus, a power unit and a Straddle-Type Vehicle. The automatic transmission control apparatus can shorten the time from starting to finishing a shift motion and suppresses overload applied to a shift actuator. The automatic transmission control apparatus is provided with a transmission apparatus, which has a plurality of shift gear pairs with different transmission gear ratios, and a gear selecting mechanism that selects a shift gear pair transmitting power; a shift motor, which drives the gear selecting mechanism; a shift power transmission mechanism, which transmits power of the motor to the gear selecting mechanism. Furthermore, the automatic transmission control apparatus is provided with a mechanical fuse within theshift power transmission mechanism, which generates an irreversible state change such that the transmission power becomes equal to or less than a predetermined value if the transmission power exceedsthe predetermined value.

The present invention proposes an overload protection method for converters in bipolar systems of flexible direct current transmission. For isolated island passive systems connected to new energy sources, the AC sides of the bipolar converters are respectively connected to their respective AC buses. Increase the connection of bus tie switch equipment between the two poles, and the bipolar operation of the converter. It is judged that when the bipolar power is greater than the maximum power of the one pole converter, the bus tie switch is controlled to be divided. When the bipolar power is less than the maximum power of one pole, Control the bus tie switch to close, so as to avoid the failure of one pole of the bipolar system, which will cause the other pole to be overloaded and stop the operation. The method of suppressing the overload of the inverter is simple, practical, and highly reliable. When one pole fails, the power can be sent through the other pole to the maximum extent, avoiding the overload shutdown of the non-faulty pole, and optimally ensuring the effective delivery of new energy.

A work vehicle includes a travel device and a work implement. A control system for the work vehicle includes a controller. The controller controls the work implement according to a predetermined target value. The controller determines whether a slip of the travel device has occurred during control of the work implement. The controller changes the target value according to a result of determination of the slip.