基于DSP的脉阶调制器数字控制系统

鉴于目前国内大部分无线电台的短波发射机脉阶调制器控制系统以模拟方式实现的现状,本设计方案在现有的脉阶调制器技术基础上对其控制系统进行数字化、智能化改造。基于TMS320VC33的脉阶调制器数字控制系统采用单极性三角波对称规则同步取样改进算法实现PSM PWM调制,随后又给出了开关模块循环通断的实现方案。计算机仿真结果表明,此方法易于实现,实时性好、精度高。

The Digital Control System of Impulse Ladder Modulator Based on DSP

At present,a majority of the control system of impulse ladder modulator of shortwave transmitter are based on simulation in domestic.In this paper,we rebuild it to make it intelligentize and digital referencing the technology of impulse ladder modulation in existence.The digital control system of impulse ladder modulator realizes the modulation of PSM and PWM in the betterment method of the rule of symmetry of monopole tricome,Later,there is realization project of switch module circling on-off.The computer simulation indicates that the project is feasibility and has high precision.