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公开(公告)号:US11116043B2
公开(公告)日:2021-09-07
申请号:US17115685
申请日:2020-12-08
Inventor: Ivan Ermanoski , Xiang Gao , Ryan Milcarek
Abstract: A high temperature heater lamp including a ceramic envelope is disclosed. The ceramic envelope is substantially infrared transparent and is composed of a refractory ceramic. The heater lamp also includes two lead wires communicatively coupled via a filament. The filament is enclosed within the ceramic envelope, which is evacuated. The heater lamp may include at least two metallic IR shields within the ceramic envelope, at least one located on either side of the filament. The filament may be tungsten, a carbon filament, or molybdenum. At least one end of the ceramic envelope may be sealed with a metal cap affixed to the ceramic envelope by a high vacuum sealant. The heater lamp may be configured to operate at above 1500° C. The ceramic envelope may have a wall thickness less than 1 mm thick.
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公开(公告)号:US11477855B2
公开(公告)日:2022-10-18
申请号:US17467090
申请日:2021-09-03
Inventor: Ivan Ermanoski , Xiang Gao , Ryan Milcarek
Abstract: A high temperature heater lamp including a ceramic envelope is disclosed. The ceramic envelope is substantially infrared transparent and is composed of a refractory ceramic. The heater lamp also includes two lead wires communicatively coupled via a filament. The filament is enclosed within the ceramic envelope, which is evacuated. The heater lamp may include at least two metallic IR shields within the ceramic envelope, at least one located on either side of the filament. The filament may be tungsten, a carbon filament, or molybdenum. At least one end of the ceramic envelope may be sealed with a metal cap affixed to the ceramic envelope by a high vacuum sealant. The heater lamp may be configured to operate at above 1500° C. The ceramic envelope may have a wall thickness less than 1 mm thick.
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公开(公告)号:US20210400773A1
公开(公告)日:2021-12-23
申请号:US17467090
申请日:2021-09-03
Inventor: Ivan Ermanoski , Xiang Gao , Ryan Milcarek
Abstract: A high temperature heater lamp including a ceramic envelope is disclosed. The ceramic envelope is substantially infrared transparent and is composed of a refractory ceramic. The heater lamp also includes two lead wires communicatively coupled via a filament. The filament is enclosed within the ceramic envelope, which is evacuated. The heater lamp may include at least two metallic IR shields within the ceramic envelope, at least one located on either side of the filament. The filament may be tungsten, a carbon filament, or molybdenum. At least one end of the ceramic envelope may be sealed with a metal cap affixed to the ceramic envelope by a high vacuum sealant. The heater lamp may be configured to operate at above 1500° C. The ceramic envelope may have a wall thickness less than 1 mm thick.
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公开(公告)号:US20230066952A1
公开(公告)日:2023-03-02
申请号:US17792695
申请日:2020-11-16
Applicant: North Carolina State University , ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY
IPC: A61F2/68
Abstract: Systems and methods for tuning a powered prosthesis are described herein. A system includes a powered prosthesis including a joint, a motor mechanically coupled to the joint, a plurality of sensors, a finite state machine, and an impedance controller. The sensors are configured to measure a plurality of gait parameters, and the finite state machine is configured to determine a gait cycle state. The impedance controller is configured to output a control signal for adjusting a torque of the motor, where the torque is adjusted as a function of the measured gait parameters and a plurality of impedance control parameters, and where the impedance control parameters are dependent on the gait cycle state. The system also includes a reinforcement learning controller operably connected to the powered prosthesis. The reinforcement learning controller is configured to tune the impedance control parameters to achieve a target gait characteristic using a training data set.
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公开(公告)号:US20210176827A1
公开(公告)日:2021-06-10
申请号:US17115685
申请日:2020-12-08
Inventor: Ivan Ermanoski , Xiang Gao , Ryan Milcarek
Abstract: A high temperature heater lamp including a ceramic envelope is disclosed. The ceramic envelope is substantially infrared transparent and is composed of a refractory ceramic. The heater lamp also includes two lead wires communicatively coupled via a filament. The filament is enclosed within the ceramic envelope, which is evacuated. The heater lamp may include at least two metallic IR shields within the ceramic envelope, at least one located on either side of the filament. The filament may be tungsten, a carbon filament, or molybdenum. At least one end of the ceramic envelope may be sealed with a metal cap affixed to the ceramic envelope by a high vacuum sealant. The heater lamp may be configured to operate at above 1500° C. The ceramic envelope may have a wall thickness less than 1 mm thick.
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