40results about How to "Solve job instability" patented technology

The invention provides an amplitude limiting control circuit and method. The circuit comprises a resonance coil, a resonance capacitor, a switch and an inductor. The inductor is connected with the resonance coil in series after being connected with the switch in parallel to obtain a first circuit, and the first circuit is connected with the resonance capacitor in parallel or in series. When stable voltage needs to be provided, the switch is controlled to be switched on, the inductor is short-circuited, inductance of the circuit is changed, and the resonance state is further changed, stable voltage or current can be provided, and the problem that a driven resonance ring is instable in work is solved.

The invention discloses a multiple sources water heating system of integrated heat pump for heat collecting / energy storing / evaporating, which comprises a compressor, a water-cooled condenser, a heat collector / an energy accumulator / an evaporator, an air-source evaporator, a water pump and a water tank, wherein the heat collector / the energy accumulator / the evaporator is in parallel connection with the air-source evaporator, and in series connection with a refrigerant pipe of the compressor and the water cooled condenser to form a closed loop circuit, and the water-cooled condenser is in series connection with the water pump and the water tank via the water pipe to form a closed loop circuit. The heat collector, the energy accumulator and the evaporator that unify the system which is capable of removing the intermediate part of heat transfer. The system is capable of storing solar energy via latent heat from solid-liquid phase heat transfer to enable the water heater to work all-weather in high efficiency, and resolving problem of instability of system work due to intermittency of the solar energy. Using the solar energy as a low temperature heat source for heat pump to produce hot water is a breakthrough of the mode of heating directly of traditional water heater, further can overcome the defect of low operating efficiency of the heat pump in winter, thereby all-weather providing hot water for life steadily.

The invention provides an amplitude limit control circuit and method. The circuit comprises a resonant coil, a resonant capacitor and a voltage controlled switch; the resonant coil is connected with the resonant capacitor in series; and two switching ends of the voltage controlled switch are connected with two end points of the resonant capacitor respectively. When a stable voltage needs to be provided, the voltage controlled switch is switched on, and the resonant capacitor is shorted. The resonant state of an original circuit is changed, stable voltage or current can be provided, and the problem that a driven resonant ring is instable in work is solved.

The invention relates to trapezoidal slow wave lines of a coupling slot for a traveling wave tube. Multiple groups of rectangular metal plates are periodically arranged along the axial direction of an electron beam passage of the traveling wave tube; the rectangular metal plates are vertical to the axial direction; the centers of the rectangular metal plates are provided with round holes, and thetwo ends of narrow sides of the rectangular metal plates are provided with rectangular coupling slots; the rectangular metal plates are coated by axially extending metal shielding shells of which theinsides have rectangular shapes matched with the sizes of the rectangular metal plates. The trapezoidal slow wave lines are characterized in that: at least one photonic crystal bar which extends along the axial direction of the electronic beam passage is arranged in the rectangular coupling slots. The trapezoidal slow wave lines have the advantage of overcoming the defects of narrow bandwidth andunstable higher-mode work existing in the conventional trapezoidal slow wave lines of the coupling slot.

The invention provides an amplitude limiting control circuit and a method thereof. The circuit comprises a resonance coil, a resonant capacitor, a switch and a transformer. The resonance coil and the resonant capacitor are connected in parallel or are connected in series. A primary coil of the transformer is connected in parallel with the resonance coil. A secondary coil of the transformer is connected in parallel with the switch. When a stable voltage needs to be provided, the switch is controlled to be conducted. Meanwhile, the secondary coil of the transformer is in a short circuit state, an inductance of the primary coil of the transformer is decreased and a total inductance amount of the whole circuit is reduced so that a resonant state is changed. The stable voltage or current can be provided and a problem that a driven resonance ring works unstably is solved.

The invention discloses a full-hydraulic drive open-type double-main-shaft numerical control underwater stitch welding equipment which comprises two sets of positioning and clamping mechanisms which are bilaterally symmetrically arranged; a movable supporting frame in sliding connection with the two sets of positioning and clamping mechanisms in the peripheral direction is arranged across the two sets of positioning and clamping mechanisms; a set of peripheral moving mechanism connected with the movable supporting frame is arranged between the two sets of positioning and clamping mechanisms; a cantilever beam in sliding connection with the movable supporting frame in the X-axis direction is arranged on the movable supporting frame; an auxiliary supporting frame is fixedly connected to the lower part of the cantilever end of the cantilever beam; the auxiliary supporting frame sleeves a pipe-like object to be welded in a hollow manner; the cantilever beam is driven an X-axis moving mechanism; the X-axis moving mechanism is mounted on the movable supporting frame; a B-axis swinging oil cylinder perpendicular to the X axis is mounted on the outer side of the cantilever end of the cantilever beam; the B-axis swinging oil cylinder drives a Z-direction main shaft head vertical to the B-axis swinging oil cylinder to swing. The equipment has the outstanding characteristics that the repairing range is large, the operation of main shafts is stable, the driving is precise and reliable, and the positioning and clamping mechanisms are excellent in adaptability.

