Rotational speed control method and device
A speed control and speed technology, applied in the direction of electric speed/acceleration control, etc., can solve the problems of shortening the service life of the rotating device and related hardware, switching the speed of the device back and forth, reducing the reliability of the system, etc., to achieve stable temperature and extended use The effect of life and shortening of life
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example 1
[0030] This example provides a fan speed control method aiming at eliminating the defects of the existing fan speed control methods. Under the condition of ensuring the safe heat dissipation of the equipment and minimizing the noise of the equipment, the reliability of the system is further improved.
[0031] The principle of the technical solution adopted in this example can be found in figure 2 , for the convenience of description, define here figure 2 The principle shown is multi-stage speed regulation with hysteresis. The specific implementation plan is as follows:
[0032] Set the speed corresponding to a certain temperature range. The minimum and maximum values corresponding to each temperature range are Tax and Tbx (x=1, 2, ..., n; n is the number of segments divided by temperature), and the speed corresponding to the range of Tax ~ Tbx is Nx. Different from the existing speed control method, when dividing the temperature range, the temperature is repeatedly div...
example 2
[0048] This example can be implemented based on the technical principles described in Example 1. For the principles of related steps, refer to the description in Example 1, which will not be repeated in this example. like Figure 5 As shown, the fan speed control method described in this example includes:
[0049] Step S502, setting a plurality of temperature ranges with a return difference, and defining the rotation speed corresponding to each temperature range. For specific implementation principles, refer to related descriptions in the examples, and details are not repeated here.
[0050] Step S504, read the system temperature.
[0051] Step S506, determine which temperature range the read system temperature falls into and record the determined temperature range.
[0052] Step S508, read the outside temperature again.
[0053] Step S510, judging whether the external temperature read in S508 falls within the temperature range recorded in step S506, if yes, go to step S51...
example 3
[0058] This example provides a method for controlling the fan speed of communication equipment that can be applied to a communication equipment room. The above-mentioned communication device is composed of a main control board, a fan control board and several other single boards, and the fan speed control is completed on the fan control board. Since there is no more precise requirement on the temperature, the fan speed is divided into 4 temperature ranges, that is, into 4 gears. As shown in Table 1.
[0059] Table 1 Correspondence between temperature range and fan speed
[0060] temperature range
Below 38°C
34℃～46℃
42℃～50℃
Above 46°C
speed of the fan
1200RPM
1500RPM
2100RPM
3000RPM
[0061] The following are the setting conditions for the fan speed adjustment of the fan control board:
[0062] The minimum speed of the system is controlled at 1200RPM, and the maximum speed is 3000RPM.
[0063] The speed difference ...
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