Power amplifier applies in the test in electromagnetism bearing system
[introduction] electromagnetism bearing is to use the electromagnetism force that can accuse not to have rotor the component of a kind of bearing that osculatory ground in suspension rises, in high speed domain of instrument of a favourable turn coming back is having wide application, in electromagnetism bearing system, the electric magnetic force that power amplifier provides corresponding control electric current to need in order to produce place to electro-magnet coil, have main effect to systematic character.
Electromagnetism bearing is to use the electric magnetic force that can accuse not to have rotor the component of a kind of bearing that osculatory ground in suspension rises, in high speed domain of instrument of a favourable turn coming back is having wide application, in electromagnetism bearing system, the electric magnetic force that power amplifier provides corresponding control electric current to need in order to produce place to electro-magnet coil, have main effect to systematic character.
In electromagnetism bearing system, the control signal that the action of power amplifier is a controller output changes the big electricity that needs for electro-magnet place, provide power for rotor of electromagnetism bearing in suspension thereby. The ATA3090 power amplifier that Aigtek company rolls out, frequency limits enclothes DC-100KHz, output electric current amounts to 18A, 0~30 of voltage gain numerical control times adjustable, particular branch is coarse adjustment (1step) with thin tone (0.1 Step) two kinds.
Electromagnetism bearing system is by electromagnetism bearing noumenon / of displacement sensor, controller and power amplifier composition. Displacement sensor detects by the positional position of suspension rotor, give controller positional information feedback, controller generates corresponding control signal according to different control pattern, will control signal changeover to perhaps control electric current to control voltage through power amplifier next, action produces the electric magnetic force that suspension rotor place requires at electromagnetism bearing coil, make rotor obtains stable in suspension.
Power amplifier is the crucial one part in electromagnetism bearing system, the main loss of electromagnetism bearing system arises by power amplifier, and frequency of job of electronic bearing requirement from 0 to thousands of hertz, ATA-3090 is an ideal can magnify hand in, the power amplifier of dc signal. Power of 810Wp of the biggest output, output voltaic 18A, can drive power load. Liquid crystal screen shows, one key saves commonly used setting, offerred convenient and concise operation to choose, can use with the signal generator form a complete set of the mainstream, realize the perfect enlarge of signal. Provide the big electricity that electro-magnet needs, high-power.
The objective graph of ATA-3090 power amplifier reachs performance data
Power amplifier can be used at load of sensibility of drive capacitance sex, report, press coil of electric pottery and porcelain, magnetic field, supersonic transducer, usually, if use drive of alternating current source to contain the load of capacitor or inductance coil, can bring about the converse electric current that comes from laden a side. Below such circumstance, with normally the sentence of power source is possible cannot drive. But if use power amplifier to come drive, the tall voltage of need, big electric current also can come true. So, to pressing electric component and inductance coil in that way capacitance sex · inductance sex is laden, also can move steadily (output) .
Xi’an brings limited company of peaceful electron science and technology (Aigtek) it is the high-tech business that domestic major pursues measuring instrument research and development, production and sale. The relevant industry that the company devotes oneself to the product of power amplifier, metric calibration, product such as wiring harness instrument to be core checks the research of the solution, offer the test program that has competition ability for the user.
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