An efficient online control method of the electromagnetic damper damping coefficient is proposed to deal with the problem that the damping adjustment of damper in suspension of present new energy vehicle is complicated and energy consuming
and the vibration energy is recovered at the same time. The method uses an electromagnetic damper that consists of a DC motor and a ball screw mechanism. First
a damping adjustment circuit based on a high-frequency DC-DC converter is designed. Its output voltage is adjusted based on input voltage by adjusting the duty cycle of the PWM signal that drives the power MOSFET. Then the target electromagnetic torque is calculated during the working process of the damper
and the armature current required to reach the reference torque is calculated. On the other hand
the actual armature current is continuously collected during the working process
and the current is sent to a PI controller for PI closed-loop adjustment to output the duty cycle of the driv
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Related Institution
西安交通大学机械工程学院,710049,西安School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
金属成形技术与重型装备全国重点实验室,710049,西安State Key Laboratory of Metal Forming Technology and Heavy Equipment, Xi'an 710049, China
陕西交通职业技术学院,710018,西安Shaanxi Vocational and Technical College of Communications, Xi'an 710018, China
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