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Peter51 hat geschrieben: Di 22. Apr 2025, 20:19 Ich gehe davon aus, dass der Motor mit Votol Controller über Hallsensoren kommutiert wird. Das Schaltbild und die Kabelfarben sprechen dafür? Screenshot 2025-04-22 at 20-00-53 mt_s01_20my22_esp_20_20manual_20de_20taller_20s01_20my22_20_y_20versiones-8.pdf.png
Üblicherweise sitzen die Hallsensoren auf den Polschuhen bzw. dazwischen. Ich kann aber keine erkennen. Die Motorwelle bzw. die Platine kann sich nicht drehen.
Ist der kleine Nabendeckel ein Magnet?

To emulate block commutation for brushless DC (BLDC) motors, you need an encoder chip that can generate standard U/V/W commutation signals, typically used to drive the motor's stator windings based on rotor position. Based on available solutions, one suitable encoder chip is the iC-MH8 from iC-Haus. Here's an overview:
iC-MH8 Encoder Chip

Description: The iC-MH8 is a highly flexible, single-chip magnetic encoder IC designed for motor control applications, including BLDC motor commutation. It integrates a Hall sensor array with signal amplification and provides programmable commutation outputs.
Key Features:
Generates U/V/W commutation signals for BLDC motor control, emulating block commutation.
Supports incremental (A/B/Z) and absolute position outputs via SSI/BiSS interface.
Includes differential sine/cosine outputs (1 Vpp) and integrated RS422 line drivers.
Programmable resolution up to 8-bit for precise commutation and positioning.
Operates with a diametrically magnetized permanent magnet, making it robust for industrial environments.
Wide operating temperature range: -40°C to +125°C.
Low power consumption with a single 3.3V to 5V supply.
Configurable via an SPI-compatible interface for flexible setup.
Applications: Ideal for industrial motor control, automation, robotics, and automotive applications (e.g., electronic power steering).
Why Suitable for Block Commutation Emulation: The iC-MH8 directly outputs U/V/W signals, which are compatible with the six-step (trapezoidal) commutation process used in block commutation. Its programmable nature allows alignment with motor pole pairs (e.g., 2, 4, 6, 8, 10, etc.), simplifying integration.

How It Works
The iC-MH8 uses a Hall sensor array to detect the magnetic field of a rotating magnet attached to the motor shaft. It processes these signals to produce U/V/W outputs, which emulate the commutation signals typically provided by Hall-effect sensors in BLDC motors. These signals control the motor driver to energize the appropriate stator windings, ensuring smooth rotation. The chip's programmability allows fine-tuning of the commutation offset, reducing setup time compared to traditional optical encoders.
Availability

Available through distributors like DigiKey or directly from iC-Haus.
For detailed specifications, check the iC-Haus website: www.ichaus.com.

Alternative Option
If you prefer a capacitive-based solution, consider the CUI Devices AMT33 Series:

Generates U/V/W signals for BLDC commutation.
Supports shaft sizes from 9 mm to 15.875 mm and resolutions from 48 to 4096 PPR.
Features a One Touch Zero™ function for quick alignment, reducing assembly time.
Robust against dirt, dust, and oil, with a compact 42.3 x 42.3 x 13.5 mm package.
Pricing starts at ~$32.67 for 50 units through distributors.

Recommendation
The iC-MH8 is a strong choice for its single-chip integration, magnetic sensing, and programmability, making it ideal for emulating block commutation in BLDC motors. If your application involves larger shafts or requires capacitive sensing, the AMT33 is a viable alternative. For precise selection, confirm your motor's pole pair count and environmental conditions, and consult the datasheets for compatibility.
If you need further details, a specific motor context, or help with implementation, let me know!