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1. 发明公开

EP0756915A3 Apparatus for controlling inverter resistance welding 失效
标题翻译：逆变器电阻焊接控制装置
公开(公告)号：EP0756915A3
公开(公告)日：1997-02-19
申请号：EP96305674.2
申请日：1996-08-01
申请人： MIYACHI TECHNOS CORPORATION
发明人： Moro, Kyoji , Shimada, Hiroshi
IPC分类号： B23K11/25
CPC分类号： B23K11/257
摘要： An inverter resistance welding control or power supply apparatus includes a clock generator (62) which generates a clock signal defining a switching cycle of an inverter (16) in a resistance welding machine, a device (60) for preselecting a predetermined reference value corresponding to a desired current peak, a current sensor (50) for detecting primary or secondary current of the welding machine, and an inverter control (CPU 40) for controlling the inverter on a switching cycle-by-cycle basis. Specifically, it turns on the inverter in response to a leading edge of the clock signal, and turns it off either when the current detected signal has reached the reference value or when the clock signal has reached a trailing edge. The control apparatus further includes a magnitude evaluator for measuring a magnitude of the current from the detected signal, which magnitude is expressed in root mean square, arithmetic mean or averaged peak value. The control apparatus further includes a reporter monitor for reporting, based on the measured results, information useful to determine normal or defective operation. There may be further provided a lack-of-secondary current detector for operatively and reliably detecting lack of the secondary current by monitoring the primary current.
摘要翻译：一种逆变器电阻焊接控制或电源装置包括：时钟发生器（62），其产生用于定义电阻焊机中逆变器（16）的开关周期的时钟信号;装置（60），其用于预选相应于期望的电流峰值，用于检测焊机的初级或次级电流的电流传感器（50）以及用于逐周期地控制逆变器的逆变器控制（CPU 40）。具体而言，响应于时钟信号的上升沿而接通反相器，并且当电流检测信号已经达到参考值时或者当时钟信号已经到达后沿时将其关断。控制装置还包括幅度评估器，用于测量来自检测信号的电流的大小，幅度以均方根，算术平均或平均峰值表示。控制装置还包括报告监视器，用于基于测量的结果报告用于确定正常或有缺陷的操作的信息。可以进一步提供缺少次级电流检测器，用于通过监测初级电流来可操作且可靠地检测缺少次级电流。

2. 发明公开

EP0979704A2 Inverter resistance welding control apparatus 审中-公开
标题翻译： Steuerungsgerätfürdas Wechselrichter-Widerstandsschweissen
公开(公告)号：EP0979704A2
公开(公告)日：2000-02-16
申请号：EP99306025.0
申请日：1999-07-29
申请人： MIYACHI TECHNOS CORPORATION
发明人： Moro, Kyouji , Shimada, Hiroshi
IPC分类号： B23K11/24 , B23K11/25
CPC分类号： B23K11/257
摘要： When a second switching element Q 2 is changed over from ON state to OFF state for each switching cycle while a first switching element Q 1 remains ON in a unit weld period T a for example, a primary current I 1 does not come to a stop at once under the influence of inductance of a welding transformer 16 but it flows as a transient current i through a primary circuit until it is off. The transient current i makes a closed circuit through which it flows from a primary coil of the welding transformer 16 via a third diode D 3 and then a first switching element Q 1 again into the primary coil of the welding transformer 16. More specifically, due to the first switching element Q 1 being kept ON, the transient current i which has passed through the third diode D 3 flows through the first switching element Q 1 , without passing through a capacitor 12, and comes back into the primary coil of the welding transformer. Little or substantially no current flows through the capacitor 12.
摘要翻译：当第一开关元件Q1例如在单位焊接周期Ta中第一开关元件Q1保持导通时，对于每个开关周期，当第二开关元件Q2从接通状态切换到断开状态时，初级电流I1不会立即停止在焊接变压器16的电感的影响，但是其作为瞬态电流i通过初级电路流动直至其断开。瞬态电流i产生闭合电路，通过该闭合电路，焊接变压器16的初级线圈经由第三二极管D3然后第一开关元件Q1再次流入焊接变压器16的初级线圈。更具体地说，由于第一开关元件Q1保持导通，通过第三二极管D3的瞬态电流i流过第一开关元件Q1，而不通过电容器12，并返回焊接变压器的初级线圈。很少或基本上没有电流流过电容器12.

