公开(公告)号：US20230237886A1

公开(公告)日：2023-07-27

申请号：US18080900

申请日：2022-12-14

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Marco A. JANKO ,  Filippo ROSSI ,  Hamid SEPEHR ,  Kyle WILKINSON ,  Emmanuel A. MARCHAIS ,  Vadim KONRADI ,  Anil LAL ,  Aleksey S. KHENKIN ,  Chin Huang YONG

IPC: G08B6/00

CPC classification number: G08B6/00

Abstract: A method for determining and mitigating over-excursion of an internal mass of an electromechanical transducer may include measuring a sensed signal associated with the electromechanical transducer in response to a driving signal driven to the electromechanical transducer, determining a non-linearity value based on the sensed signal, mapping the non-linearity value to a probability of over-excursion of the internal mass, and applying a gain to a signal path configured to generate the driving signal based on the probability.

公开(公告)号：US20220196497A1

公开(公告)日：2022-06-23

申请号：US17128922

申请日：2020-12-21

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Pablo PESO PARADA ,  Tom BIRCHALL ,  Hamid SEPEHR ,  Filippo ROSSI

IPC: G01L1/26 ,  G01L5/16

Abstract: A baseline unit for use in a sensor system, the sensor system comprising N force sensors which output N sensor signals, respectively, where N≥2, the baseline unit configured to: monitor measures of gradients of the respective sensor signals; and, in dependence upon the measures of the gradients, control a stored baseline setting to control how a baseline signal for at least one of said sensor signals is calculated using a baseline-calculation method, the baseline-calculation method configured by the currently-stored baseline setting.

公开(公告)号：US20230245537A1

公开(公告)日：2023-08-03

申请号：US18095305

申请日：2023-01-10

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Anil LAL ,  Hamid SEPEHR ,  Aleksey S. KHENKIN ,  Filippo ROSSI ,  Vadim KONRADI ,  Marco A. JANKO ,  Chin H. YONG ,  Colin CAMPBELL

IPC: G08B6/00

CPC classification number: G08B6/00

Abstract: A method for determining and mitigating over-excursion of an internal mass of an under-damped electromechanical transducer may include transforming an electrical playback signal to an estimated displacement signal, based on the estimated displacement signal, determining an estimated over-excursion of the internal mass responsive to the electrical playback signal, and limiting, based on the estimated over-excursion, an electrical driving signal derived from the electrical playback signal and for driving the electromechanical transducer in order to mitigate over-excursion of the internal mass.