Motor controlling method, motor controlling system, and electronic power steering system
US-2019363658-A1 · Nov 28, 2019 · US
Stator flux based control involving the use of rotor position or rotor speed sensors
Stator flux based control involving the use of rotor position or rotor speed sensors · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02P21/12 |
| Official title | Stator flux based control involving the use of rotor position or rotor speed sensors |
| Display label | Stator flux based control involving the use of rotor position or rotor speed sensors |
| Total patents | 130 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 16 |
| 2017 | 13 |
| 2018 | 11 |
| 2019 | 19 |
| 2020 | 15 |
| 2021 | 15 |
| 2022 | 16 |
| 2023 | 6 |
| 2024 | 4 |
| 2025 | 8 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Variable frequency independent speed motor
US-2019356261-A1 · Nov 21, 2019 · US
Motor driving apparatus and home appliance including the same
US-10483893-B2 · Nov 19, 2019 · US
Method of controlling dual inverter
US-10476419-B2 · Nov 12, 2019 · US
Alternator with harmonic compensation
US-10411632-B2 · Sep 10, 2019 · US
Method for estimating the position and speed of the rotor of an alternating current machine for a motor vehicle, and corresponding system
US-2019181788-A1 · Jun 13, 2019 · US
Method and device for the cyclic digital transmission of a position value of a moving object with inertial mass
US-2019158005-A1 · May 23, 2019 · US
Starting an induction machine
US-2019140563-A1 · May 9, 2019 · US
Method for controlling the normal force of a transport unit of a long stator linear motor
US-10246266-B2 · Apr 2, 2019 · US
System and method for preventing permanent magnet demagnetization in electrical machines
US-10230321-B1 · Mar 12, 2019 · US
Force or torque control and estimation using high transparency electromechanical manipulator with only joint encoders
US-2019050005-A1 · Feb 14, 2019 · US
Method and device for the cyclic digital transmission of a position value of a moving object with inertial mass
US-10193483-B2 · Jan 29, 2019 · US
Induction Machine Having a Customized Field-Forming Current Component
US-2019006975-A1 · Jan 3, 2019 · US
Controller for power converter
US-10171019-B1 · Jan 1, 2019 · US
Variable magnetization machine controller
US-10146211-B2 · Dec 4, 2018 · US
Method and long stator linear motor for transferring a transport unit at a transfer position
US-2018323732-A1 · Nov 8, 2018 · US
Method for controlling the normal force of a transport unit of a long stator linear motor
US-2018273304-A1 · Sep 27, 2018 · US
Alternator with harmonic compensation
US-2018234043-A1 · Aug 16, 2018 · US
Method of controlling dual inverter
US-2018152127-A1 · May 31, 2018 · US
Method for reducing the noise of an electric motor
US-2018091078-A1 · Mar 29, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02P21/12?
- CPC H02P21/12 is the Cooperative Patent Classification code for “Stator flux based control involving the use of rotor position or rotor speed sensors.”
- How many patents are filed under CPC H02P21/12 (Stator flux based control involving the use of rotor position or rotor speed sensors)?
- Our database includes 130 publications tagged with this CPC code.
- Is patent activity under CPC H02P21/12 growing?
- Publication counts under this code: 4 in 2024 vs 8 in 2025 (latest complete years).