基于MRAS的永磁同步電機參數(shù)在線辨識的研究
發(fā)布時間：2018-09-14 09:20
【摘要】：隨著現(xiàn)代工業(yè)的飛躍式發(fā)展,在高精度的工業(yè)控制設(shè)備中相當多的采用了永磁同步電機(PMSM)以取代寬調(diào)速的直流伺服電機,尤其是在新興能源領(lǐng)域,如電動汽車等行業(yè),永磁同步電機的應(yīng)用十分廣泛。在永磁同步電機伺服控制系統(tǒng)中,電機機械參數(shù)會隨著工況的變化而變化,這對系統(tǒng)的控制性能造成了不利的影響。因此,PMSM機械參數(shù)的在線辨識成為高精度控制的要求,并且,傳統(tǒng)的調(diào)節(jié)器因不能隨工況的改變進行參數(shù)自校正,從而使系統(tǒng)的穩(wěn)定性和抗擾性變差,因此調(diào)節(jié)器的自適應(yīng)能力也是伺服控制系統(tǒng)的發(fā)展要求。模型參考自適應(yīng)(MRAS)作為自適應(yīng)方法的一個重要分支,在工業(yè)上的應(yīng)用逐漸成熟。目前,國內(nèi)外都在積極研究將模型參考自適應(yīng)方法引入到電機控制中。模型參考自適應(yīng)的原理簡單,辨識精度高,易于實現(xiàn)。本文在充分研究模型參考自適應(yīng)理論的基礎(chǔ)上采用離散模型參考控制方案,基于MRAS展開對永磁同步電機參數(shù)在線辨識與轉(zhuǎn)速自適應(yīng)控制理論的研究。主要研究內(nèi)容如下:1、基于TI公司控制型芯片TMS320F28335設(shè)計PMSM矢量控制系統(tǒng),分別建立了電流環(huán)、速度環(huán)的控制模型,完成兩環(huán)控制器參數(shù)的設(shè)計。在系統(tǒng)硬件電路和軟件程序的基礎(chǔ)上實現(xiàn)電機參數(shù)與轉(zhuǎn)速的在線辨識。2、通過對模型參考自適應(yīng)控制系統(tǒng)的研究,采用popov超穩(wěn)定性理論設(shè)計電機的參數(shù)在線辨識規(guī)律,并在矢量控制仿真模型的基礎(chǔ)上設(shè)計了電機參數(shù)的在線辨識仿真模型。3、對比研究基于MRAS的三相PMSM速度自適應(yīng)控制系統(tǒng)。提出一種基于無位置傳感器的速度自適應(yīng)調(diào)節(jié)器設(shè)計方法,克服傳統(tǒng)位置傳感器給控制系統(tǒng)帶來的不利影響。4、搭建系統(tǒng)控制平臺,設(shè)計系統(tǒng)硬件電路與軟件程序,為系統(tǒng)實驗提供良好的環(huán)境。5、論文通過Matlab/Simulink仿真及PMSM閉環(huán)矢量控制系統(tǒng)實驗,對永磁同步電機控制系統(tǒng)進行了建模和仿真,充分證明了本文所提出的參數(shù)在線辨識算法能夠快速準確的辨識出電機機械參數(shù)及轉(zhuǎn)速,為電機控制系統(tǒng)性能的進一步提高提供了必要條件,具有十分重要的意義。
[Abstract]:With the rapid development of modern industry, permanent magnet synchronous motor (PMSM) (PMSM) is widely used in high-precision industrial control equipment to replace the wide-speed DC servomotor, especially in the field of emerging energy, such as electric vehicles, etc. Permanent magnet synchronous motor (PMSM) is widely used. In the servo control system of PMSM, the mechanical parameters of PMSM will change with the change of working conditions, which has a negative effect on the control performance of PMSM. Therefore, the on-line identification of mechanical parameters of PMSM becomes the requirement of high precision control, and the traditional regulator can not self-adjust its parameters with the change of working conditions, which makes the stability and immunity of the system worse. Therefore, the adaptive ability of regulator is also the development requirement of servo control system. As an important branch of adaptive methods, model reference adaptive (MRAS) (MRAA) is becoming more and more widely used in industry. At present, the model reference adaptive method is applied to motor control actively at home and abroad. The principle of model reference adaptive is simple, the identification accuracy is high, and it is easy to realize. In this paper, based on the study of model reference adaptive theory, the discrete model reference control scheme is adopted, and the parameters online identification and rotational speed adaptive control theory of permanent magnet synchronous motor are studied based on MRAS expansion. The main research contents are as follows: 1. Based on TI control chip TMS320F28335, the PMSM vector control system is designed. The control models of current loop and speed loop are established, and the parameters of the two loop controller are designed. On the basis of the hardware circuit and software program of the system, the on-line identification of motor parameters and rotational speed is realized. Through the research of the model reference adaptive control system, the on-line identification law of the motor parameters is designed by using the popov hyperstability theory. On the basis of vector control simulation model, the on-line identification simulation model of motor parameters. 3 is designed, and the three-phase PMSM speed adaptive control system based on MRAS is comparatively studied. This paper presents a design method of speed adaptive regulator based on sensorless position sensor, which overcomes the adverse influence of traditional position sensor on the control system. The control platform of the system is built, and the hardware circuit and software program of the system are designed. In this paper, the permanent magnet synchronous motor control system is modeled and simulated by Matlab/Simulink simulation and PMSM closed-loop vector control system experiment. It is fully proved that the proposed on-line parameter identification algorithm can quickly and accurately identify the mechanical parameters and rotational speed of the motor, which provides the necessary conditions for the further improvement of the performance of the motor control system, and has a very important significance.
