A Tm laser pumped Mid-IR all solid-state laser is reported. A thulium laser is used to directly drive a ZnGeP2 optical parametric oscillator (OPO) with 1.99μm output to generate the 3~5μm wavelength. Diode pumped Tm...
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A Tm laser pumped Mid-IR all solid-state laser is reported. A thulium laser is used to directly drive a ZnGeP2 optical parametric oscillator (OPO) with 1.99μm output to generate the 3~5μm wavelength. Diode pumped Tm:YAP laser operates on 1.99μm, repetition frequency of 10KHz, the optical to optical conversion efficiency is 28%. The all solid-state Mid-IR laser runs at room temperature and achieves over 1W at 3~5μm with an optical to optical conversion efficiency of 5.4% starting from the pump diode.
Two-dimensional fuzzy temperature controller was used in the system of inverter air-conditioner to control the room temperature. Self-adjustment PID fuzzy controller was proposed to realize real-time control funct...
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Two-dimensional fuzzy temperature controller was used in the system of inverter air-conditioner to control the room temperature. Self-adjustment PID fuzzy controller was proposed to realize real-time control function. V / F control mode was used to compensate with low voltage, the average sampling algorithm was proposed to implement SPWM waveform modulation. Finally, the feasibility of self-adjustment PID fuzzy controller was verified by simulation, the actual operation results had proved that self-adjustment PID fuzzy controller had reliable, good output waveform and small harmonic wave, which could meet operational requirements of inverter air-conditioner.
Two-dimensional fuzzy temperature controller was used to control the room temperature in the system of inverter air-conditioner,self-adjustment PID fuzzy controller was proposed to realize the function of real-time **...
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ISBN:
(纸本)9781612848334
Two-dimensional fuzzy temperature controller was used to control the room temperature in the system of inverter air-conditioner,self-adjustment PID fuzzy controller was proposed to realize the function of real-time *** control mode of V /F was used to compensate with low *** average sampling algorithm was proposed to implement SPWM waveform ***,the feasibility of selfadjustment PID fuzzy controller was verified by simulation *** actual operation results had proved that selfadjustment PID fuzzy controller had reliable,good output waveform and small harmonic wave,which could meet operational requirements of inverter air-conditioner.
In this paper, the system of variable frequency speed-regulation based on PLC was proposed. Firstly, the overall structure of control system was determined. Inverter and programmable logic controller were chosen to co...
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In this paper, the system of variable frequency speed-regulation based on PLC was proposed. Firstly, the overall structure of control system was determined. Inverter and programmable logic controller were chosen to complete variable frequency speed-regulation. Secondly, parameters of inverter were set by develop system hardware. PLC drive selection and I/0 points distribution were completed; rotary encoder was connected with PLC interface. Finally, the software flow charts and ladder programs were designed by analysis of elevator system on the basis of software design methods.
Introduced the rule of choosing second harmonic generation (SHG) crystals, designed a TEA CO 2 laser SHG path using ZGP, studied the thermal load of ZGP and optimized the parameter.
Introduced the rule of choosing second harmonic generation (SHG) crystals, designed a TEA CO 2 laser SHG path using ZGP, studied the thermal load of ZGP and optimized the parameter.
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