The invention discloses a full-hydraulic pressure drive closing type dual-main shaft numerical control underwater friction welding device, and the full-hydraulic pressure drive closing type dual-main shaft numerical control underwater friction welding device comprises two sets of location clamping mechanisms being symmetrically formed at the left side and right side, a mobile supporting shelf is formed on the two sets of location clamping mechanisms for glidingly connecting to the same along circumference direction, a circumference direction moving mechanism connected to the mobile supporting shelf is formed at the outer side of each set of location clamping mechanism, the mobile supporting shelf is provided with a main shaft shelf glidingly connected to the same along axial direction, the main shaft shelf is driven by the axial direction moving mechanism, which is installed on the mobile supporting shelf, a low speed main shaft head and a high speed main shaft head formed along the vertical direction are mounted on the main shaft shelf. The full-hydraulic pressure drive closing type dual-main shaft numerical control underwater friction welding device is strong in rigidity, the main shaft can work stably, the drive is exact and reliable, and the locating and clamping mechanism adaptability is good.

The invention discloses a specific dispatching communicating terminal and signal transmitting method, which comprises the following parts: receiving part, sending part, power mode between switchboard and specific dispatching communicating terminal, wherein the voltage of switchboard is changed by the power mode of DC, which supplies power for specific dispatching communicating terminal. The signal transmitting method comprises the following steps: a. affirming main program; b. interrupting sub-program; c scanning keyboard and sub-program of keyboard service; d. sending the sub-program.

The invention relates to a fuel gas spray gun for a fuel non-reversing heat accumulation type combustor. The fuel gas spray gun comprises a spray gun body. An ignition fuel gas channel, an ignition combustion supporting air channel, a main fuel gas channel and a combustion supporting air channel are arranged in the spray gun body in sequence from inside to outside. The front end in the main fuel gas channel and the front end in the combustion supporting air channel are each provided with a contracted-expanded tube. A combustion stabilization hole plate is arranged in the combustion supporting air channel, provided with a premixed fuel hole and further provided with a flame detection electronic eye. The fuel gas spray gun for the fuel non-reversing heat accumulation type combustor has the advantages of being simple in structure and good in flame rigidity, saving fuel, being capable of achieving real-time monitoring and the like. The problem that a flame detection electronic eye cannot work stably due to the fact that an existing spray gun is poor in flame rigidity, flame lifting is caused and flame swings left and right is solved.

The invention relates to an intelligent power module which comprises a heat dissipation substrate, an insulating layer, a circuit wiring layer, electronic elements, a plurality of pins, a sealing layer and a heat insulation layer, wherein the electronic elements comprise a power device and a driving chip. The heat insulation layer is further arranged between the driving chip and the circuit wiring layer, and the heat conductivity coefficient of the heat insulation layer is lower than that of the insulating layer. Therefore, the heat dissipation substrate can be well prevented from transmitting heat from the power device, the temperature of the driving chip is effectively reduced, the working temperature of the driving chip can be maintained near the room temperature, the problem that a semiconductor element works unstably due to the fact that the temperature of the driving chip is too high is well solved, and thus, the working reliability and stability of the IPM are improved.

The invention provides an amplitude-limiting control circuit and a method. The amplitude-limiting control circuit comprises a resonance coil, a resonance capacitor, a switch and a transformer, wherein a primary coil of the transformer is serially connected with the switch; the resonance coil is serially connected with the primary coil of the transformer to form a first circuit; the first circuit is connected with the resonance capacitor in parallel or series. When the stable voltage needs to be provided, the switch is controlled to be conducted; the primary coil of the transformer is short-circuited, the inductance amount of the primary coil of the transformer is reduced, the inductance amount of the circuit is changed, and the resonance state can be changed. The amplitude-limiting control circuit has the advantages that the stable voltage or current can be provided, and the problem of instable working of driven resonance ring is solved.