fix(voice_main): pass actual current_pos to execute_pick/execute_lift; add requirements.txt

- Closes #3: execute_pick and execute_lift now accept an optional
  current_pos parameter. Callers (execute_command) pass self.current_pos
  so move_line starts from the actual arm position rather than a hardcoded
  [120, 0, 60] default. Falls back to rest position when None.
- Closes #4: add requirements.txt with correct package names.
  Note: README listed 'openai-whisper' but the code imports faster_whisper;
  requirements.txt uses the correct 'faster-whisper' package name.
- Replace all `servo_buffer = []` assignments with `.clear()` to stay
  compatible with the deque introduced in PR #8 (#6 follow-up).
- Partial #5: translate Chinese print/comment strings to English in
  execute_pick, execute_lift, and execute_command.

requirements.txt

@@ -0,0 +1,33 @@
+# Robot Arm Voice Control System - Dependencies
+# Python 3.10+ required
+#
+# GPU acceleration (CUDA 11.8 / 12.x) is strongly recommended.
+# Install PyTorch with CUDA from: https://pytorch.org/get-started/locally/
+# Example (CUDA 12.1):
+#   pip install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cu121
+
+# --- Core scientific stack ---
+numpy>=1.24
+scipy>=1.11
+
+# --- Serial communication ---
+pyserial>=3.5
+
+# --- Computer vision ---
+opencv-python>=4.8
+ultralytics>=8.0          # YOLOv8
+
+# --- Audio ---
+sounddevice>=0.4.6
+
+# --- Speech recognition ---
+faster-whisper>=1.0.0     # NOTE: this is faster-whisper, NOT openai-whisper
+
+# --- LLM inference ---
+torch>=2.0                # install with CUDA wheels from pytorch.org
+transformers>=4.40
+accelerate>=0.27
+peft>=0.10                # LoRA adapter loading
+
+# --- Visualization (arm_main.py demo) ---
+matplotlib>=3.7

voice_main.py

@@ -500,9 +500,17 @@ class AutoGraspSystem:
             return rx, ry
         return None
 
-    def execute_pick(self, rx, ry):
-        """执行抓取动作"""
-        print(f"\n>>> 执行抓取: ({rx:.1f}, {ry:.1f})")
+    def execute_pick(self, rx, ry, current_pos=None):
+        """Execute pick action: move to target (rx, ry) and grasp.
+
+        Args:
+            rx, ry: robot-frame target coordinates (mm)
+            current_pos: actual current end-effector position (mm, [x, y, z]).
+                         Falls back to default rest position if None.
+        """
+        if current_pos is None:
+            current_pos = np.array([120.0, 0.0, 60.0])
+
         Z_HOVER = 120.0
         Z_GRAB = -15.0
         Z_AFTER_PICK = 50.0
@@ -511,67 +519,62 @@ class AutoGraspSystem:
         p_down = np.array([rx, ry, Z_GRAB])
         p_after = np.array([rx, ry, Z_AFTER_PICK])
 
-        # 张开夹爪
+        print(f"\n[Pick] target=({rx:.1f}, {ry:.1f}), from={current_pos}")
+
         self.arm.gripper_control(70)
         self.gripper_closed = False
         time.sleep(0.3)
 
-        # 【修复】清空缓冲区，确保新动作不受之前状态影响
-        self.arm.servo_buffer = []
+        self.arm.servo_buffer.clear()
 
-        # 【修复】使用 move_line 从当前位置移动到目标上方（更可靠）
-        # 先获取当前位置的近似值
-        current_approx = np.array([120.0, 0.0, 60.0])  # 默认休息位置
-        self.arm.move_line(current_approx, p_up, p_start=-60, p_end=-60, duration=1.5)
-        
-        # 下降抓取
+        self.arm.move_line(current_pos, p_up, p_start=-60, p_end=-60, duration=1.5)
         self.arm.move_line(p_up, p_down, p_start=-60, p_end=-90, duration=1.5)
 
-        # 闭合夹爪
         self.arm.gripper_control(120)
         self.gripper_closed = True
         time.sleep(0.5)
 
-        # 抬起
         self.arm.move_line(p_down, p_after, p_start=-90, p_end=-60, duration=1.0)
 
         return p_after
 
-    def execute_lift(self, rx, ry, height):
-        """执行抓取并抬起到指定高度"""
-        print(f"\n>>> 执行抬起: 目标({rx:.1f}, {ry:.1f}), 高度{height}mm")
+    def execute_lift(self, rx, ry, height, current_pos=None):
+        """Execute pick-and-lift: grasp target and raise by `height` mm.
+
+        Args:
+            rx, ry: robot-frame target coordinates (mm)
+            height: lift distance above grab point (mm)
+            current_pos: actual current end-effector position (mm, [x, y, z]).
+                         Falls back to default rest position if None.
+        """
+        if current_pos is None:
+            current_pos = np.array([120.0, 0.0, 60.0])
+
         Z_HOVER = 120.0
         Z_GRAB = -15.0
 
         p_up = np.array([rx, ry, Z_HOVER])
         p_down = np.array([rx, ry, Z_GRAB])
-        p_lifted = np.array([rx, ry, Z_GRAB + height])
-        p_lifted[2] = np.clip(p_lifted[2], -20, 200)
+        p_lifted = np.array([rx, ry, np.clip(Z_GRAB + height, -20, 200)])
+
+        print(f"\n[Lift] target=({rx:.1f}, {ry:.1f}), height={height}mm, from={current_pos}")
 
