PX4-Autopilot/docs/zh/concept/pwm_limit.md
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Signed-off-by: Ramon Roche <mrpollo@gmail.com>
Co-authored-by: Ramon Roche <mrpollo@gmail.com>
2025-03-13 16:08:27 +11:00

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# PWM_limit 状态机
The`PWM_limit State Machine` controls PWM outputs as a function of pre-armed and armed inputs.
并且会在解锁指令发出后、飞机油门增加之前引入一个延时。
## 总览
**Inputs**
- 解锁armed模式宣告允许执行危险的动作指令如转动螺旋桨。
- pre-armed: asserted to enable benign behaviors such as moving control surfaces
- this input overrides the current state
- assertion of pre-armed immediately forces behavior of state ON, regardless of current state
- deassertion of pre-armed reverts behavior to current state
**States**
- INIT 和 OFF
- pwm 输出设置为锁定状态的值。
- RAMP
- pwm outputs ramp from disarmed values to min values.
- 打开
- 根据实际控制量设定 pwm 的输出值。
## 状态转移图
![PWM Limit state machine diagram](../../assets/diagrams/pwm_limit_state_diagram.svg)