3. 发明公开

EP0756915A2 Apparatus for controlling inverter resistance welding 失效
标题翻译： Steuerungsgerätfürdes Wechselrichter-Widerstandsschweissen
公开(公告)号：EP0756915A2
公开(公告)日：1997-02-05
申请号：EP96305674.2
申请日：1996-08-01
申请人： MIYACHI TECHNOS CORPORATION
发明人： Moro, Kyoji , Shimada, Hiroshi
IPC分类号： B23K11/25
CPC分类号： B23K11/257
摘要： An inverter resistance welding control or power supply apparatus includes a clock generator (62) which generates a clock signal defining a switching cycle of an inverter (16) in a resistance welding machine, a device (60) for preselecting a predetermined reference value corresponding to a desired current peak, a current sensor (50) for detecting primary or secondary current of the welding machine, and an inverter control (CPU 40) for controlling the inverter on a switching cycle-by-cycle basis. Specifically, it turns on the inverter in response to a leading edge of the clock signal, and turns it off either when the current detected signal has reached the reference value or when the clock signal has reached a trailing edge. The control apparatus further includes a magnitude evaluator for measuring a magnitude of the current from the detected signal, which magnitude is expressed in root mean square, arithmetic mean or averaged peak value. The control apparatus further includes a reporter monitor for reporting, based on the measured results, information useful to determine normal or defective operation. There may be further provided a lack-of-secondary current detector for operatively and reliably detecting lack of the secondary current by monitoring the primary current.
摘要翻译：逆变器电阻焊接控制或电源装置包括时钟发生器（62），其产生限定电阻焊机中的逆变器（16）的开关周期的时钟信号，用于预选对应于期望的电流峰值，用于检测焊接机的一次电流或次级电流的电流传感器（50）以及用于以逐个循环为基础的控制逆变器的逆变器控制（CPU40）。具体地说，它响应于时钟信号的前沿导通逆变器，并且当电流检测信号已经达到参考值或者当时钟信号已经到达后沿时，它将其断开。控制装置还包括用于根据检测到的信号测量电流大小的幅度估计器，该幅度以均方根，算术平均值或平均峰值表示。控制装置还包括报告器监视器，用于基于测量结果报告用于确定正常或缺陷操作的信息。还可以提供一种缺乏二次电流检测器，用于通过监测初级电流可操作地且可靠地检测到二次电流的不足。

4. 发明公开

EP0756914A2 Method and apparatus for controlling inverter resistance welding 失效
标题翻译： Verfahren undGerätzur Steuerung des Wechselrichter-Widerstandsschweissen
公开(公告)号：EP0756914A2
公开(公告)日：1997-02-05
申请号：EP96305573.6
申请日：1996-07-30
申请人： MIYACHI TECHNOS CORPORATION
发明人： Shimada, Hiroshi
IPC分类号： B23K11/25
CPC分类号： B23K11/257
摘要： To guarantee quick and free-of-overshoot rise up of welding current for any resistance welding machines and for any welding operations. The combination of a current sensor 30, a primary current measuring circuit 32, an analog-to-digital converter 34. a CPU 38 and an inverter driver circuit 36 defines a pulse-width-modulation constant-current control circuit for an inverter resistance welding machine involved. The constant-current control circuit includes a feedback loop and controls switching (PWM operation) of an inverter circuit 18 so as to generally maintain a primary current I 1 near a selected current value [Is]. According to programs stored in ROM 40. CPU 38 performs required processing. In particular, when a maximum allowable current value of the resistance welding machine involved has been entered and a selected current value of a particular welding operation has been entered. CPU 38 computes an initial pulse width of a control pulse CP from the maximum allowable current value and the selected current value. In a first cycle of the welding operation, CPU 38 supplies a first control pulse CP 1 having the initial pulse width to the inverter circuit 18 to thereby start the welding operations. The initial control pulse width is determined as a function of a machine current capacity and the desired current level of a welding operation, and may be made in proportion to a relative magnitude (ratio) of the desired current to the machine current capacity. In the subsequent cycles of the welding operation. CPU 38 reads the measured current value of each cycle and compares with selected current value to compute the deviatio of the measured current value. Based on the deviation, CPU determines a next pulse width in order that the deviation will be cancelled.
摘要翻译：确保任何电阻焊机和任何焊接操作的焊接电流的快速自由上升。电流传感器30，初级电流测量电路32，模拟 - 数字转换器34的组合.CPU38和反相器驱动器电路36定义用于逆变器电阻焊接的脉冲宽度调制恒流控制电路涉及机器恒流控制电路包括反馈回路并且控制逆变器电路18的开关（PWM操作），以便通常将初级电流I1保持在选定的电流值ΔIsÜ附近。根据存储在ROM40中的程序.CPU38执行所需的处理。特别地，当已经输入所涉及的电阻焊接机的最大允许电流值，并且已经输入特定焊接操作的选定电流值时。 CPU38从最大允许电流值和所选择的电流值计算控制脉冲CP的初始脉冲宽度。在焊接操作的第一周期中，CPU 38将具有初始脉冲宽度的第一控制脉冲CP1提供给逆变器电路18，从而开始焊接操作。初始控制脉冲宽度被确定为机器电流容量和焊接操作的期望电流水平的函数，并且可以与期望电流相对于机器电流容量的相对大小（比）成比例地确定。在焊接操作的后续循环中。 CPU 38读取每个周期的测量电流值，并与选定的当前值进行比较，以计算测量电流值的偏差。基于偏差，CPU确定下一个脉冲宽度，以便偏移将被取消。

