Industry News

NdFeB magnet vibration system components

2018-08-09
Effective Ares is the effective area; Effective Diameler is the effective diameter; Fixed Mass is the fixed amount; Specify Fs is the specified resonant frequency; Use calculated Fs is the calculated resonant frequency; Cone 10 Surround Resonance is the resonant frequency of the diaphragm + folding ring; Sunound Compliance (Approx approximation) is a ring-like compliant; Spider Load is a centering piece load; Spider Resonance (loaded, dyn plus load, dynamic) is the centering piece resonance frequency; Spider DeAection (loaded, static plus load, static ) is the elasticity of the centering piece.
   In the vibration system component window, the first 5 sets of data need to be input, but the effective area and the effective diameter are related, and 4 sets of data are actually input. It should be noted here that there are three algorithms for the effective vibration diameter of the diaphragm:
   (1) Calculate only the diameter of the diaphragm;
   (2) Diaphragm diameter + 1/3 fold width;
   (3) Diaphragm diameter + 1/10,000 fold ring width.
   Due to the different shapes of the folding rings, the influence of the shape on the performance at different frequencies is not satisfactory. The calculation of the meta-thesis is not accurate. It is recommended to use effective diaphragm diameter = diaphragm diameter + 1/2 loop width. Here Fs uses "calculated".
    In the figure, the resonance frequency (Cone + Sunound Resonance Fo) or the Sunound Compliance of the diaphragm + folding ring has no uniform standard according to the domestic industry. The cistern of the folding ring is measurable. In this software, the input ring of the ring can automatically calculate the resonant frequency of the diaphragm + folding ring.
    Similarly, there is no standard in the domestic industry for the resonant frequency test of centering slabs. For example, the calculation can input the centering piece along the resonance frequency, the centering piece displacement, the centering piece compliant, and the centering piece elasticity. You must tick "Use calculated Fs" before entering.

Voice coil
     The voice coil input window can be selected as Wire Types, such as Round Wire, Edge Wjre, Wire Material, such as Copper, Aluminium, and Copper. Copper (Copper clad Aluminium); then input the voice coil resistance (Voice CoilResistance), which is the electrical impedance does not include the access wire resistance; Voice Coil Inside Diameter refers to the inner diameter of the voice coil holder; voice coil layer ( Number of Layers); Voice Coil Former Thickness; Wire Stretch.
     The magnetic circuit is in the window, and the Magnet Type offers a variety of options, with the Magnet Size drop-down menu having common dimensions. To create a special size, click on the Edit Magnet Dimensions to bring up the window. Shows the remaining magnetic material of the material, Ma Lumet.material B. (in Gauss, IGs = O. OOOIT), coercivity Magnet materrial HI (in Oersted); input other parameters such as magnetic gap (Air Gap), Top PLate, Pole, Top Plact thickness, TopPlact ID, and thickness of the lower plate.
     Compensate the top plate inner diameter (Compensated Top Plact ID). In some cases, you will encounter a thicker voice coil wire or a four-layer voice coil.凄 Larger magnetic gap, for this purpose, select the compensation inner diameter of the upper plate, and check the hook.
     Coil Clearance is the gap of the sound map. Enter the required gap to calculate the inner diameter of the upper magnetic plate. The minimum outer diameter of the magnetic plate (Min Top Plate OD) is recommended by the system; the magnetic pole (Pole); the outer diameter of the magnetic column (Pole) OD).