Abstract:
There are provided a method and an interface system for Bidirectional Synchronous Serial (BISS) protocol data decoding. The method includes: an MA drive module receiving an enable signal en and transmitting an MA clock signal to an SL receiving module, and then the SL receiving module detecting a trigger signal of SL; when a start bit of the SL is detected by the SL receiving module, the SL receiving module reading SL data; after the SL data is read, the SL receiving module transmitting a done signal to the MA drive module to stop operation of the MA drive module and transmitting a did signal to a CRC check module; and after the did signal is received by the CRC check module, the CRC check module performing CRC check on the SL data and outputting a correct position value after the check is completed.
Abstract:
A method of assisted mounting and error compensation for absolute grating ruler comprises: (1) when mounting a CMOS sensor and a grating ruler body, the CMOS sensor reads an upper and a lower sample windows, and due to an angle existing between the grating ruler body and the CMOS sensor, a difference exists between the numbers of the upper and lower sample windows, and by continually adjusting the grating ruler body or the CMOS sensor, the code reading difference minimized so that the angle is zeroed; (2) when mounting the grating ruler body and a mechanic housing, it is moved by a fixed displacement in a motion direction, and a grating encoding reading is recorded and an error compensating amount is obtained which serves as error compensation value in an actual motion to correct a cumulative error introduced by the angle between the grating ruler body and the motion direction.
Abstract:
The present invention is a method of assisted mounting and error compensation for absolute grating ruler. It comprises the following: (1) when mounting a CMOS sensor and a grating ruler body, the CMOS sensor reads an upper and a lower sample windows, and due to an angle existing between the grating ruler body and the CMOS sensor, a difference exists between the numbers of the upper and lower sample windows, and by continually adjusting the grating ruler body or the CMOS sensor, the code reading difference is made minimal so that the angle existing between the grating ruler body and the CMOS sensor is zeroed; (2) when mounting the grating ruler body and a mechanic housing, it is moved by a fixed displacement in a motion direction, and a grating encoding reading is recorded and an error compensating amount is obtained which serves as error compensation value in an actual motion to correct a cumulative error introduced by the angle between the grating ruler body and the motion direction. The invention may automatically calculate the deviation angles between the CMOS sensor and the grating ruler body and correct parallelism errors. Meanwhile, it also provides an error compensation in the case that the parallelism errors between the grating ruler body and the reference direction cannot be corrected.