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1. 发明授权

US6098465A Material testing machine including a control system for feedback-controlling the operation of a servo system 失效
标题翻译：材料试验机包括用于反馈控制伺服系统的操作的控制系统
公开(公告)号：US6098465A
公开(公告)日：2000-08-08
申请号：US133369
申请日：1998-08-13
申请人： Masayuki Matsumoto , Nobunari Takahashi , Susumu Kamio , Tatsuyoshi Kotou
发明人： Masayuki Matsumoto , Nobunari Takahashi , Susumu Kamio , Tatsuyoshi Kotou
IPC分类号： G01N3/00 , G01N3/02 , G01N3/10 , G05B19/33 , G05D15/01 , G01N3/32
CPC分类号： G05B19/33 , G01N3/10 , G05D15/01 , G01N2203/0016 , G01N2203/0208 , G05B2219/37206 , G05B2219/41028 , G05B2219/50073
摘要： A material testing machine includes a control system which, during material testing, feedback-controls the operation of a servo system which includes an actuator for applying a load to a test piece, such that the actual load applied to the test piece coincides with the target load. The testing machine includes a waveform generator for generating a testing waveform indicative of the target load. The waveform generator includes a waveform data memory which stores therein a series of basic signal values sampled from a basic waveform so as to pick up a characteristic of the basic waveform. During the material testing, each of the basic signal values is repeatedly read out from the data memory, whereby the testing waveform indicating the target load is generated based on these basic signal values. An error between the controlled variable and the target load is determined based on peak and bottom values of the controlled variable, and the target load is corrected in accordance with the determined error, to thereby improve the responsiveness of the servo system.
摘要翻译：材料测试机器包括一个控制系统，在材料测试期间，反馈控制伺服系统的操作，该伺服系统包括用于向测试件施加负载的致动器，使得施加到测试件上的实际负载与目标加载。测试机包括用于产生指示目标负载的测试波形的波形发生器。波形发生器包括波形数据存储器，其中存储从基本波形采样的一系列基本信号值，以便拾取基本波形的特性。在材料测试期间，从数据存储器重复地读出每个基本信号值，由此基于这些基本信号值产生指示目标负载的测试波形。根据受控变量的峰值和最小值确定受控变量与目标负载之间的误差，根据确定的误差校正目标负载，从而提高伺服系统的响应性。

2. 发明授权

US06205863B1 Material testing machine having a control system for feedback-controlling the operation of a servo system 失效
标题翻译：材料试验机具有用于反馈控制伺服系统的操作的控制系统
公开(公告)号：US06205863B1
公开(公告)日：2001-03-27
申请号：US09133838
申请日：1998-08-13
申请人： Yuzo Ishii , Masayuki Matsumoto , Nobunari Takahashi , Susumu Kamio , Katsumi Yamashita
发明人： Yuzo Ishii , Masayuki Matsumoto , Nobunari Takahashi , Susumu Kamio , Katsumi Yamashita
IPC分类号： G01N300
CPC分类号： G01N3/10 , G05B19/33 , G05B2219/37206 , G05B2219/41029 , G05B2219/41388 , G05B2219/50073 , G05D15/01
摘要： A material testing machine includes a control system for feedback-controlling the operation of a servo system, including an actuator for applying a load to a test piece, during material testing. Prior to the material testing, the stiffness of the test piece is estimated on the basis of the actual load and displacement which are detected after the displacement of the test piece is stabilized while maintaining the load observed when a minute displacement is generated in the test piece as the control gain is increased from its minimum value. In accordance with the estimated stiffness, the initial value of the control gain for the control system is set. During the material testing, the control gain is corrected in accordance with the stiffness of the test piece estimated based on the actual load and displacement of the test piece. Upon changeover between the force control mode and the displacement control mode, the initial setting of the control output value for post-changeover is made based on the control output value given to the servo system just before the changeover, to thereby achieve a smooth control mode changeover.
摘要翻译：材料测试机包括用于在材料测试期间反馈控制伺服系统的操作的控制系统，包括用于向测试件施加负载的致动器。在材料测试之前，试件的刚度基于在试件的位移稳定之后检测到的实际载荷和位移，同时保持在测试件中产生微小位移时观察到的载荷因为控制增益从其最小值增加。根据估计的刚度，设定控制系统的控制增益的初始值。在材料测试期间，控制增益根据测试件的刚度进行校正，该刚度根据试件的实际载荷和位移估算。在力控制模式和位移控制模式之间切换时，基于在切换之前给予伺服系统的控制输出值进行用于后转换的控制输出值的初始设定，从而实现平滑控制模式转换

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