CPLD-Based Displacement Measurement System for Nanoscale Grating Ruler

Table 1

CPLD chip working parameters.

Model	Basic materials	Signal period	Frequency
Test deployment	Ceramics	0.25	−1000
Voltage	Aluminum alloy	0.33	−850
Electric current	Copper alloy	0.47	−1200
Power	Glass	0.59	−1130
Length	Steel belt	0.84	−1480