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Design and Implementation of Torque Control and Estimation for an Electric Hand-Tool

Tian-Hua Liu, Cheng-Wei Peng

Abstract


This paper proposes the design and implementation of torque control and torque estimation for an electric hand-tool. This hand-tool does not require any torque transducer or any Hall-effect sensor. Only some low-cost resistances are used to measure the stator currents of a brushless DC motor, which is used to drive the hand-tool. Novel 3-phase current commands are proposed here to obtain greater torque than traditional 3-phase, square-wave current commands. The output torque of the hand-tool can be estimated and displayed by an LED display. A PI controller is used to achieve the current-loop control. A digital signal processor, TMS-320-F2808 that was manufactured by Texas Instruments, is used to execute the control and estimation algorithms. Experimental results show the correctness and feasibility of the proposed methods.


Keywords


Brushless DC Motor; Electric Hand-Tool; Torque Estimation; Digital Signal Processor

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References


Huang SJ, Huang KC, Huang TC, et al. Design of hybrid power supply system with energy regulation capability for hand-held tools. IEEE Trans. Ind. Electron. 2017; 64(2): 1148-1156.

Hesmondhalgh DE, Wain EA. Low-speed motorized dental handpiece. IEE Electric Power Appl. 1978; 1(3): 65-71. doi: 10.1049/ij-epa.1978.0012.

Hesmondhalgh DE, Tipping D, Amrani M. Design and construction of a high-speed high-performance direct-drive handpiece. IEE Proceedings1987; 134(6): 286-296. doi: 10.1049/ip-b:19870046.

Mecrow BC, Jack AG, Atkinson DJ, et al. High torque machines for power hand tool applications. IEEE PEMD 2002; 644-649. doi: 10.1049/cp:20020192.

Koinuma K, Aiso K, Akatsu K. A novel self cooling SRM for electric hand-tools. IEEE ECCE 2018; 6116-6120. doi: 10.1109/ECCE.2018.8557901.

Sathyan A, Milivojevic N, Lee YJ, et al. An FPGA-based novel digital PWM control scheme for BLDC motor drives. IEEE Trans. Ind. Electron. 2009; 56(8): 3040-3049. doi: 10.1109/tie.2009.2022067.

Shanmugasundram R, Zakariah KM, Yadaiah N. Implementation and performance analysis of digital controllers for brushless DC motor drives. IEEE/ASME Trans. on Mechatron. 2014; 19(1): 231-224. doi: 10.1109/TMECH.2012.2226469.

Han Q, Samoylenko N, Jatskevich J. Comparison of brushless DC motor drives with 180/120-degree inverter systems. IEEE CCECE 2007; 111-114. doi: 10.1109/CCECE.2007.35.

Krishnan R. Electric motor drives: Modeling, analysis, and control. London, UK: Prentice Hall; 2001.

Miller TJE. Brushless permanent-magnet and reluctance motor drives. Oxford, UK: Clarendon Press; 1989. doi: 10.1049/pe:19900006.

Kenjo T, Nagamori S. Permanent-magnet and brushless DC motors. Oxford, UK: Clarendon Press; 1985.

Krishnan R. Permanent magnet synchronous and brushless DC motor drives. NW, USA: CRC Press; 2010.

Bose BK. Modern power electronics and AC drives. NJ, USA: Prentice Hall; 2001.

Texas Instruments. TMS320x280xDigital Signal Processors; 2002.

Texas Instruments. TMS320x280X DSP Analog to Digital Converter; 2004.

Texas Instruments. TMS320x280x Enhanced Controller Area Network; 2002.




DOI: https://doi.org/10.18282/fme.v2i2.801

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