| The utilization of power tools in daily life and industrial production has grown exponentially due to the advancement of science and technology,thus making the construction of appropriate control systems increasingly essential.BLDC motor is widely used in power tools as a type of motor with high efficiency and energy saving.However,the traditional BLDC motor control system often has some problems,such as unstable work and high energy consumption.Therefore,how to improve the performance of BLDC motor control system and reduce energy consumption cost is the problem waiting to be solved in the field of electric tool technology research.This paper delves into the design and exploration of BLDC motor control systems for power tools,utilizing distributed battery management systems to be a major contributor to the creation of intelligent power tools.The findings of this research offer a novel concept and technique for the advancement and utilization of electric tool technology.This paper briefly introduces the fundamental mechanics of brushless DC motors,the varying stator structures that demonstrate different back electromotive force waveforms,and the brushless DC motor in conduction mode.Additionally,PWM modulation technology is discussed,and finally,the equation of motion to construct a mathematical model for voltage,torque control is outlined.A simulation model was created in the MATLAB/Simulink,and a verification of the brushless DC control system was then conducted.In addition,based on the basic modules of the BLDC control system,the reference voltage comparison method is designed to carry out the back electrodynamic force zero crossing detection,and the strategy of motor prepositioning to start and brake is introduced,and the communication protocol between the battery and the BLDC control system is designed to carry out the battery status data transmission,The power tool system’s functional requirements are the basis for the system’s hardware design..Core processors choose Fortior Tech FU6861 L chip,and modular against chip peripheral circuit structures,and design the basic work related brushless dc motor control algorithms,and design the adaptive control algorithm to optimize battery management.The simulation model,established in MATLAB/Simulink,was finally tested to determine the speed and current loops of the brushless DC control system.Waveform analysis on the physical control board was then used to validate the reliability of the BLDC system.In addition,the battery status data communication between the battery and the BLDC system is monitored by the battery management host computer in real time.The application effect of battery management in BLDC control system is verified.It has certain practical and economic value.It can effectively improve the efficiency of battery management. |
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