First, the influence of the applied voltage The higher the power supply voltage, the smaller the fluctuation of the speed of the aluminum shell micro-reducer under periodic load, and the smaller the current in the cage winding. The better the stability of the aluminum-shell micro-motor at this time. . The voltage drop causes the aluminum case micro reducer to operate at a reduced efficiency under periodic load.
Second, the impact of the cyclic load variation amplitude The larger the periodic load variation range, the greater the oscillation of the aluminum shell motor speed away from the synchronous speed, the greater the current in the cage winding; the smaller the load variation range, the aluminum shell The dynamic efficiency of the micro reducer is also correspondingly higher.
Third, the influence of moment of inertia When the moment of inertia is large, the aluminum shell micro-motor rotates under periodic load and the current in the cage winding is small, appropriately increase the moment of inertia of the aluminum shell micro-reducer to improve the aluminum shell micro-deceleration The dynamic stability of the machine is advantageous, but the excessive increase of J may cause the aluminum reducer to operate in an unstable manner. Increasing the moment of inertia can improve the dynamic efficiency of the aluminum shell micromotor under periodic load.
Fourth, the influence of stator resistance Stator resistance is a parameter of the aluminum shell micro-motor under the cyclic load on the dynamic efficiency of the aluminum shell micro-reducer. The larger the stator resistance, the higher the speed of the aluminum shell micromotor oscillation and the higher the current in the cage winding under periodic load, and vice versa. When the stator resistance drops, the severity of the transition process caused by the load change decreases, and the transition process tends to be shorter. Reducing the stator resistance value is beneficial to improve the electromechanical stability of the aluminum shell micro reducer, and can also reduce the additional loss of the aluminum shell micro reducer at this time, and improve the dynamic operation efficiency of the aluminum shell micro reducer under periodic load.
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Label: Reasons for the dynamic efficiency of aluminum shell miniature reducers
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The RCA interface (CVBS)
Composite Video Broadcast Signal
CVBS is short for Composite Video Broadcast Signal. This is the most common video interface, the first application in the field of radio and television, then a lot of camera output support the CVBS interface, CVBS signals are interlaced video signal, and a resolution of 720 x576 (PAL) or 720 x480 (NTSC), CVBS is the analog video signal interface, has gradually been digital video signal interface and replace the hd video signal interface.
The AV interface (CVBS)
AV video interface English full name is: "Composite video connector", AV terminal is usually consists of three lines, transmission of video is usually yellow RCA terminal, the other with two red and white RCA terminal transmit audio, transmitted in AV terminal is analog TV signal source of three elements: Y, U, V, as well as the benchmark of the pulse signal synchronization. Y represents the brightness of the image (luminance, also called brightness), and contains the sync pulse, as long as there is signal Y can see black and white television image (in fact, this is the method of color TV and early black and white TV compatible). The U and V signals are loaded with color data. The U and V are first mixed into two sets of orthogonal phases ina signal (the mixed signal is called Chrominance), and then summed with the Y signal. Since Y is the fundamental signal and UV is mixed with the carrier, this summing action is equivalent to frequency division multiplexing.
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