In addition, a variable rate sprayer, consisted of PWM solenoids, a pressure controller, a nozzle control system interfaced to a computer, and map based application software, was also developed.
另外，还开发了一种由脉宽调节管（PWM）、压力控制器、由电脑设定的喷嘴控制系统和基于含量分布图的应用软件组成的变量控制系统。
The design adopts 2407DSP chip of TI Company to realize numerical control of PWM rectifier double closed-loop, and to realize software design to receive preliminary result.
采用TI公司的2407 DSP芯片实现PWM整流器双闭环数字控制，并进行软件设计，得到了初步的结果。
Choose the control circuit with the digital system based on DSP, particularly present the realization method of phase-shifted PWM and software flow chart of the control system.
控制电路采用基于DSP的数字化控制系统，详细给出了移相pwm的实现原理和控制系统的软件流程图。
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