810-370141-001 LAN 驱动模块

【功能描述】

810-370141-001 LAN在伺服驱动器速度闭环中，电机转子实时速度测量精度对于改善速度坏的转速控制动静态特性至关重要。为寻求测量精度与系统成本的平衡，一般采用增量式光电编码器作为测速传感器，与其对应的常用测速方法为M/测速法。M测速法里然具有一定的测量精度和较宽的测量范围，但这种方法有其固有的缺陷，主要包括:1)测速周期内检测到至少一个完整的码盘脉冲，限制了低可测转速;2)用于测速的2个控制系统定时器开关难以严格保持同步，在速度变化较大的测量场合中无法测速精度。因此应用该测速法的传统速度环设计方案难以提高伺服驱动器速度跟随与控制性能

810-370141-001 LAN驱动模块是用来模拟被测试模块的上一级模块，相当于被测模块的主程序。它接收数据，将相关数据传送给被测模块，启用被测模块，并打印出相应的结果。传统的单元测试包括了驱动模块（driver） 和桩模块（stub）。驱动模块的目的很单纯，就是为了访问类库的属性和方法，来检测类库的功能是否正确；驱动模块是用来模拟被测试模块的上一级模块，相当于被测模块的主程序。它接收数据，将相关数据传送给被测模块，启用被测模块，并打印出相应的结果。如果被测试模块中的函数是提供给其他函数调用的，在设计测试用例时就应该设计驱动模块（Driver）。

举例来说：驱动模块（Driver）可以通过模拟一系列用户操作行为，比如选择用户界面上的某一个选项或者按下某个按钮等，自动调用被测试模块中的函数。驱动模块（Driver）设置，使对模块的测试不必与用户界面真正交互。

810-370141-001 LAN 驱动模块

810-370141-001 LAN In the servo drive speed closed loop, the real-time speed measurement accuracy of the motor rotor is very important to improve the dynamic and static characteristics of the speed control. In order to find the balance between measurement accuracy and system cost, incremental photoelectric encoder is generally used as the speed measurement sensor, and its corresponding common speed measurement method is M/ speed measurement. M velocity measurement method, of course, has a certain measurement accuracy and a wide measurement range, but this method has its inherent defects, mainly including :1) the detection of at least one complete code pulse in the speed measurement cycle, limiting the low measurable speed; 2) The timer switches of the two control systems used for speed measurement are difficult to maintain strict synchronization, and the speed accuracy cannot be measured in the measurement occasions with large speed changes. Therefore, it is difficult to improve the performance of servo drive speed following and control by using the traditional speed loop design method

810-370141-001 LAN driver module is used to simulate the upper level module of the module under test, equivalent to the main program of the module under test. It receives the data, transmits the relevant data to the module under test, enables the module under test, and prints out the corresponding results. Traditional unit tests include driver modules and stub modules. The purpose of the driver module is very simple, that is, to access the attributes and methods of the class library, to detect the function of the class library is correct; The driver module is used to simulate the upper level module of the module being tested, which is equivalent to the main program of the module being tested. It receives the data, transmits the relevant data to the module under test, enables the module under test, and prints out the corresponding results. If the functions in the module under test are provided to other function calls, the Driver module should be designed when designing the test case.

For example, the Driver module can automatically call the functions in the module under test by simulating a series of user actions, such as selecting an option on the user interface or pressing a button. The Driver module is set up so that tests on the module do not have to actually interact with the user interface.

810-370141-001 LAN 驱动模块

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