The solution is to require the control and define the control. For example, we need to use sap.ui.unified.FileUploader control and sap.ui.unified lib is not loaded on Launchpad by default. Then you can add the following codes to the place where you use the control:
1) jQuery.sap.require("sap.ui.unified.FileUploader");
2) sap.ui.define("sap/ui/unified/FileUploader") ...