diff --git a/source/Component/CommandBar/CommandBar.tsx b/source/Component/CommandBar/CommandBar.tsx
index 4ae4121..2bb2f22 100644
--- a/source/Component/CommandBar/CommandBar.tsx
+++ b/source/Component/CommandBar/CommandBar.tsx
@@ -15,7 +15,7 @@ interface ICommandBarProps {
 }
 
 @useSetting
-@useStatusWithEvent("mouseModChange")
+@useStatusWithEvent("mouseModChange", "actuatorStartChange")
 class CommandBar extends Component<ICommandBarProps & IMixinSettingProps & IMixinStatusProps> {
 
     render(): ReactNode {
@@ -34,7 +34,13 @@ class CommandBar extends Component<ICommandBarProps & IMixinSettingProps & IMixi
         >
             <div>
                 {this.getRenderButton({ iconName: "Save", i18NKey: "Command.Bar.Save.Info" })}
-                {this.getRenderButton({ iconName: "Play", i18NKey: "Command.Bar.Play.Info" })}
+                {this.getRenderButton({
+                    iconName: this.props.status?.actuator.start() ? "Pause" : "Play",
+                    i18NKey: "Command.Bar.Play.Info",
+                    click: () => this.props.status ? this.props.status.actuator.start(
+                        !this.props.status.actuator.start()
+                    ) : undefined
+                })}
                 {this.getRenderButton({
                     iconName: "HandsFree", i18NKey: "Command.Bar.Drag.Info", 
                     active: mouseMod === MouseMod.Drag,
diff --git a/source/Component/HeaderBar/HeaderBar.tsx b/source/Component/HeaderBar/HeaderBar.tsx
index 5b51313..0eb6d2e 100644
--- a/source/Component/HeaderBar/HeaderBar.tsx
+++ b/source/Component/HeaderBar/HeaderBar.tsx
@@ -42,7 +42,7 @@ class HeaderBar extends Component<
         return (t: number) => {
             let newState: HeaderBarState = {} as any;
             newState[type] = 1 / t;
-            if (this.updateTime > 60) {
+            if (this.updateTime > 20) {
                 this.updateTime = 0;
                 this.setState(newState);
             }
diff --git a/source/Context/Status.tsx b/source/Context/Status.tsx
index b7d9069..91a2f6b 100644
--- a/source/Context/Status.tsx
+++ b/source/Context/Status.tsx
@@ -12,6 +12,7 @@ import { I18N } from "@Component/Localization/Localization";
 import { superConnectWithEvent, superConnect } from "./Context";
 import { PopupController } from "./Popups";
 import { Behavior } from "@Model/Behavior";
+import { Actuator } from "@Model/Actuator";
 
 function randomColor(unNormal: boolean = false) {
     const color = [
@@ -44,6 +45,7 @@ interface IStatusEvent {
     individualChange: void;
     behaviorChange: void;
     popupChange: void;
+    actuatorStartChange: void;
 }
 
 class Status extends Emitter<IStatusEvent> {
@@ -71,6 +73,11 @@ class Status extends Emitter<IStatusEvent> {
      */
     public model: Model = new Model();
 
+    /**
+     * 执行器
+     */
+    public actuator: Actuator;
+
     /**
      * 弹窗
      */
@@ -104,8 +111,14 @@ class Status extends Emitter<IStatusEvent> {
     public constructor() {
         super();
 
+        // 初始化执行器
+        this.actuator = new Actuator(this.model);
+
+        // 执行器开启事件
+        this.actuator.on("startChange", () => { this.emit("actuatorStartChange") });
+
         // 循环事件
-        this.model.on("loop", (t) => { this.emit("physicsLoop", t) });
+        this.actuator.on("loop", (t) => { this.emit("physicsLoop", t) });
 