5. 发明公开

EP0979704A3 Inverter resistance welding control apparatus 审中-公开
标题翻译：用于逆变器电阻焊接控制装置
公开(公告)号：EP0979704A3
公开(公告)日：2002-01-23
申请号：EP99306025.0
申请日：1999-07-29
申请人： MIYACHI TECHNOS CORPORATION
发明人： Moro, Kyouji , Shimada, Hiroshi
IPC分类号： B23K11/24 , B23K11/25 , H02M7/5387
CPC分类号： B23K11/257
摘要： When a second switching element Q 2 is changed over from ON state to OFF state for each switching cycle while a first switching element Q 1 remains ON in a unit weld period T a for example, a primary current I 1 does not come to a stop at once under the influence of inductance of a welding transformer 16 but it flows as a transient current i through a primary circuit until it is off. The transient current i makes a closed circuit through which it flows from a primary coil of the welding transformer 16 via a third diode D 3 and then a first switching element Q 1 again into the primary coil of the welding transformer 16. More specifically, due to the first switching element Q 1 being kept ON, the transient current i which has passed through the third diode D 3 flows through the first switching element Q 1 , without passing through a capacitor 12, and comes back into the primary coil of the welding transformer. Little or substantially no current flows through the capacitor 12.

6. 发明公开

EP0756914A3 Method and apparatus for controlling inverter resistance welding 失效
标题翻译：用于控制逆变器电阻焊接的方法和设备
公开(公告)号：EP0756914A3
公开(公告)日：1997-02-12
申请号：EP96305573.6
申请日：1996-07-30
申请人： MIYACHI TECHNOS CORPORATION
发明人： Shimada, Hiroshi
IPC分类号： B23K11/25
CPC分类号： B23K11/257
摘要： To guarantee quick and free-of-overshoot rise up of welding current for any resistance welding machines and for any welding operations. The combination of a current sensor 30, a primary current measuring circuit 32, an analog-to-digital converter 34. a CPU 38 and an inverter driver circuit 36 defines a pulse-width-modulation constant-current control circuit for an inverter resistance welding machine involved. The constant-current control circuit includes a feedback loop and controls switching (PWM operation) of an inverter circuit 18 so as to generally maintain a primary current I 1 near a selected current value [Is]. According to programs stored in ROM 40. CPU 38 performs required processing. In particular, when a maximum allowable current value of the resistance welding machine involved has been entered and a selected current value of a particular welding operation has been entered. CPU 38 computes an initial pulse width of a control pulse CP from the maximum allowable current value and the selected current value. In a first cycle of the welding operation, CPU 38 supplies a first control pulse CP 1 having the initial pulse width to the inverter circuit 18 to thereby start the welding operations. The initial control pulse width is determined as a function of a machine current capacity and the desired current level of a welding operation, and may be made in proportion to a relative magnitude (ratio) of the desired current to the machine current capacity. In the subsequent cycles of the welding operation. CPU 38 reads the measured current value of each cycle and compares with selected current value to compute the deviatio of the measured current value. Based on the deviation, CPU determines a next pulse width in order that the deviation will be cancelled.
摘要翻译：确保任何电阻焊机和任何焊接操作中的焊接电流的快速和无超调升高。电流传感器30，初级电流测量电路32，模数转换器34，CPU 38和逆变器驱动电路36的组合定义了用于逆变器电阻焊接的脉宽调制恒流控制电路涉及机器。恒流控制电路包括反馈回路并且控制逆变器电路18的切换（PWM操作），以便大体上维持接近所选电流值[Is]的初级电流I1。根据存储在ROM 40中的程序.CPU 38执行所需的处理。特别是，当输入电阻焊机的最大允许电流值并输入了特定焊接操作的选定电流值时。 CPU38根据最大可允许电流值和所选电流值计算控制脉冲CP的初始脉冲宽度。在焊接操作的第一周期中，CPU38将具有初始脉冲宽度的第一控制脉冲CP1提供给逆变器电路18，从而开始焊接操作。初始控制脉冲宽度根据机器电流容量和焊接操作的期望电流水平来确定，并且可以与期望电流与机器电流容量的相对大小（比率）成比例地进行。在随后的焊接操作循环中。 CPU38读取每个周期的测量电流值并与选定电流值进行比较以计算测量电流值的偏差。根据偏差，CPU确定下一个脉冲宽度，以便消除偏差。

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