Patent ID: 7863839

Claim:
A fan control system, comprising: a fan to provide a flow of coolant to a machine; a first sensor configured to generate a first signal indicative of an operational parameter of the machine; a second sensor associated with the fan to generate a second signal indicative of an actual speed of the fan; and a controller communicatively coupled to the fan, the first sensor, and the second sensor, the controller being configured to: generate a third signal indicative of a desired fan speed based on the first signal; generate a fourth signal indicative of a difference between the desired fan speed and the actual fan speed; and drive the fan based on the third signal and the fourth signal; wherein generating the third signal includes: determining a maximum achievable fan speed and a minimum achievable fan speed based on a current speed of a power source associated with the machine; and interpolating a desired fan speed between the minimum achievable fan speed and the maximum achievable fan speed based on the first signal.