【學位授予單位】：深圳大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM341
本文編號：2242286
[Abstract]:With the rapid development of modern industry, permanent magnet synchronous motor (PMSM) (PMSM) is widely used in high-precision industrial control equipment to replace the wide-speed DC servomotor, especially in the field of emerging energy, such as electric vehicles, etc. Permanent magnet synchronous motor (PMSM) is widely used. In the servo control system of PMSM, the mechanical parameters of PMSM will change with the change of working conditions, which has a negative effect on the control performance of PMSM. Therefore, the on-line identification of mechanical parameters of PMSM becomes the requirement of high precision control, and the traditional regulator can not self-adjust its parameters with the change of working conditions, which makes the stability and immunity of the system worse. Therefore, the adaptive ability of regulator is also the development requirement of servo control system. As an important branch of adaptive methods, model reference adaptive (MRAS) (MRAA) is becoming more and more widely used in industry. At present, the model reference adaptive method is applied to motor control actively at home and abroad. The principle of model reference adaptive is simple, the identification accuracy is high, and it is easy to realize. In this paper, based on the study of model reference adaptive theory, the discrete model reference control scheme is adopted, and the parameters online identification and rotational speed adaptive control theory of permanent magnet synchronous motor are studied based on MRAS expansion. The main research contents are as follows: 1. Based on TI control chip TMS320F28335, the PMSM vector control system is designed. The control models of current loop and speed loop are established, and the parameters of the two loop controller are designed. On the basis of the hardware circuit and software program of the system, the on-line identification of motor parameters and rotational speed is realized. Through the research of the model reference adaptive control system, the on-line identification law of the motor parameters is designed by using the popov hyperstability theory. On the basis of vector control simulation model, the on-line identification simulation model of motor parameters. 3 is designed, and the three-phase PMSM speed adaptive control system based on MRAS is comparatively studied. This paper presents a design method of speed adaptive regulator based on sensorless position sensor, which overcomes the adverse influence of traditional position sensor on the control system. The control platform of the system is built, and the hardware circuit and software program of the system are designed. In this paper, the permanent magnet synchronous motor control system is modeled and simulated by Matlab/Simulink simulation and PMSM closed-loop vector control system experiment. It is fully proved that the proposed on-line parameter identification algorithm can quickly and accurately identify the mechanical parameters and rotational speed of the motor, which provides the necessary conditions for the further improvement of the performance of the motor control system, and has a very important significance.
【學位授予單位】：深圳大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM341
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