INFORMATION HANDLING SYSTEM DYNAMIC ACOUSTICAL MANAGEMENT

摘要

Acoustics management at an information handling system provides reduced acoustic noise with limited performance impact by dynamically changing power dissipation as a function of cooling fan speed and ambient temperature so that preemptive power restrictions prevent excessive thermal conditions that lead to excessive cooling fan speeds and associated acoustics. A maximum cooling fan speed of less than an available maximum is set and maintained by reducing power dissipation unless power dissipation reaches a minimum, after which the minimum power dissipation is maintained and cooling fan speed is allowed to increase.

主权项

1. An information handling system comprising:
a housing; plural components disposed in the housing and operable to cooperate to process information; a cooling fan disposed in the housing and operable to spin at varying speeds to transfer thermal energy from the housing with a cooling airflow proximate at least some of the components; a thermal sensor operable to determine thermal conditions of the housing; a power manager operable to manage power applied to the plural components; and a fan controller interfaced with the cooling fan, the thermal sensor and the power manager, the fan controller operable to adjust power dissipation of power by the power manager as a function of cooling fan speed and housing thermal conditions to selectively maintain cooling fan speed within a predetermined acoustical limit.