-        # 张开夹爪
         self.arm.gripper_control(70)
         self.gripper_closed = False
         time.sleep(0.3)
 
-        # 【修复】清空缓冲区
-        self.arm.servo_buffer = []
+        self.arm.servo_buffer.clear()
 
-        # 【修复】使用 move_line 移动到目标上方
-        current_approx = np.array([120.0, 0.0, 60.0])
-        self.arm.move_line(current_approx, p_up, p_start=-60, p_end=-60, duration=1.5)
-        
-        # 下降抓取
+        self.arm.move_line(current_pos, p_up, p_start=-60, p_end=-60, duration=1.5)
         self.arm.move_line(p_up, p_down, p_start=-60, p_end=-90, duration=1.5)
 
-        # 闭合夹爪
         self.arm.gripper_control(120)
         self.gripper_closed = True
         time.sleep(0.5)
 
-        # 抬起到指定高度
         self.arm.move_line(p_down, p_lifted, p_start=-90, p_end=-60, duration=1.5)
 
-        print(f"✓ 已抬起到高度: Z={p_lifted[2]:.1f}mm")
+        print(f"[OK] Lifted to Z={p_lifted[2]:.1f}mm")
         return p_lifted
 
     def execute_release(self):
@@ -598,7 +601,7 @@ class AutoGraspSystem:
         p_drop = np.array([current_pos[0], current_pos[1], Z_TABLE])
         
         # 【修复】清空缓冲区
-        self.arm.servo_buffer = []
+        self.arm.servo_buffer.clear()
         
         # 移动到放置点
         # 注意：如果当前已经在桌面高度以下，不要强行移动，或者先抬升? 
@@ -624,7 +627,7 @@ class AutoGraspSystem:
         time.sleep(0.3)
         
         # 【修复】清空缓冲区
-        self.arm.servo_buffer = []
+        self.arm.servo_buffer.clear()
         
         # 【修复】使用 move_line 移动（更可靠）
         # 从一个安全的中间位置开始
@@ -757,12 +760,11 @@ class RobotApp:
             pos = self.grasp_sys.find_target(target)
             if pos:
                 rx, ry = pos
-                # 【修复】使用正确的方法名
-                self.current_pos = self.grasp_sys.execute_lift(rx, ry, height)
-                print(f"✓ 已抬起 {target}，当前位置: {self.current_pos}")
+                self.current_pos = self.grasp_sys.execute_lift(rx, ry, height, current_pos=self.current_pos)
+                print(f"[OK] Lifted {target}, pos={self.current_pos}")
             else:
-                print(f"✗ 未找到目标: {target}")
-                print(f"  当前可见目标: {list(self.grasp_sys.detected_targets.keys())}")
+                print(f"[Error] Target not found: {target}")
+                print(f"  Visible: {list(self.grasp_sys.detected_targets.keys())}")
 
         elif action == "pick":
             target = cmd.get("target", "part")
@@ -770,12 +772,11 @@ class RobotApp:
             pos = self.grasp_sys.find_target(target)
             if pos:
                 rx, ry = pos
-                # 【修复】使用正确的方法名
-                self.current_pos = self.grasp_sys.execute_pick(rx, ry)
-                print(f"✓ 已抓取 {target}，当前位置: {self.current_pos}")
+                self.current_pos = self.grasp_sys.execute_pick(rx, ry, current_pos=self.current_pos)
+                print(f"[OK] Picked {target}, pos={self.current_pos}")
             else:
-                print(f"✗ 未找到目标: {target}")
-                print(f"  当前可见目标: {list(self.grasp_sys.detected_targets.keys())}")
+                print(f"[Error] Target not found: {target}")
+                print(f"  Visible: {list(self.grasp_sys.detected_targets.keys())}")
                 
         elif action == "move_inc":
             axis = cmd.get("axis", "z")
@@ -816,7 +817,7 @@ class RobotApp:
             dist = 30.0
             
             # 清空缓冲，确保动作连贯
-            self.grasp_sys.arm.servo_buffer = []
+            self.grasp_sys.arm.servo_buffer.clear()
             
             for i in range(3):
                 # 向上
@@ -841,7 +842,7 @@ class RobotApp:
             dist = 30.0
             
             # 清空缓冲
-            self.grasp_sys.arm.servo_buffer = []
+            self.grasp_sys.arm.servo_buffer.clear()
             
             for i in range(3):
                 # 向左 (y增加是左)