38results about How to "Avoid destabilizing effects" patented technology

A system for improving the performance of a powered boat that includes both methods and apparatuses that provide a powered boat ways to stabilize, control, and optimize the powered boat's performance when the powered boat is in powered motion. The system provides capabilities of enhancing the powered boat's performance by responding to both aerodynamic and hydrodynamic effects upon the powered boat when the powered boat is in motion. Some embodiments of the system are capable of altering its way of responding to aerodynamic effects while the powered boat is in powered motion, other embodiments are capable of altering the powered boat's response to hydrodynamic effects while the powered boat is in powered motion, and still other embodiments are capable of altering the powered boat's response to both aerodynamic and hydrodynamic effects while the powered boat is in powered motion. Certain embodiments of the system are capable of utilizing aerodynamic elements that operate on the air stream flowing within a tunnel formed within a multihull of a powered boat, while other embodiments are capable of mitigating the effects of water impacts upon the roof of a tunnel formed within a multihull powered boat. Still other embodiments are capable of responding to aerodynamic effects by interacting with portions of the air stream that passes above the boat while mitigating the potential for negative effects due to cross-winds impacting the structure which rises above a deck of the powered boat.

The invention belongs to the technical field of cold storage and refrigeration, and particularly relates to a time-temperature indicator and a preparation method thereof. The time-temperature indictor comprises an indicator fixing plate and a sealing thin film, wherein a fixing clamping slot is formed in the other end of the indicator fixing plate, the end part of one end of the fixing clamping slot is close to a thin film liquid storage bag, a diffusion medium belt matched with the fixing clamping slot in length is fixed in the fixing clamping slot, a thorn sheet is embedded in one end, close to the thin film liquid storage bag, of the diffusion medium belt, and scale marks are marked on the front side of the indicator fixing plate. The time-temperature indicator can reflect the change of the quality of a frozen food and indicate the remaining shelf life of the frozen food, and the critical temperature is freely regulated within the scope of 0-12 DEG C, so that the scope of application of the indicator is greatly expanded.

The invention relates to a self-balancing sounding balloon and an air inflation method thereof. The self-balancing sounding balloon comprises a gasbag, a base, a pressure limiting mechanism, a pressure relief module and a guiding module, and the pressure limiting mechanism is arranged on the gasbag through the base; the pressure limiting mechanism comprises pressure relief shells and pressure relief pistons, and the closed ends of the pressure relief shells are communicated with the inner space of the gasbag; the opening ends of the pressure relief shells are provided with ring-shaped protrusions, and the pressure relief pistons are connected with the ring-shaped protrusions through extension springs; a plurality of through-holes B are formed on the axial middle wall of the pressure relief shells, and a plurality of pressure discharging holes are formed on a pressure discharging cavity; the pressure relief pistons are rotatably connected with connecting jaws, an air discharging nozzle is arranged at the bottom of the pressure discharging cavity, the air discharging nozzle comprises an air discharging piston rod, and the air discharging piston rod is flexibly connected with a fixing seat through a cardan shaft; the guiding module comprises cone-shaped guiding heads and stabilizing rings, the connecting jaws are rotatably connected with the stabilizing rings, the guiding heads are fixed on the stabilizing rings, and a plurality of guiding air plates with the quantity corresponding to the quantity of the connecting jaws are arranged on one side the guiding head, which backs onto the gasbag.

The invention relates to an automatic locking structure of an adjusting screw rod for a flow-adjustable metering pump. The metering pump comprises a driving end, a side cover, an adjusting screw rod and an adjusting handle, wherein the adjusting screw rod is located in the side cover and performs transmission with the side cover through threads, and the adjusting handle is connected with the adjusting screw rod; when the adjusting handle is rotated, the adjusting handle drives the adjusting screw rod to move, the eccentric distance is finally adjusted, and flow of the metering pump is adjusted; the automatic locking structure comprises a spring, a spring gland and a locking spring seat, the inner end of the locking spring seat is a locking end, the outer end of the locking spring seat is a free end, a guide rod used for sleeving the spring is arranged in the middle of the locking spring seat, a through slot is formed in the side cover, the locking spring seat penetrates through the through slot in the side cover, the locking end of the locking spring seat is clamped in the adjusting screw rod, the guide rod of the locking spring seat is sleeved with the spring, and the spring is located in the through slot, the spring gland is connected to an opening of the through slot and compresses the spring, and the free end extends out of the outer side of the spring gland. Compared with the prior art, the automatic locking structure is simple in arrangement, good in locking effect and convenient to adjust.

The invention relates to a method and system for controlling the opening degree of a steam turbine governing valve of a thermal power generating unit. A steam turbine is controlled according to throttle pressure, a throttle pressure set value, a primary frequency modulation instruction, a thermal power generating unit load value, a thermal power generating unit load set value, the feedforward component of an obtained steam turbine master control adjusting instruction, the integral operation component of the steam turbine master control adjusting instruction, the scaling operation component of the steam turbine master control adjusting instruction and the steam turbine pressure deviation operation component of the steam turbine master control adjusting instruction, the load deviation of the thermal power generating unit can be effectively reduced, and integral regulation is controlled; the stability of a CCS is achieved, proportional regulation can be effectively subjected to amplitude limiting, and system instability caused by too large deviation is avoided; and the load deviation of the thermal power generating unit is reduced, the throttle pressure can be stable, and disturbance of a boiler is reduced.

The invention discloses an automatic gain control method for a receiver, which comprises collecting signals output by attenuation units in links of various levels of the receiver respectively; performing detection processing and analog-to-digital conversion processing on the signals collected in links of various levels respectively , and send the processed signals in the links at all levels to the FPGA control unit respectively; the FPGA control unit obtains the attenuation control signals corresponding to the links at all levels respectively according to the processed signals in the links at all levels and the preset gain control table, And the attenuation control signals corresponding to the links of each level are respectively sent in parallel to the attenuation units in the links of each level; the attenuation units in the links of each level respectively perform gain control processing on the signals input to the attenuation unit according to the attenuation control signals. The method can parallelly control the attenuation units in the links at all levels, and the control confusion of the links at all levels will not occur; and the automatic gain control range of the signal in the receiver is greatly improved. The invention also discloses a receiver automatic gain control system.

The present invention relates to one kind of clathrate of chloramine phosphate and cyclodextrin or its derivative, its preparation process, pesticide composition including the clathrate of chloramine phosphate and cyclodextrin or its derivative, and the use of the clathrate of chloramine phosphate and cyclodextrin or its derivative as pesticide. The clathrate is heat stable, and the present invention solves the problem of unstability of chloramine phosphate as pesticide.