The application of micro-stepping for step-motor in the automatic blood viscosity measurement

Wen Qu; Lianqing Zhu

doi:10.1117/12.903714

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15 November 2011 The application of micro-stepping for step-motor in the automatic blood viscosity measurement

Wen Qu, Lianqing Zhu

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Proceedings Volume 8321, Seventh International Symposium on Precision Engineering Measurements and Instrumentation; 83210F (2011) https://doi.org/10.1117/12.903714
Event: Seventh International Symposium on Precision Engineering Measurements and Instrumentation, 2011, Yunnan, China

Abstract

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.

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Wen Qu and 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

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