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[Feature] 支持 无感 吗? #10

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mikewen opened this issue Jun 10, 2022 · 4 comments
Open
2 tasks done

[Feature] 支持 无感 吗? #10

mikewen opened this issue Jun 10, 2022 · 4 comments

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@mikewen
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mikewen commented Jun 10, 2022

Verify steps

Description

有没有可能支持无感? sensorless FOC

Possible Solution

No response

@ZhuYanzhen1
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Verify steps

* [x]   我已经在 [Issue Tracker](%E2%80%A6%E2%80%A6/) 中找过我要提出的请求 I have searched on the [issue tracker](%E2%80%A6%E2%80%A6/) for a related feature request.

* [x]   我已经仔细看过 [Documentation](https://github.com/ZhuYanzhen1/miniFOC/wiki) 并无法自行解决问题 I have read the [documentation](https://github.com/ZhuYanzhen1/miniFOC/wiki) and was unable to solve the issue.

Description

有没有可能支持无感? sensorless FOC

Possible Solution

No response

目前还不支持无感,后续可以考虑增加这个feature。原因是无感并不适合低速场景,而本miniFOC项目主要是为低速如关节电机场景设计的。

@ZhuYanzhen1
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miniFOC v2.0.2版本即将支持无感,请关注dev分支。

@microcai
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在这种低速的场合,无感的成本反而会更高。虽然违反直觉,但是这就是试试。无感方案需要添加3个电流采用放大器。还需要升级 mcu 要有足够的算力。 这些升级的成本反而远超一个编码器的成本。

@ZhuYanzhen1
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在这种低速的场合,无感的成本反而会更高。虽然违反直觉,但是这就是试试。无感方案需要添加3个电流采用放大器。还需要升级 mcu 要有足够的算力。 这些升级的成本反而远超一个编码器的成本。

不一定。低速可以用高频注入的方法实现,可以在不增加任何电路的情况下做到低速无感。同时MCU算力其实并不需要非常高。就miniFOC v2使用的CH32V203这颗MCU而言,做了定点计算优化之后的算法做一次闭环的计算耗时在4us左右,绰绰有余了。

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