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A dual linear motor energy-feeding active suspension actuator and its control method

An active suspension and linear motor technology, applied in the field of vehicle dynamics, can solve the problems of easy failure and the inability of the thrust to complete the main power of the suspension, and achieve the effect of ensuring work stability, enhancing adaptive performance, and high thrust density.

Active Publication Date: 2022-08-02
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current motor actuators of various suspension systems still have problems such as failures easily in the state of long-term load work, and the common three-phase linear motors have the problem that if a phase failure occurs during operation, the thrust generated cannot complete the main function of the suspension. power control problem

Method used

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  • A dual linear motor energy-feeding active suspension actuator and its control method
  • A dual linear motor energy-feeding active suspension actuator and its control method
  • A dual linear motor energy-feeding active suspension actuator and its control method

Examples

Experimental program
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Effect test

Embodiment 1

[0034] like figure 1 As shown, a dual linear motor energy-feeding active suspension actuator includes an actuator body and a control system, characterized in that the actuator body includes an actuator outer body 2, a base 7, a rod 10. Six-phase flux linkage linear motor and three-phase permanent magnet synchronous linear motor;

[0035]The three-phase permanent magnet synchronous linear motor includes a three-phase permanent magnet synchronous linear motor primary permanent magnet 3, a three-phase permanent magnet synchronous linear motor secondary permanent magnet 4, a magnetic isolation material 6, and a secondary protective layer 16. The primary permanent magnet 3 of the permanent magnet synchronous linear motor is inlaid and installed in the outer casing 2 of the actuator. The upper and lower ends of the primary permanent magnet 3 of the three-phase permanent magnet synchronous linear motor are provided with magnetic isolation materials 6 and are arranged in a staggered m...

Embodiment 2

[0046] like image 3 As shown, a control method of a dual linear motor energy-feeding active suspension actuator, the method includes the following steps:

[0047] 1. Data collection and transmission;

[0048] 2. Calculation of ideal control force under endocrine compound PID control;

[0049] 3. Actuator is adjusted in real time.

[0050] like Figure 4 As shown, the calculation steps of the ideal control force under the control of the endocrine compound PID are as follows:

[0051] Step 1: The sprung mass acceleration sensor collects the sprung mass acceleration in real time According to PID control strategy Get the initial ideal control force F i-1 , where e(t) is the measured value of the sprung mass acceleration Difference from 0; K p is the proportional gain factor, K i is the integral gain factor, K d is the differential gain link coefficient;

[0052] Step 2: Calculate the endocrine control link according to the preliminary ideal control force obtained by...

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Abstract

The invention discloses a dual linear motor energy-feeding type active suspension actuator and a control method thereof. The actuator body comprises an outer casing of the actuator, a base, a rod, a six-phase flux linkage linear motor and a three-phase linear motor A phase permanent magnet synchronous linear motor; the control system includes an active control system and an energy recovery system, and the invention also discloses an endocrine compound PID control method. The invention combines two linear motors of different structural forms into one, the active thrust of the suspension system is provided by the six-phase flux linkage linear motor, the three-phase permanent magnet synchronous linear motor is in the energy-feeding state to recover the vibration energy, and the two different forms of The integration of the linear motor in the structure greatly compresses the space, and at the same time integrates the energy feed and active control into one, while recovering the energy, the vehicle suspension system is in the best vibration damping state, and the ride comfort and handling stability of the vehicle are improved. sex.

Description

technical field [0001] The invention belongs to the technical field of vehicle dynamics, in particular to a dual linear motor energy-feeding active suspension actuator and a control method thereof. Background technique [0002] The suspension of the vehicle is an important component that can ensure the smoothness and handling stability of the vehicle. It can elastically connect the frame and the axle, and attenuate the excitation transmitted to the body by the uneven road. At present, most of the suspensions used in vehicles are passive suspensions. Although they can effectively attenuate vibration, their stiffness and damping are fixed values ​​and cannot be adjusted according to road conditions. In addition, controllable suspension has begun to be applied to automotive suspension technology. At present, there are two main types of controllable suspension: active suspension and semi-active suspension. Active suspension can adjust the parameters of the suspension in real ti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60G17/015B60G17/018B60G17/019F16F15/00
CPCB60G17/015B60G17/018B60G17/01908F16F15/002B60G2800/20
Inventor 寇发荣景强强武江浩
Owner XIAN UNIV OF SCI & TECH
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