基于脉宽脉幅混合调制技术的功耗检测电路

邢胜博; 马修泉; 王长久; 马新敏

doi:10.11884/HPLPB202335.230152

基于脉宽脉幅混合调制技术的功耗检测电路

doi: 10.11884/HPLPB202335.230152

1.
华中科技大学机械科学与工程学院，武汉 430074
2.
华中科技大学光学与电子信息学院，武汉 430074
3.
上海机电工程研究所，上海 201109

基金项目: 广东省基础与应用基础重大项目(2019B030302003)

详细信息

作者简介:
邢胜博，xingshengb@163.com

中图分类号: TM933
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- 文章访问数: 322
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- PDF下载量: 60
- 被引次数: 0
出版历程
- 收稿日期: 2023-05-29
- 修回日期: 2023-11-07
- 录用日期: 2023-10-20
- 网络出版日期: 2023-11-18
- 刊出日期: 2023-12-15

Power consumption detection circuit based on pulse width-pulse amplitude hybrid modulation strategy

1.
School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
2.
School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
3.
Shanghai Electro-Mechanical Engineering Institute, Shanghai 201109, China

摘要

摘要: 线性电源因其干扰小、动态响应速度快等优点被广泛用作半导体激光器驱动电源。针对线性电源中调整管易因功耗过大发生故障的问题，提出了一种脉宽脉幅混合调制方法，利用调整管漏源电压和漏极电流调制生成高频方波，通过平均值电路计算方波平均值，并基于此方法设计了一种调整管功耗检测电路。搭建实验平台对电路进行测试，结果表明，电路检测精度高、硬件成本低、响应速度快，最大检测误差为−2.64%，线性拟合度为0.9987，可广泛用于调整管的功耗检测以及安全区保护。
- 调整管 /
- 功耗检测 /
- 混合调制 /
- 线性电源 /
- 半导体激光器
Abstract: Linear power supply is widely used as the driving power of semiconductor laser because of its advantages such as low interference and fast dynamic response. To solve the problem that the regulating tube fails due to excessive power consumption, this paper proposes a hybrid pulse width-pulse amplitude modulation strategy, which uses the drain-source voltage and drain-current of the regulating tube to modulate high frequency square wave, and calculate the mean value of square wave, based on which the regulating tube power consumption detection circuit is designed. An experimental platform is built to test the circuit, and the results show that the circuit has the advantages of excellent detection accuracy, low hardware cost and fast response. The circuit has a maximum relative error of $- 2.64{\text{%}} $ and a linearity fit of $ 0.9987 $. It can be widely used for power consumption measurement and safety zone protection of regulating tube.
- regulating tube /
- power consumption detection /
- hybrid modulation /
- linear power supply /
- semiconductor laser

HTML全文

图 1 串联反馈式线性电流源

Figure 1. Series feedback linear current source

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图 2 高频受调方波

Figure 2. High frequency modulated square wave

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图 3 基于PWAM技术的功耗检测电路原理框图

Figure 3. Power consumption detection circuit functional block diagram based on PWAM technology

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图 4 基于PWAM技术的功耗检测电路原理图

Figure 4. Power consumption detection circuit schematic diagram based on PWAM technology

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图 5 基于PWAM技术的功耗检测验证电路

Figure 5. Power detection of verification circuit based on PWAM technology

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图 6 不同工况下调制波形

Figure 6. Modulation waveform under different working conditions

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图 7 实际功耗和检测值的线性拟合

Figure 7. Linear fitting of actual values and detected values

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表 1 不同频率下功耗检测误差分析

Table 1. Error analysis of power consumption detection at different frequencies

frequency ${f_{\mathrm{s}}}$/kHz	maximum relative error ${\delta _{\max }}$/%	mean square error (MSE)	linear fit ${R^2}$
75	−2.78	0.314	0.9965
100	−2.64	0.237	0.9987
125	−3.04	0.403	0.9788
150	−3.26	0.491	0.9617
175	−4.43	0.515	0.9478

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表 2 采样频率为100 kHz时对应的实验数据

Table 2. Experimental data corresponding to a sampling frequency of 100 kHz

drain current $ \text{ }{i}_{{\mathrm{d}}} $/A	drain source voltage $ \text{ }{v}_{{\mathrm{ds}}} $/V	true value ${P_{\mathrm{r}}}$/W	analog output ${V_{\mathrm{a}}}$/V	detected value P/W	relative error $\delta $/%
1	18.98	18.98	0.298	18.48	−2.64
2	14.96	29.92	0.476	29.44	−1.60
3	12.28	36.84	0.598	37.02	0.48
4	11.02	44.08	0.717	44.41	0.76
5	9.84	49.20	0.804	49.78	1.19
6	9.02	54.12	0.885	54.77	1.20
7	8.26	57.82	0.939	58.11	0.50
8	7.62	60.96	0.987	61.13	0.28
9	7.10	63.90	1.027	63.58	−0.50
10	6.54	65.40	1.043	64.57	−1.27
11	6.16	67.76	1.091	67.52	−0.35
12	5.68	68.16	1.084	67.11	−1.54
13	5.18	67.34	1.078	66.77	−0.85
14	4.72	66.08	1.069	66.18	0.15
15	4.36	65.40	1.070	66.22	1.26
16	4.06	64.96	1.045	64.67	−0.44
17	3.64	61.88	0.997	61.70	−0.29
18	3.26	58.68	0.943	58.36	−0.55
19	2.84	53.96	0.869	53.81	−0.28
20	2.34	46.80	0.753	46.59	−0.44

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