35results about How to "Fully excited" patented technology

The invention relates to an all-digital energy-adjustable spark light source, and belongs to the technical field of spectrum analysis. The spark light source comprises an excitation control system, a spark energy-adjustable power supply circuit, a high-voltage ignition circuit, an argon control circuit, a control system and a USB interface control circuit. A computer transmits to an interface circuit through a USB interface by using control software; the interface circuit is connected with an excitation control circuit; and the excitation control system transmits control pulses to control themagnitude of the voltage of the spark power supply circuit so as to control the magnitude of the energy of spark discharge. In the excitation, an analytical gap is ionized by the high-voltage ignition circuit at first, and then the spark power supply circuit performs the spark discharge; in the excitation, the excitation control system controls the switching on and the switching off of argon simultaneously; and signals sampled in the excitation are transmitted to the computer through the USB interface. The all-digital energy-adjustable spark light source has the advantages that: the excitation discharge frequency and the spark discharge energy can be set continuously on the software to facilitate analyzing chemical compositions of materials with different properties; and excitation control signals are transmitted through optical fibers, so the anti-interference capacity is strong.

The invention provides a special vibration testing device for a thermal field emission electron gun, in particular to vibrating a thermal field emission electron gun to be tested and measuring the tiny vibration displacements of different parts of the electron gun relative to excitation positions, and belongs to the field of testing equipment. The device includes a laser vibrometer, an adjustment seat for a vibrometer, a vibration isolation platform, a specimen clamping assembly, a vibrator body, a fixed table, a clamping-loading mechanism, a frame beam, a guide rail bracket, a frame brace, Diagonal support, loading rod, loading platen, loading hanger, guide rail slider module, vacuum chamber cover, terminals, vacuum chamber, observation window, specimen clamping sleeve, vacuum pipe interface. The present invention also provides a special vibration test method for a thermal field emission electron gun based on the above-mentioned device, which extracts vibration information from the test results of the test piece and the test piece holding sleeve through simple data processing, and cooperates with the above-mentioned device to make The test results are closer to the actual working conditions of thermal field emission electron guns.

The invention discloses a hybrid radial conical magnetic bearing switch reluctance machine and a control method. The machine comprises a switch reluctance machine, two radial magnetic bearings and two conical magnetic bearings, wherein one of the radial magnetic bearings and one of the conical magnetic bearings are arranged at one side of the switch reluctance machine, the other two bearings are arranged at the other side of the switch reluctance machine, bias windings of four magnetic bearings are connected in series with a winding of the switch reluctance machine to form an m-phase torque winding, torque control is the same as a traditional control mode of the switch reluctance machine, five directional suspension forces are only related to a current of the m-phase torque winding and a current of each directional suspension winding, the suspension forces are decoupled to one another, and the torque and the suspension forces can be in decoupling control. The machine and the control machine are high in integration, a few in control variable and simple in suspension control, and a suspension system power converter is low in cost.

The invention discloses waterproof, heat-resistant and low-illumination yellow green luminous powder and a production method thereof, so that salts or oxides of strontium, aluminum, europium, dysprosium and boron are fully mixed, and the problem that a traditional solid mixture cannot be easily mechanically mixed evenly is overcome. Fully dispersed mixtures are subjected to solid-phase reaction in a kiln with a reducing atmosphere at 1350-1450 DEG C for three hours; the generated fluorescent block material is subjected to mechanical machining such as crushing, ball-milling and sieving to form powder with one particle size; the powder is treated by inorganic acid; the particle surface is smooth; a transparent film of a molecular layer wraps the surface of a tiny particle with a special solvent; the film coating is capable of isolating water vapor from oxygen, has good waterproof property, moisture resistance and oxidation resistance; due to the light reflection of the transparent film, the brightness is improved; and the light-absorbing energy level is lowered.

The invention provides a radio-frequency electrodeless ultraviolet light source, which includes a high-frequency generator and a light source. The light source includes a glass bulb, a hollow tubular stem located in the middle of the glass bulb, and a spiral tightly wound on the outer wall of the tubular stem. Transmitting coil; the tubular core column is an inner cavity with two ends through, and one end of the transmitting coil is the coil lead-out line; the high-frequency generator is connected to the coil lead-out line through a coaxial cable; the inner wall of the glass bulb is equipped with a metal shielding grid layer, A phosphor layer is sprayed on the metal shielding grid layer; the high-frequency generator includes a metal casing, a socket, a planar transformer and power devices, and the inner wall of the metal casing is equipped with a wave-absorbing material; the glass bulb is filled with argon. It has the characteristics of high luminous efficiency, low heat generation, good heat dissipation, long life, EMC index in line with national testing standards, low development and production costs, etc. It is a high-power ultraviolet light source with excellent performance.

The invention discloses a four-degree-of-freedom composite structure bearingless switch reluctance machine and a controlling method thereof. The motor is composed of a switch reluctance machine and two radial magnetic bearings. Each magnetic bearing stator is formed by four E-type structures; one suspension winding and one armature winding wind around a middle tooth of each E-type structure; and one bias winding and one armature winding wind around two tooth windings. One armature winding winds around each tooth of the switch reluctance machine and crosses over the two magnetic bearing stators and a switch reluctance machine stator. An A-phase armature winding forms one phase; and B-phase and C-phase armature windings and bias windings are connected in series to form another two phases. A torque controlling way is identical with a traditional switch reluctance machine controlling way. The suspension force at a certain direction of each magnetic bearing is only related with a three-phase armature winding current and a suspension current at the direction; and the torque and the suspension force as well as the torque and the radial suspension force is in decoupling controlling. The suspension controlling becomes simple; and the outputs of the suspension forces are balanced and symmetric.