Huawei Technologies Co., Limited

Carrier Corporation

Parade Technologies, Ltd.

Liang Chang

Ting Xu

Joon Suh Kim

Jian Ni

Qing Lu

Guangyu Shen

Kochung Lee

Hui Zhai

Hongquan Wang

Xiaohong Wang

Ying Zhao

Haibo Luo

Liang Xu

Pei Sun

Jenhui Liao

Hung-Yi Huang

Jingwei Tang

Lishan Wang

Yang Wan

Sungchun Jeon

YiTing Chen

Cindy Cheng

Jingwei Sun

Mobile phone

This application is directed to frequency controlling in an electronic device that includes a selector, a clock generated, and a controller. The selector selects one of a first reference signal and a second reference signal as an input signal having an input phase. The clock generator receives the input signal and generates a periodic signal, and the periodic signal has an output phase that matches the input phase of the input signal. While the first reference signal is selected as the input signal, the controller identifies a temporal range including a peak instant at which the second reference signal reaches a peak frequency, select a switching instant within the temporal range based on a known temporal position of the peak instant with respect to the temporal range, and control the selector to select the second reference signal as the input signal at the switching instant.

Methods and systems for controlling frequency and phase variations for PLL reference clocks

This application is directed to frequency controlling in an electronic device (e.g., a retimer of a data link). The electronic device includes a selector, a clock generated, and a controller. The selector selects one of a first reference signal and a second reference signal as an input signal having an input phase. The clock generator receives the input signal and generates a periodic signal with reference to the input signal, and the periodic signal has an output phase that matches the input phase of the input signal. While the first reference signal is selected as the input signal, the controller determines whether the second reference signal is in a temporal range in which the second reference signal reaches a peak frequency and controls the selector to select the second reference signal as the input signal in accordance with a determination that the second reference signal is in the temporal range.

Methods and systems for controlling frequency variation for a PLL reference clock

A heat cycle system and a control method. The heat cycle system includes: driving devices, one or a plurality of outdoor units, and a plurality of indoor units, which are connected by pipelines; a bypass pipeline for the plurality of indoor units, a bypass valve being disposed in the bypass pipeline; a pressure sensor that senses a pressure difference &#x394;Pacross the plurality of outdoor units; and a controller that is preset with a pressure difference set value &#x394;P, wherein the controller calculates a pressure offset parameter &#x394;P=&#x394;P&#x2212;&#x394;Pand adjusts an opening degree of the bypass valve based on the pressure offset parameter &#x394;P so that the pressure offset parameter &#x394;P approaches zero, and wherein the controller is preset with a first pressure offset threshold P, and the controller is configured such that closed indoor units enter a bypass mode one by one when &#x394;P&#x3e;P, until &#x394;P&#x2264;P.

Thermal cycling system and control method of the thermal cycling system

An air conditioning system and a control method thereof. The air conditioning system includes: a plurality of indoor units connected in parallel; a plurality of outdoor units connected in parallel; and a coolant circulation circuit which circulates coolant through each of the indoor units connected in parallel and each of the outdoor units connected in parallel respectively, and which exchanges heat with each of the indoor units and each of the outdoor units; wherein the air conditioning system further includes a controller which, based on a number of actively operating indoor units, a total number of the indoor units and a total number of the outdoor units, defines an upper limit of a number of actively operating outdoor units, so that the flow rate of the coolant flowing through the actively operating outdoor units is not lower than a preset flow rate.

Air conditioning system and control method therof

A water circulation system for air conditioning system and a control method thereof, wherein the water circulation loop comprises: a main loop provided with air-conditioning indoor units, air-conditioning outdoor units and an actuator, and a bypass branch connected between upstream and downstream of the air-conditioning outdoor units and provided with a bypass valve; the control method comprises: Sstarting the water circulation system after receiving a start command; Sexecuting a PID control step after initialization and a first preset time period of the water circulation system; Sexecuting a feed forward control step when the operating states of the air-conditioning indoor units and/or the air-conditioning outdoor units are changed, and going back to execute the PID control step after a second preset time period; and Sexecuting a shutdown step of the water circulation system after receiving a shutdown command.

Water circulation system for air conditioning system and control method thereof

Terminal device

Growing community of inventors

Shanghai, China

Liang Chang