         // 对象变化事件
         this.model.on("objectChange", () => this.emit("objectChange"));
diff --git a/source/Model/Actuator.ts b/source/Model/Actuator.ts
new file mode 100644
index 0000000..83ba8ad
--- /dev/null
+++ b/source/Model/Actuator.ts
@@ -0,0 +1,125 @@
+import { Model } from "./Model";
+import { Emitter } from "./Emitter"; 
+
+interface IActuatorEvent {
+	startChange: boolean;
+	loop: number;
+}
+
+/**
+ * 模型执行器
+ */
+class Actuator extends Emitter<IActuatorEvent> {
+
+	/**
+	 * 速度系数
+	 */
+	public speed: number = 1;
+
+	/**
+	 * 模拟帧率
+	 */
+	public fps: number = 24;
+
+	/**
+	 * 仿真是否进行
+	 */
+	private startFlag: boolean = false;
+
+	/**
+	 * 主时钟状态控制
+	 */
+	public start(start?: boolean): boolean {
+		if (start === undefined) {
+			return this.startFlag;
+		} else {
+			this.startFlag = start;
+			this.lastTime = 0;
+			this.alignTimer = 0;
+			this.emit("startChange", start);
+			return start;
+		}
+	}
+
+	/**
+	 * 绑定模型
+	 */
+	public model: Model;
+
+	/**
+	 * 上一帧的时间
+	 */
+	private lastTime: number = 0;
+
+	/**
+	 * 对其计时器
+	 */
+	private alignTimer: number = 0;
+
+	public tickerType: 1 | 2 = 1;
+
+	private ticker(t: number) {
+		if (this.startFlag && t !== 0) {
+			if (this.lastTime === 0) {
+				this.lastTime = t;
+			} else {
+				let durTime = (t - this.lastTime) / 1000;
+				this.lastTime = t;
+
+				// 丢帧判定
+				if (durTime > 0.1) {
+					console.log("Actuator: Ticker dur time error. dropping...")
+				}
+
+				this.alignTimer += durTime;
+				if (this.alignTimer > (1 / this.fps)) {
+					this.model.update(this.alignTimer * this.speed);
+					this.emit("loop", this.alignTimer);
+					this.alignTimer = 0;
+				}
+			}
+		} else {
+			this.emit("loop", Infinity);
+		}
+	}
+
+	/**
+	 * 帧率对其时钟
+	 * 1、使用 requestAnimationFrame 保证最高的性能
+	 * 2、最大模拟帧率只能小于 60
+	 * 3、可能出现帧率对其问题
+	 */
+	private tickerAlign = (t: number) => {
+		this.ticker(t);
+		requestAnimationFrame(this.tickerAlign);
+	}
+
+	/**
+	 * 精确时钟
+	 */
+	private tickerExp = () => {
+		this.ticker(window.performance.now());
+		setTimeout(this.tickerExp, (1 / this.fps) * 1000);
+	}
+
+	/**
+	 * 执行器
+	 */
+	private runTicker = (t: number) => {
+		if (this.tickerType === 1) {
+			this.ticker(t);
+			requestAnimationFrame(this.runTicker);
+		} else {
+			this.ticker(window.performance.now());
+			setTimeout(this.runTicker, (1 / this.fps) * 1000);
+		}
+	}
+
+	public constructor(model: Model) {
+		super();
+		this.model = model;
+		this.runTicker(0);
+	}
+}
+
+export { Actuator }
\ No newline at end of file
diff --git a/source/Model/Model.ts b/source/Model/Model.ts
index a28f07b..23ad788 100644
--- a/source/Model/Model.ts
+++ b/source/Model/Model.ts
@@ -8,7 +8,6 @@ import { Label } from "./Label";
 import { Behavior, IAnyBehavior, IAnyBehaviorRecorder } from "./Behavior";
 
 type ModelEvent = {
-    loop: number;
     labelChange: Label[];
     objectChange: CtrlObject[];
     individualChange: Group;
@@ -280,8 +279,6 @@ class Model extends Emitter<ModelEvent> {
         }
 
         this.draw();
-
-        this.emit("loop", t);
     }
 
     public draw() {