Abstract: An exception reset monitoring method for a multi-core micro control unit includes acquiring exception program information of a corresponding program exception site after detecting that one processing core in a multi-core micro control unit has entered an exception program branch; writing processing core identity information and the exception program information into a specified storage area of a non-clear random access memory. The exception reset monitoring method for a multi-core micro control unit is designed with the non-clear random access memory to allow that when an exception occurs during run of a whole program, exception information generated can be stored in a specified area of the non-clear random access memory for data protection, and data in a protected area will not be cleared during subsequent reset.

Abstract: A technical field of motor control, and a motor rotation control method and device. The method includes conducting inverse Park transformation and inverse Clark transformation to control output results of a position loop, a speed loop and a current loop to obtain SVPWM signals of a present cycle; decoupling an interrupt control cycle from a PWM signal reference channel; acquiring present position sampling information of a motor, and predicting the position sampling information to obtain position result information of a motor rotor in predicted cycles. In the motor rotation control method, an interrupt function trigger signal is added to realize decoupling from the PWM signal reference channel, so that SVPWM signal update frequency of motor control will not be affected when CPU load is reduced by adding an interrupt function scheduling cycle.

Abstract: A protocol data bit parsing method and device for an AK protocol wheel speed sensor. The method includes receiving a current signal sent by an AK protocol wheel speed sensor and converting the current signal into a first voltage signal and a second voltage signal; capturing the time of rising edges and falling edges of the first voltage signal and the second voltage signal and saving a first timestamp set and a second timestamp set; acquiring a complete set of timestamps of protocol data bits according to the first timestamp set and the second timestamp set and denoting as protocol data timestamps; and parsing the protocol data bits according to the protocol data timestamps to obtain values of the protocol data bits. The method can reduce the product cost and ensure the safety of the supply chain, which improves the competitiveness of enterprises.