diff --git a/selfdrive/thermald/fan_controller.py b/selfdrive/thermald/fan_controller.py
index 19c3292c..6609e100 100755
--- a/selfdrive/thermald/fan_controller.py
+++ b/selfdrive/thermald/fan_controller.py
@@ -28,10 +28,13 @@ class TiciFanController(BaseFanController):
       self.controller.reset()
 
     error = 70 - cur_temp
-    fan_pwr_out = -int(self.controller.update(
-                      error=error,
-                      feedforward=interp(cur_temp, [60.0, 100.0], [0, -100])
-                    ))
+    # fan_pwr_out = -int(self.controller.update(
+    #                   error=error,
+    #                   feedforward=interp(cur_temp, [60.0, 100.0], [0, -100])
+    #                 ))
+    fan_pwr_out = int(interp(cur_temp, [60.0, 80.0], [0, 65]))
+    # 确保风扇功率在 0 到 65 之间
+    fan_pwr_out = max(0, min(65, fan_pwr_out))
 
     self.last_ignition = ignition
     return fan_pwr_out