diff --git a/device/commands.go b/device/commands.go
index fb14a71..bba515a 100644
--- a/device/commands.go
+++ b/device/commands.go
@@ -1,80 +1,40 @@
 package device
 
 // FingerPoseCommand 手指姿态指令
-type FingerPoseCommand struct {
-	fingerID   string
-	poseData   []byte
-	targetComp string
-}
+type FingerPoseCommand struct{ poseData []byte }
 
 func NewFingerPoseCommand(fingerID string, poseData []byte) *FingerPoseCommand {
-	return &FingerPoseCommand{
-		fingerID:   fingerID,
-		poseData:   poseData,
-		targetComp: "finger_" + fingerID,
-	}
+	return &FingerPoseCommand{poseData: poseData}
 }
 
-func (c *FingerPoseCommand) Type() string {
-	return "SetFingerPose"
-}
+func (c *FingerPoseCommand) Type() string { return "SetFingerPose" }
 
-func (c *FingerPoseCommand) Payload() []byte {
-	return c.poseData
-}
-
-func (c *FingerPoseCommand) TargetComponent() string {
-	return c.targetComp
-}
+func (c *FingerPoseCommand) Payload() []byte { return c.poseData }
 
 // PalmPoseCommand 手掌姿态指令
-type PalmPoseCommand struct {
-	poseData   []byte
-	targetComp string
-}
+type PalmPoseCommand struct{ poseData []byte }
 
 func NewPalmPoseCommand(poseData []byte) *PalmPoseCommand {
-	return &PalmPoseCommand{
-		poseData:   poseData,
-		targetComp: "palm",
-	}
+	return &PalmPoseCommand{poseData: poseData}
 }
 
-func (c *PalmPoseCommand) Type() string {
-	return "SetPalmPose"
-}
+func (c *PalmPoseCommand) Type() string { return "SetPalmPose" }
 
-func (c *PalmPoseCommand) Payload() []byte {
-	return c.poseData
-}
-
-func (c *PalmPoseCommand) TargetComponent() string {
-	return c.targetComp
-}
+func (c *PalmPoseCommand) Payload() []byte { return c.poseData }
 
 // GenericCommand 通用指令
 type GenericCommand struct {
-	cmdType    string
-	payload    []byte
-	targetComp string
+	cmdType string
+	payload []byte
 }
 
 func NewGenericCommand(cmdType string, payload []byte, targetComp string) *GenericCommand {
 	return &GenericCommand{
-		cmdType:    cmdType,
-		payload:    payload,
-		targetComp: targetComp,
+		cmdType: cmdType,
+		payload: payload,
 	}
 }
 
-func (c *GenericCommand) Type() string {
-	return c.cmdType
-}
+func (c *GenericCommand) Type() string { return c.cmdType }
 
-func (c *GenericCommand) Payload() []byte {
-	return c.payload
-}
-
-func (c *GenericCommand) TargetComponent() string {
-	return c.targetComp
-}
+func (c *GenericCommand) Payload() []byte { return c.payload }
diff --git a/device/device.go b/device/device.go
index a8e2f05..64296d6 100644
--- a/device/device.go
+++ b/device/device.go
@@ -31,9 +31,8 @@ type Device interface {
 
 // Command 代表一个发送给设备的指令
 type Command interface {
-	Type() string            // 指令类型，例如 "SetFingerPose", "SetPalmAngle"
-	Payload() []byte         // 指令的实际数据
-	TargetComponent() string // 目标组件 ID
+	Type() string    // 指令类型，例如 "SetFingerPose", "SetPalmAngle"
+	Payload() []byte // 指令的实际数据
 }
 
 // SensorData 代表从传感器读取的数据