To address the noise issue during the operation of dough mixers, the solution optimizes through the sinusoidal wave drive technology of PT5616, showing a clear contrast with the traditional square wave drive solution:
Traditional square wave drive solution: The measured operating noise is 65~75dB (described in the document as "obvious noise", equivalent to the noise of a vacuum cleaner at low gear);
PT2E01+PT5616 FOC solution: The measured operating noise is <55dB (described in the document as "close to the volume of daily conversation", with no obvious noise interference in home kitchen environments);
Optimization effect: The noise is reduced by 15~20dB, reaching the "quiet operation" standard, solving the problem of noise disturbance in traditional solutions.
Through the high-precision timer of PT2E01 (speed error <±1%), hardware CALC arithmetic accelerator (torque adjustment delay <10ms), and closed-loop feedback control, the improvement in dough kneading precision and motor control stability is achieved:
Speed control precision:
Traditional solution: Speed error of ±5%, prone to uneven dough kneading due to speed fluctuations (e.g., partial under-kneading, partial over-kneading);
FOC solution: Speed error <±1%, with stable motor speed throughout the process. The document clearly states that "dough uniformity is improved by 30%", meeting the kneading needs of different texture ingredients such as soft dough and hard dough.
Torque response speed:
When facing sudden changes in dough hardness (e.g., from soft dough to hard dough after adding dry flour), the motor torque adjustment delay is <10ms, with no "unable to knead" stuck or "over-kneading" phenomena, verifying the real-time performance and responsiveness of the FOC algorithm.
To address the issues of easy overheating and short lifespan of motors in traditional solutions, the solution adopts the low-loss drive design and temperature protection mechanism of PT5616. The measured data are as follows:
Motor temperature rise: The motor in the traditional solution has a relatively high temperature rise during operation (specific value not given in the document, described as "prone to overheating"); the FOC solution reduces motor loss due to sinusoidal wave drive, with a measured temperature rise reduction of 10℃, avoiding accelerated aging of the motor due to high temperature;
Motor lifespan: The average lifespan of motors in traditional solutions is 2000~3000 hours (due to accelerated winding aging caused by overheating); the average lifespan of motors in the FOC solution is >5000 hours, with a lifespan extension of over 60%, meeting the needs of "long-term high-frequency use" for household dough mixers and "long-time continuous operation" for commercial dough mixers.
Through the low-power design of PT2E01 (such as wide voltage adaptation, DMA reducing CPU load) and the efficient drive architecture of PT5616, the measured energy efficiency and standby power consumption performance are as follows:
Verification scenario: 220V mains power supply, 550W full-load operation (simulating the scenario of commercial dough mixers kneading 5~10L dough). The low-power characteristics of the FOC solution can reduce long-term electricity costs, conforming to the "energy-saving" trend of kitchen appliances.
The solution verifies common fault scenarios through the parameter sampling monitoring of PT2E01 and the multiple protection mechanisms of PT5616. The results are as follows:
Overcurrent protection: When the motor is locked due to excessively hard dough, PT5616 can quickly detect the overcurrent signal (response time not specified, described in the document as "quickly cut off the drive"), cut off the drive signal and feed back the fault to PT2E01, avoiding motor burnout or circuit board damage. The traditional solution only supports basic overcurrent protection;
Overvoltage/undervoltage protection: When simulating grid voltage fluctuations (e.g., 220V mains voltage rising to 250V or dropping to 180V), the overvoltage (OVP) and undervoltage (UVP) protection functions of PT5616 are triggered, stopping motor operation and reporting faults. The traditional solution has no such protection;
Overheating protection: When the motor winding temperature rises to the threshold due to long-time operation (specific temperature not specified in the document, 推测 the protection threshold is close to 105℃ based on the operating temperature range of -40℃~105℃), the NTC thermistor collects the temperature signal, and PT2E01 triggers shutdown protection to prevent motor damage due to overheating;
Reset protection: When simulating a sudden drop in grid voltage (e.g., recovery after a sudden power outage), the built-in POR/PDR/BOR reset protection functions of PT2E01 are triggered, avoiding program crashes and ensuring normal operation after device restart.
189 2646 8515 
+86 189 2646 8515 
Sales-net@junmintech.cn
