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    • 2. 发明公开
    • VERFAHREN ZUR ANREGUNG VON PIEZOELEKTRISCHEN WANDLERN UND SCHALLERZEUGUNGSANORDNUNG
    • EP3408036A1
    • 2018-12-05
    • EP17700513.9
    • 2017-01-12
    • Weber Ultrasonics GmbH
    • BROSZEIT, Ralf
    • B06B1/02B08B3/12
    • B06B1/0284B06B2201/71B08B3/12
    • Proposed is a method for exciting sound-wave producing transducers (7) which have operating frequencies defining a transducer frequency range, in which a generator (9) produces an electrical drive signal for the transducers (7), said electrical drive signal being fed to the transducers (7), wherein the generator (9) carries out frequency sweeps in a frequency sweep range between a minimum frequency (f
      min ) and a maximum frequency (f
      max ) with an adjustable sweep rate, with a target frequency (f
      Ziel ) being defined within said frequency sweep range, said method being characterized in that the minimum frequency (f
      min ), the maximum frequency (f
      max ) and the target frequency (f
      Ziel ) are selected in such a way that a first frequency difference (Δf
      1 ) between the minimum frequency (fmin) and the target frequency (f
      Ziel ) differs in terms of magnitude from a second frequency difference (Δf
      2 ) between the maximum frequency (f
      max ) and the target frequency (f
      Ziel ) within a number of frequency sweeps, and wherein the minimum frequency (f
      min ) and/or the maximum frequency (f
      max ) and/or the target frequency (f
      Ziel ) is/are modified after at least one frequency sweep in such a way that an arithmetic mean of the first frequency differences (Δf
      1 ), formed over all frequency sweeps carried out, and an arithmetic mean of the second frequency differences (Δf
      2 ), formed over all frequency sweeps carried out, are substantially the same in terms of magnitude.
    • 3. 发明公开
    • VERFAHREN UND SCHALTUNGSANORDNUNG ZUM BESTIMMEN EINES ARBEITSBEREICHS EINES ULTRASCHALL-SCHWINGGEBILDES
    • 方法和电路装置用于确定超声振荡结构的工作区。
    • EP2892660A2
    • 2015-07-15
    • EP13762428.4
    • 2013-09-09
    • Weber Ultrasonics GmbH
    • BRÜHN, XeniaBROSZEIT, Ralf
    • B06B1/02
    • B06B1/0207B06B1/0261B06B2201/40B23K20/10G01R27/02G01R31/2829
    • The invention relates to a method for determining a working range of an ultrasonic vibrating unit (7), which ultrasonic vibrating unit (7) is supplied with electrical power by a generator (2) via an output (2a) and is excited to vibrate ultrasonically, wherein at least constituent parts of the ultrasonic vibrating unit (7), preferably an ultrasonic converter (8) contained therein, and constituent parts of the generator (2), preferably a matching network (2b) on the output side, form a tuned circuit (2c, 2d). Said method is characterized in that a measuring circuit (3) is connected upstream of the output (2a) of the generator (2), via the measuring circuit (3), a voltage (U) is applied to the tuned circuit, by means of the measuring circuit (3), at least the phase, preferably magnitude and phase, of an impedance of the tuned circuit are measured, and at least the phase, preferably the phase and magnitude, of the impedance are evaluated in order to determine the working range. The invention further relates to a circuit arrangement for carrying out the aforementioned method.
    • 通过在输出端(2a)中提供的是由发电机(2)在超声波振动部(7),该超声波振动部(7)被供给电功率的操作范围确定性采矿的方法和被激发超声振动,worin 在超声波振动部(7)的至少构成部件,优选地在超声换能器(8)其中所含,和发电机的组成部分(2),优选匹配网络(图2b)上的输出侧,形成一个调谐电路( 2C,2D)。 该方法的特征在于,没有一个测量电路(3)被连接经由测量电路(3),电压(U)被施加到调谐电路的发电机(2)的输出端(2a)的上游,并且通过 测量电路(3),至少相,优选的幅度和相位,所述调谐电路的阻抗的大小的被测量,并且至少所述相,优选相位和,阻抗的被评估以确定矿工作 范围。 本发明还涉及一种用于实施上述方法的电路装置。