2results about How to "Improve calibration work efficiency" patented technology

This invention provides a bus filtering method for calibration, implemented on a bus filtering device used in calibration. One end of the bus filtering device is connected to the vehicle's CAN bus, and the other end is connected to a calibration device and a CAN controller. The method includes the following steps: detecting whether a calibration message generated by the calibration device during calibration of the CAN controller is received; if a calibration message is detected, forwarding the calibration message only to the CAN controller and blocking the forwarding of the calibration message to the vehicle's CAN bus. Implementing this invention can improve the situation of calibration message loss or untimely response during vehicle calibration, thereby improving calibration efficiency.

This invention relates to the field of permanent magnet synchronous motor vector control technology, specifically to a rapid calibration method for permanent magnet synchronous motors in new energy vehicles. It includes a calibration table for the maximum torque-to-current ratio; a calibration table for the motor flux linkage; a calibration table for the motor inductance; and obtaining the target torque T. req And by consulting the calibrated lookup tables, the required d-axis current i to be output is obtained. dref and q-axis requested current i qref This method does not require the motor to operate at high speeds, reducing risks and minimizing the need for high-speed testing benches. It also offers high calibration efficiency and high control precision.