diff --git a/src/unitree_rl/include/unitree_rl.hpp b/src/unitree_rl/include/unitree_rl.hpp
index 60be355..e791078 100644
--- a/src/unitree_rl/include/unitree_rl.hpp
+++ b/src/unitree_rl/include/unitree_rl.hpp
@@ -12,45 +12,46 @@
 class Unitree_RL : public Model
 {
 public:
+    Unitree_RL();
+    void modelStatesCallback(const gazebo_msgs::ModelStates::ConstPtr &msg);
+    void jointStatesCallback(const sensor_msgs::JointState::ConstPtr &msg);
+    void cmdvelCallback(const geometry_msgs::Twist::ConstPtr &msg);
+    void runModel(const ros::TimerEvent &event);
+    torch::Tensor forward() override;
+    torch::Tensor compute_observation() override;
 
-  Unitree_RL();
-  void modelStatesCallback(const gazebo_msgs::ModelStates::ConstPtr& msg);
-  void jointStatesCallback(const sensor_msgs::JointState::ConstPtr& msg);
-  void cmdvelCallback(const geometry_msgs::Twist::ConstPtr& msg);
-  void runModel(const ros::TimerEvent& event);
-  torch::Tensor forward() override;
-  torch::Tensor compute_observation() override;
-
-  ObservationBuffer history_obs_buf;
-  torch::Tensor history_obs;
+    ObservationBuffer history_obs_buf;
+    torch::Tensor history_obs;
 
 private:
+    std::string ros_namespace;
 
-  std::string ros_namespace;
+    std::vector<std::string> torque_command_topics;
 
-  std::vector<std::string> torque_command_topics;
+    ros::Subscriber model_state_subscriber_;
+    ros::Subscriber joint_state_subscriber_;
+    ros::Subscriber cmd_vel_subscriber_;
 
-  ros::Subscriber model_state_subscriber_;
-  ros::Subscriber joint_state_subscriber_;
-  ros::Subscriber cmd_vel_subscriber_;
+    std::map<std::string, ros::Publisher> torque_publishers;
+    std::vector<unitree_legged_msgs::MotorCmd> torque_commands;
 
-  std::map<std::string, ros::Publisher> torque_publishers;
-  std::vector<unitree_legged_msgs::MotorCmd> torque_commands;
+    geometry_msgs::Twist vel;
+    geometry_msgs::Pose pose;
+    geometry_msgs::Twist cmd_vel;
 
-  geometry_msgs::Twist vel;
-  geometry_msgs::Pose pose;
-  geometry_msgs::Twist cmd_vel;
+    std::vector<std::string> joint_names;
+    std::vector<double> joint_positions;
+    std::vector<double> joint_velocities;
 
-  std::vector<std::string> joint_names;
-  std::vector<double> joint_positions;
-  std::vector<double> joint_velocities;
+    torch::Tensor torques;
 
-  torch::Tensor torques;
+    ros::Timer timer;
 
-  ros::Timer timer;
-
-  std::chrono::high_resolution_clock::time_point start_time;
+    std::chrono::high_resolution_clock::time_point start_time;
 
+    // other rl module
+    torch::jit::script::Module encoder;
+    torch::jit::script::Module vq;
 };
 
 #endif
\ No newline at end of file
diff --git a/src/unitree_rl/lib/model.cpp b/src/unitree_rl/lib/model.cpp
index b476ba7..1578f08 100644
--- a/src/unitree_rl/lib/model.cpp
+++ b/src/unitree_rl/lib/model.cpp
@@ -1,13 +1,5 @@
 #include "model.hpp"
 
-void Model::init_models(std::string actor_path, std::string encoder_path, std::string vq_path)
-{
-    this->actor = torch::jit::load(actor_path);
-    this->encoder = torch::jit::load(encoder_path);
-    this->vq = torch::jit::load(vq_path);
-    this->init_observations();
-}
-
 torch::Tensor Model::quat_rotate_inverse(torch::Tensor q, torch::Tensor v)
 {
     c10::IntArrayRef shape = q.sizes();
diff --git a/src/unitree_rl/lib/model.hpp b/src/unitree_rl/lib/model.hpp
index 1c20cb0..63606f5 100644
--- a/src/unitree_rl/lib/model.hpp
+++ b/src/unitree_rl/lib/model.hpp
@@ -47,13 +47,10 @@ public:
     torch::Tensor compute_torques(torch::Tensor actions);
     torch::Tensor quat_rotate_inverse(torch::Tensor q, torch::Tensor v);
     void init_observations();
-    void init_models(std::string actor_path, std::string encoder_path, std::string vq_path);
 
 protected:
     // rl module
     torch::jit::script::Module actor;
-    torch::jit::script::Module encoder;
-    torch::jit::script::Module vq;
     // observation buffer
     torch::Tensor lin_vel;           
     torch::Tensor ang_vel;      
@@ -63,7 +60,6 @@ protected:
     torch::Tensor dof_pos;           
     torch::Tensor dof_vel;           
     torch::Tensor actions;
-
 };
 
 #endif // MODEL_HPP
\ No newline at end of file
diff --git a/src/unitree_rl/src/unitree_rl.cpp b/src/unitree_rl/src/unitree_rl.cpp
index 38f2652..6e67d09 100644
--- a/src/unitree_rl/src/unitree_rl.cpp
+++ b/src/unitree_rl/src/unitree_rl.cpp
@@ -29,7 +29,11 @@ Unitree_RL::Unitree_RL()
     std::string actor_path = ros::package::getPath(package_name) + "/models/actor.pt";
     std::string encoder_path = ros::package::getPath(package_name) + "/models/encoder.pt";
     std::string vq_path = ros::package::getPath(package_name) + "/models/vq_layer.pt";
-    this->init_models(actor_path, encoder_path, vq_path);
+
+    this->actor = torch::jit::load(actor_path);
+    this->encoder = torch::jit::load(encoder_path);
+    this->vq = torch::jit::load(vq_path);
+    this->init_observations();
     
     this->params.num_observations = 45;
     this->params.clip_obs = 100.0;