Study on Inherent Vibration Characteristics and Resonance Speed of High-speed Electromechanical Transmission System for Vehicle

doi:10.12382/bgxb.2023.1149

Abstract

Abstract:

The high-speed electromechanical transmission(EMT) system for vehicle is characterized by a highly compact structure and high-speed components,leading to significant electromechanical coupling effects and susceptibility to resonance.This paper analyzes the electromechanical coupling inherent vibration characteristics of a series EMT system.An inherent vibration model of the system is derived,its natural frequencies and mode shapes are studied,and six typical vibration modes of the system are summarized based on the characteristics of each mode shape.The influences of high-speed operating conditions and electromechanical coupling effects on the system’s natural frequencies and mode shapes are investigated.The resonance speeds of the system within a wide operating speed range are studied using Campbell diagrams and modal energy method.The results indicate that the electromechanical coupling effects alter the low-frequency vibration characteristics of the system,and the high-speed operating conditions can significantly change the certain natural frequencies of the system.Both factors should be fully considered in dynamics modeling.The research of resonance speed provides a reference for the dynamic regulation and optimization of system.

Key words: high-speed electromechanical transmission system, electromechanical coupling effect, inherent vibration characteristics, high-speed operating condition, resonance speed

XIE Yunkun, LIU Hui, GAO Pu, WU Yunhao, LI Xinyi, ZHOU Ruyi. Study on Inherent Vibration Characteristics and Resonance Speed of High-speed Electromechanical Transmission System for Vehicle[J]. Acta Armamentarii, 2025, 46(1): 231149-.

Figures/Tables 19

References 29

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阶数	频率/Hz	模式	阶数	频率/Hz	模式
1	0	A	12	914	E
2	187	B	13	914	E
3	398	B	14	914	E
4	400	D	15	914	E
5	654	C	16	2220	E
6	654	C	17	2220	E
7	701	C	18	2220	E
8	701	C	19	2220	E
9	772	B	20	2905	B
10	821	C	21	2979	B
11	821	C	22	3134	F

阶数	频率/Hz	模式	阶数	频率/Hz	模式
1	0	A	12	914	E
2	187	B	13	914	E
3	398	B	14	914	E
4	400	D	15	914	E
5	654	C	16	2220	E
6	654	C	17	2220	E
7	701	C	18	2220	E
8	701	C	19	2220	E
9	772	B	20	2905	B
10	821	C	21	2979	B
11	821	C	22	3134	F

固有频率阶数	固有频率/Hz
固有频率阶数	考虑机电磁耦合	不考虑机电磁耦合
1	25	0
2	189	187
3	398	398
4	400	400
5	626	654
6	626	654
7	667	701
8	667	701
9	772	772
10	821	821

固有频率阶数	固有频率/Hz
固有频率阶数	考虑机电磁耦合	不考虑机电磁耦合
1	25	0
2	189	187
3	398	398
4	400	400
5	626	654
6	626	654
7	667	701
8	667	701
9	772	772
10	821	821

共振转速/(r·min^-1)	固有频率/Hz	激励频率成分
750	ω₁	2f_s1、2f_s3
950	ω₉,ω₁₀,ω₁₁	2f_m-PG1、2f_m-PG3
1500	ω₁	f_s1、f_s3
1900	ω₉,ω₁₀,ω₁₁	f_m-PG1、f_m-PG3
2300	ω₃,ω₄	2f_m-PG5、2f_m-PG6
3450	ω₂₀	2f_m-PG1、2f_m-PG3
4550	ω₃,ω₄,ω₉,ω₁₀,ω₁₁	f_m-PG5、f_m-PG6 2f_m-PG5、2f_m-PG6
5250	ω₁₂,ω₁₃,ω₁₄,ω₁₅	2f_m-PG5、2f_m-PG6
5650	ω₂	2f_s1、2f_s3
6900	ω₂₀	f_m-PG1、f_m-PG3
9150	ω₉,ω₁₀,ω₁₁	f_m-PG5、f_m-PG6
10450	ω₁₂,ω₁₃,ω₁₄,ω₁₅	f_m-PG5、f_m-PG6
11350	ω₂	f_s1、f_s3