Control method and device for independent suspension frame front wheel swing vibration
A technology of independent suspension and control method, applied in suspension, elastic suspension, transportation and packaging, etc., to reduce the probability of occurrence, improve handling stability and comfort, and reduce shimmy
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no. 1 example
[0056] See figure 1 , The figure shows the structure diagram of the double wishbone independent suspension of an automobile. The double wishbone independent suspension is composed of five components, namely: frame 1, lower control arm 2, steering knuckle 3, steering tie rod 4 and upper control arm 5.
[0057] In this embodiment, the above-mentioned double wishbone independent suspension is taken as an example to illustrate the control method of the front wheel shimmy of the independent suspension in this embodiment, see figure 2 , The control method includes:
[0058] S201. Based on the gyro effect theory, establish an analysis model for the front wheels of the independent suspension.
[0059] In this embodiment, the gyro effect is determined by the suspension system itself and is a non-faulty cause of front wheel shimmy. In this step, the gyro effect is applied to the independent suspension, and the gyro effect is analyzed to produce high-speed car front wheel shimmy. The mechanis...
no. 2 example
[0071] See Figure 3 ~ Figure 4 , image 3 Shows the analysis model based on the theory of gyro effect, taking the left front wheel as an example, Figure 4 Another flow chart of the method for controlling front wheel shimmy of an independent suspension is shown in, which includes the following steps:
[0072] S401. Establish a spatial three-dimensional coordinate system of the analysis model.
[0073] In this embodiment, establishing the spatial three-dimensional coordinate system of the analysis model includes the following steps:
[0074] S4011. Take the intersection of the kingpin axis and the wheel rotation axis as the origin of the coordinate. If the kingpin axis and the wheel rotation line are straight lines with different planes, the kingpin axis is translated along the front and rear directions of the car to intersect the wheel rotation axis, and the intersection point is selected as the coordinate origin.
[0075] The above-mentioned kingpin refers to the steering axis of t...
no. 3 example
[0113] See Image 6 , The figure shows a schematic structural diagram of the control device for front wheel shimmy of an independent suspension, the control device includes:
[0114] Analysis module 601: used to establish an analysis model of the front wheel of an independent suspension based on the gyro effect theory;
[0115] Optimization module 602: used to optimize the hard points of the independent suspension and steering system related to the gyro effect according to the analysis model.
[0116] The analysis module 601 includes: a coordinate establishment unit 6011, a first calculation unit 6012, a second calculation unit 6013, and a third calculation unit 6014.
[0117] In this embodiment, the coordinate establishing unit 6011 is used to establish the spatial three-dimensional coordinate system of the analysis model, which specifically includes:
[0118] Origin subunit 60111: used to take the intersection of the kingpin axis and the wheel rotation axis as the coordinate origin. I...
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