Compensation (engineering)


Compensation (engineering)

In engineering, compensation is planning for side effects or other unintended issues in a design. The design of an invention can itself also be to compensate for some other existing issue or exception.

One example is in a voltage-controlled crystal oscillator (VCXO), which is normally affected not only by voltage, but to a lesser extent by temperature. A temperature-compensated version (a TCVCXO) is designed so that heat buildup within the enclosure of a transmitter or other such device will not alter the piezoelectric effect, thereby causing frequency drift.

Another example is motion compensation on digital cameras and video cameras, which keep a picture steady and not blurry.

Other examples in electrical engineering include:

There are also examples in civil engineering:

Railways

  • On railways, steep gradients on sharp curves have an equivalent gradient slightly steeper than the stated value. This is because of extra friction of the wheel on the rails, and because wagons stretch out on the chord rather than on the arc, and may thus cause trains to stall. To compensate, the gradient of ruling grades is slightly reduced from say 1 in 50 to 1 in 53.



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