Inventor
ROWAN TIMOTHY M
US30 patents
⚠️ This page may combine multiple inventors who share the name “ROWAN TIMOTHY M”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ALLEN BRADLEY CO
15 patentsUS6014007AJan 11, 2000
Method and apparatus for starting an AC drive into a rotating motor
ALLEN BRADLEY CO67 citations96
US5965995AOct 12, 1999
Transient inductance tuner for motor control
ALLEN BRADLEY CO61 citations96
US5140248AAug 18, 1992
Open loop motor control with both voltage and current regulation
ALLEN BRADLEY CO66 citations96
US5032771AJul 16, 1991
Slip control based on sensing voltage fed to an induction motor
ALLEN BRADLEY CO76 citations96
US5008608AApr 16, 1991
Controller for starting and stopping electric motors
ALLEN BRADLEY CO95 citations95
US5479081ADec 26, 1995
AC motor controller with voltage margin adjustment
ALLEN BRADLEY CO31 citations92
US5298847AMar 29, 1994
Counter EMF detector for use in electric motor controllers
ALLEN BRADLEY CO30 citations92
US5003241AMar 26, 1991
Motor stoppage detection using back emf voltage
ALLEN BRADLEY CO44 citations92
US4996470AFeb 26, 1991
Electric motor speed control apparatus and method
ALLEN BRADLEY CO33 citations92
US4916370AApr 10, 1990
Motor stoppage apparatus and method using back emf voltage
ALLEN BRADLEY CO38 citations92
US4862052AAug 29, 1989
Method for stopping an electric motor
ALLEN BRADLEY CO24 citations92
US5923144AJul 13, 1999
Frequency generator for a motor controller
ALLEN BRADLEY CO21 citations91
US4680695AJul 14, 1987
Cross coupled current regulator
ALLEN BRADLEY CO18 citations82
US4978897ADec 18, 1990
Motor controller with an improved stopping technique
ALLEN BRADLEY CO22 citations81
US4706012ANov 10, 1987
Frequency compensated regulator
ALLEN BRADLEY CO11 citations74
ROCKWELL AUTOMATION TECH INC
11 patentsUS7135833B2Nov 14, 2006
Motor control for flux-reduced braking
ROCKWELL AUTOMATION TECH INC25 citations92
US7268514B2Sep 11, 2007
Motor control for stopping a load and detecting mechanical brake slippage
ROCKWELL AUTOMATION TECH INC34 citations86
US10601343B1Mar 24, 2020
Power conversion system with PWM carrier transition smoothing and autotuning
ROCKWELL AUTOMATION TECH INC12 citations84
US9774284B2Sep 26, 2017
Rotor position estimation apparatus and methods
ROCKWELL AUTOMATION TECH INC7 citations84
US10541626B1Jan 21, 2020
Power conversion system with PWM carrier emulation
ROCKWELL AUTOMATION TECH INC10 citations83
US9318976B1Apr 19, 2016
Adjustable PWM method to increase low speed starting torque and inverter voltage measurement accuracy
ROCKWELL AUTOMATION TECH INC18 citations83
US9584043B2Feb 28, 2017
Inverter phase current reconstruction apparatus and methods
ROCKWELL AUTOMATION TECH INC5 citations73
US10389292B1Aug 20, 2019
DC bus regulation using rectifier and inverter
ROCKWELL AUTOMATION TECH INC4 citations71
US11258388B1Feb 22, 2022
Systems and methods for performing motor control operations agnostic of speed data
ROCKWELL AUTOMATION TECH INC0 citations62
US10727772B1Jul 28, 2020
Predicting an induction machine load pattern
ROCKWELL AUTOMATION TECH INC1 citations62
US11368109B2Jun 21, 2022
Power conversion system with PWM carrier transition smoothing and autotuning
ROCKWELL AUTOMATION TECH INC0 citations61