Apparatus and method for obtaining information on rotation of DC commutator motor
US-10962346-B2 · Mar 30, 2021 · US
Motor speed determination based on the current and/or voltage without using a tachogenerator or a physical encoder
Motor speed determination based on the current and/or voltage without using a tachogenerator or a physical encoder · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02P2203/09 |
| Official title | Motor speed determination based on the current and/or voltage without using a tachogenerator or a physical encoder |
| Display label | Motor speed determination based on the current and/or voltage without using a tachogenerator or a physical encoder |
| Total patents | 107 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 7 |
| 2017 | 7 |
| 2018 | 11 |
| 2019 | 14 |
| 2020 | 18 |
| 2021 | 9 |
| 2022 | 20 |
| 2023 | 7 |
| 2024 | 4 |
| 2025 | 5 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electric motor protection using stator current and voltage measurements
US-10848092-B2 · Nov 24, 2020 · US
Motor position control based on servo-to-edge direction feedback
US-2020350846-A1 · Nov 5, 2020 · US
Low-speed sensorless brushless motor control in a power tool
US-2020343839-A1 · Oct 29, 2020 · US
Sensorless variable conduction control for brushless motor
US-2020343840-A1 · Oct 29, 2020 · US
Dual-controller system for a sensorless brushless motor control
US-2020343838-A1 · Oct 29, 2020 · US
Brake control system and method of fault detection
US-10763765-B2 · Sep 1, 2020 · US
Control method and control system of motor rotation speed
US-10756601-B2 · Aug 25, 2020 · US
Method for calculating power supply voltage waveform, method for analyzing circuit coupled magnetic field, program and recording medium recording program
US-2020256900-A1 · Aug 13, 2020 · US
Motor control device and current ripple detection method for DC motor
US-10693399-B2 · Jun 23, 2020 · US
Motor controller and image forming apparatus
US-2020195181-A1 · Jun 18, 2020 · US
Rotor position sensing system for permanent magnet synchronous motors and related methods
US-2020195179-A1 · Jun 18, 2020 · US
Rotor position sensing system for permanent magnet synchronous motors and related methods
US-10644625-B2 · May 5, 2020 · US
Controller of rotating electric machine
US-2020136549-A1 · Apr 30, 2020 · US
Systems And Methods For Calculating Motor Position, Inertia And Rest Position In Sensorless Brushed DC Motor Control Systems
US-2020119670-A1 · Apr 16, 2020 · US
System and method for estimating rotor sensor offset
US-10608562-B1 · Mar 31, 2020 · US
Motor driving device and control method thereof
US-2020052619-A1 · Feb 13, 2020 · US
Motor control device and current ripple detection method for dc motor
US-2020044588-A1 · Feb 6, 2020 · US
Systems and methods for calculating motor position, inertia and rest position in sensorless brushed DC motor control systems
US-10536100-B2 · Jan 14, 2020 · US
Electric vehicle propulsion control device
US-2019386597-A1 · Dec 19, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02P2203/09?
- CPC H02P2203/09 is the Cooperative Patent Classification code for “Motor speed determination based on the current and/or voltage without using a tachogenerator or a physical encoder.”
- How many patents are filed under CPC H02P2203/09 (Motor speed determination based on the current and/or voltage without using a tachogenerator or a physical encoder)?
- Our database includes 107 publications tagged with this CPC code.
- Is patent activity under CPC H02P2203/09 growing?
- Publication counts under this code: 4 in 2024 vs 5 in 2025 (latest complete years).