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公开(公告)号：US10141884B2
公开(公告)日：2018-11-27
申请号：US15460812
申请日：2017-03-16
申请人： Dell Products L.P.
发明人： Kevin Locke , Travis North , Joohyun Woo
摘要： A method for cooling system components of information handling systems may include generating a first pulse width modulation (PWM) control signal for controlling at least one cooling fan configured to cool a system component, filtering the first PWM control signal, and applying the filtered first PWM control signal to the at least one cooling fan. The first PWM control signal may be used to control a component fan and then filtered to generate a filtered first PWM control signal used to control a system fan. The filtering of the control signal may include dampening the control signal such that the control signal is less responsive to temperature changes as the temperature nears a set temperature.
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公开(公告)号：US20180275696A1
公开(公告)日：2018-09-27
申请号：US15466453
申请日：2017-03-22
申请人： Dell Products L.P.
发明人： Travis North , Chris Helberg , Austin Shelnutt , Kevin Locke , Joohyun Woo
IPC分类号： G05D23/19 , G05B19/048
CPC分类号： G05D23/1917 , G05B19/048 , G05B2219/42033
摘要： Control signals, such as PWM control signals, can be used to control aspects of a cooling system and can be generated using proportional-integral-derivative (PID) control. PID control systems for cooling systems are designed based on default environmental and system characteristics and pre-programmed for operation prior to delivery to customers or end users. Changes in environmental and system characteristics, such as component aging, environmental variations, and variation in manufacturing from system to system, such as heat sink effectiveness and application of thermal pastes, can impact system level performance of the control system. Adjusting gain parameters for the P, I, and D components of a PID control signal can reduce negative impact on system performance resulting from such changes and allow the control system to better adjust to external factors.
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公开(公告)号：US10678278B2
公开(公告)日：2020-06-09
申请号：US15461149
申请日：2017-03-16
申请人： Dell Products L.P.
发明人： Kevin Locke , Travis North , Joohyun Woo
摘要： Controlling an activation status of a proportional-integral-derivative (PID) controller for an information handling system cooling system, such as the on/off status of the PID controller, can reduce power consumption and processing and memory requirements for such a system. A decrease in resource consumption can be realized by deactivating the PID controller during certain periods and activating the PID controller during others. For example, the PID controller can be deactivated when a temperature of a system component falls below a threshold temperature and activated when the temperature of the system component rises above the threshold temperature.
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公开(公告)号：US20180267582A1
公开(公告)日：2018-09-20
申请号：US15461204
申请日：2017-03-16
申请人： Dell Products L.P.
发明人： Joohyun Woo , Kevin Locke , Travis North , Andrew Ingalls
摘要： Adjusting a cooling fan speed control profile to account for system implementation factors, such as ambient temperature and usage history, can optimize power consumption and reduce the volume and variation of sound generated by shifts in fan speed in response to changes in system and component temperature. Adjusting a cooling fan speed control profile may include adjusting a maximum fan speed based on an ambient temperature or component temperature of the information handling system.
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公开(公告)号：US20180267566A1
公开(公告)日：2018-09-20
申请号：US15461149
申请日：2017-03-16
申请人： Dell Products L.P.
发明人： Kevin Locke , Travis North , Joohyun Woo
IPC分类号： G05D23/19 , G05B19/048 , H05K7/20
摘要： Controlling an activation status of a proportional-integral-derivative (PID) controller for an information handling system cooling system, such as the on/off status of the PID controller, can reduce power consumption and processing and memory requirements for such a system. A decrease in resource consumption can be realized by deactivating the PID controller during certain periods and activating the PID controller during others. For example, the PID controller can be deactivated when a temperature of a system component falls below a threshold temperature and activated when the temperature of the system component rises above the threshold temperature.
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公开(公告)号：US10571979B2
公开(公告)日：2020-02-25
申请号：US15461204
申请日：2017-03-16
申请人： Dell Products L.P.
发明人： Joohyun Woo , Kevin Locke , Travis North , Andrew Ingalls
摘要： Adjusting a cooling fan speed control profile to account for system implementation factors, such as ambient temperature and usage history, can optimize power consumption and reduce the volume and variation of sound generated by shifts in fan speed in response to changes in system and component temperature. Adjusting a cooling fan speed control profile may include adjusting a maximum fan speed based on an ambient temperature or component temperature of the information handling system.
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公开(公告)号：US10274977B2
公开(公告)日：2019-04-30
申请号：US15466453
申请日：2017-03-22
申请人： Dell Products L.P.
发明人： Travis North , Chris Helberg , Austin Shelnutt , Kevin Locke , Joohyun Woo
IPC分类号： G05D23/00 , G05D23/19 , G05B19/048
摘要： Control signals, such as PWM control signals, can be used to control aspects of a cooling system and can be generated using proportional-integral-derivative (PID) control. PID control systems for cooling systems are designed based on default environmental and system characteristics and pre-programmed for operation prior to delivery to customers or end users. Changes in environmental and system characteristics, such as component aging, environmental variations, and variation in manufacturing from system to system, such as heat sink effectiveness and application of thermal pastes, can impact system level performance of the control system. Adjusting gain parameters for the P, I, and D components of a PID control signal can reduce negative impact on system performance resulting from such changes and allow the control system to better adjust to external factors.
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公开(公告)号：US20180269821A1
公开(公告)日：2018-09-20
申请号：US15460812
申请日：2017-03-16
申请人： Dell Products L.P.
发明人： Kevin Locke , Travis North , Joohyun Woo
摘要： A method for cooling system components of information handling systems may include generating a first pulse width modulation (PWM) control signal for controlling at least one cooling fan configured to cool a system component, filtering the first PWM control signal, and applying the filtered first PWM control signal to the at least one cooling fan. The first PWM control signal may be used to control a component fan and then filtered to generate a filtered first PWM control signal used to control a system fan. The filtering of the control signal may include dampening the control signal such that the control signal is less responsive to temperature changes as the temperature nears a set temperature.
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