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15 November 2011The application of micro-stepping for step-motor in the automatic blood viscosity measurement
In the automatic blood viscosity measurement system, the mechanical movements of moving parts are supported by stepmotors.
The step angle of step-motor can not meet the requirements of precise positioning of parts, so the introduction of
micro-stepping method is proposed to improve accuracy. At the same time, micro-stepping improves the running
performance of step-motor. In the system adopts A3977 which has decoder inner chip drives hybrid step-motor (twophase
four-shot). The most important feature of A3977 is that it integrates hardware micro-stepping inner chip, and the
mainly electrical structure is easy. The system adopts eighth step by A3977, and uses C8051 to control enable, direction
and step of step-motor.
Wen Qu andLianqing Zhu
"The application of micro-stepping for step-motor in the automatic blood viscosity measurement", Proc. SPIE 8321, Seventh International Symposium on Precision Engineering Measurements and Instrumentation, 83210F (15 November 2011); https://doi.org/10.1117/12.903714
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Wen Qu, Lianqing Zhu, "The application of micro-stepping for step-motor in the automatic blood viscosity measurement," Proc. SPIE 8321, Seventh International Symposium on Precision Engineering Measurements and Instrumentation, 83210F (15 November 2011); https://doi.org/10.1117/12.903714