Inventor

LIU JINGBO

US41 patents

⚠️ This page may combine multiple inventors who share the name “LIU JINGBO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

LIU JINGBO

ROCKWELL AUTOMATION TECH INC

Sensorless motor drive vector control

Transition scheme for position sensorless control of AC motor drives

Cascaded H-Bridge (CHB) inverter level shift PWM with rotation

Rotor position estimation apparatus and methods

Position sensorless open loop control for motor drives with output filter and transformer

Method and apparatus for controlling power converter with inverter output filter

Methods and systems for sensorless closed loop motor speed and torque control

Method and apparatus for identifying orientation of a stationary rotor in a sensor-less PMSM

Current control of motor drives with output sinewave filter

Sensorless motor drive vector control with feedback compensation for filter capacitor current

System and method to modify training content presented by a training system based on feedback data

Electric motor with asymmetric design for improved operation

System and method to index training content of a training system

Cascaded H-bridge (CHB) inverter level shift PWM with rotation

Feedforward control of motor drives with output sinewave filter

Universal adaptive torque control for PM motors for field-weakening region operation

System and method to generate training content based on audio and image feedback data

Digital twin outcome-driven orchestration

System and method for universal adaptive torque control of permanent magnet motors

Control of motor drives with output sinewave filter capacitor current compensation using sinewave filter transfer function

LIU JINGBO

Cascaded H-bridge (CHB) inverter level shift PWM with rotation

Position sensorless open loop control for motor drives with output filter and transformer

Method and apparatus for automatically identifying electrical parameters in a sensor-less PMSM

Power stage precharging and dynamic braking apparatus for multilevel inverter

Method and apparatus for estimating rotor position in a sensorless synchronous motor

Rotor position estimator for an electrical machine

Method and apparatus for stability control of open loop motor drive operation

Method and apparatus for controlling power converter with inverter output filter

ZHUHAI SHICHANG METALS LTD

Folding table

Table height adjustment mechanism

Chair linking system

NONDAHL THOMAS

Method and apparatus for stability control of open loop motor drive operation

Method and apparatus for speed reversal control of motor drive

US GOV AIR FORCE

Slow release calcium composition

Ytterbium as a surrogate cation to measure calcium flux

ALCON INC

In-situ adjustable intraocular lens

In-situ adjustable intraocular lens

ROYAK SEMYON

Method and apparatus for increased current stability in a PWM drive

PENG CHENG LAB

Method, apparatus, and device for selecting parameters of channel state information, and storage medium

HONOR DEVICE CO LTD

Electronic device

WALMART APOLLO LLC

Systems and methods for improving search result personalization and contextualization using machine learning models