offline control meaning in English
脱机控制
Examples
- As a fast algorithm , the whole control system can be realized based on a dsp , but this control strategy can ’ t work under unknown load condition . according to the offline control strategy , a prototype is made in this paper
由于计算量较大,采用dsp和fpga来共同控制, dsp负责采样和计算指令电压,计算出指令电压后把指令传给fpga , svm算法在fpga内完成。 - Offline control strategy refers to work under known load condition , according to the load condition calculate the instruction voltage , then store them in the datasheet , each time read the instruction voltage from the datasheet , when input dc bus voltage changes , a pi controller is used to adjust the instruction voltage thereby fix the output voltage rms
离线型控制是指在已知负载的情况下,计算出控制用的指令电压,存在数据表中,每次读取表中的数据,当输入母线电压变化时通过pi调节调整指令电压来控制输出电压。由于计算量不大,用单片dsp就可以实现指令电压的计算和svm算法,主要用于负载情况已知且固定的场合。 - The primary measures for control precept are : sufficiently and effectively utilizing the the air compressors " interior data , realizing online surveillance and alarming for failure of the the air compressors " running interior parts ; letting the air compressors running by master and slave manner , by reasonable arranging the alignment of the air compressors , making the masters yielding pressed air and the slaves adjusting the pressure of the air . this decreases the times of loading and unloading greatly and the decreased failure of air compressors and low maintain ; at the same time we adopt abundant value of the set pressure for stabling the compressure . the air compressors become loaded or unloaded ahead by the abundant value ; caning unloading control for saving power , when the air compressors get along with unloading for a while , the system will stop them ; consummating the purposes for control , enhancing offline control for over - press and low - press , continual loading control and unloading control
经过分析研究，针对原来存在的问题，在控制方案上主要的改进措施有：充分、有效地利用了空压机的内部参数数据，对空压机的内部部件的运行情况实现了在线监视及故障报警；对空压机采用了主、辅结合的运行方式，通过对空压机加、卸载队列的合理排序，使空压机自动实现主机产气、辅机进行气压调节，减少了空压机的加载和卸载次数；在压缩空气压力的稳定上进行了裕量控制，在压缩空气压力不到供能品质所规定的上、下根就根据一定的裕量提前进行卸载和加载操作；在节约电能方面对空压机进行了卸载停机控制，当空压机在一定时间内一直处于卸载状态，系统就认为该空压机没有运行的必要，自动将其停机；完善了控制效果，增加了超压低压脱网控制、连续加载控制、连续卸载控制等功能。