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3612| 4
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压力伺服阀请教 |
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请问压力伺服阀是根据增益曲线调节负载压力的吗?谁有压力伺服阀的增益曲线?压力伺服阀怎么用的,能举个例子吗?谢谢!
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很多书上面有力伺服的例子,建议先看一下。
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guojiali945 发表于 2019-8-23 07:57 哪本书啊?能介绍一下吗 | |
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本帖最后由 PEN 于 2019-8-24 11:56 编辑
伺服阀可用于控制压力,但通常伺服阀控制位置或力。 只有少数应用需要控制压力。 我使用相同的伺服阀来控制位置或力。 没有特殊的压力伺服阀。 但是,博世确实有一个特殊的Q2阀芯,用于控制注塑机的位置和压力,但这种特殊阀门不适合机床压力机的正常位置或力控制。 这是控制压力的公式。 你应该知道微积分。 P(t)= P(0)+∫(β*(Q(t)-v(t)* A) / V dt P(t)是当前压力 P(0)是初始压力 是积分符号 B是油的体积模量 Q(t)是时间t的流量 v(t)是时间t的速度 A是活塞的区域 V是泵和阀门之间的油量 Servo valves can be used to control pressure but usually servo valves control position or force. There are only a few applications where pressure needs to be controlled. I use the same servo valve to control position or force. There is no special pressure servo valve. However, Bosch does have a special Q2 spool that is used to control position and pressure for injection molding machines, but this special valve is not suitable for normal control of position or force in a machine press. This is the formula for control pressure. You should know calculus. P(t)=P(0)+∫ (β*(Q(t)-v(t)*A)/V dt P(t) is the current pressure P(0) is the initial pressure Is the integrator symbol Β is the bulk modulus of oil Q(t) is the flow at time t v(t) is the velocity at time t A is the area of the piston V is the volume of oil between the pump and the valve | |
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a = F/m
a = (Pa*Aa-Pb*Ab)/m |
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PEN 发表于 2019-8-24 11:49 没看懂,有没有书推荐一下 | |

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